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            2009高考冲刺选择题专项训练

在每小题给出的四个选项中,只有一个选项正确。

1、右图为卢瑟福和他的同事们做a 粒子散射实验装置的示意图,荧光屏和显微镜一起分别放在图中的ABCD四个位置时,观察到的现象,下述说法中正确的是

A.放在A位置时,相同时间内观察到屏上的闪光次数最少

B.放在B 位置时,相同时间内观察到屏上的闪光次数只比A位置时稍少些

C.放在CD 位置时,屏上观察不到闪光

D.放在D 位置时,屏上仍能观察一些闪光,但次数极少

2、分子运动是看不见、摸不着的,其运动特征不容易研究,但科学家可以通过布朗运动认识它,这种方法叫做“转换法”。下面给出的四个研究实例,其中采取的方法与上述研究分子运动的方法相同的是

A.牛顿通过对天体现象的研究,总结出万有引力定律

B.爱因斯坦在普朗克量子学说的启发下提出了光子说

C.欧姆在研究电流与电压、电阻关系时,先保持电阻不变研究电流与电压的关系;然后再保持电压不变研究电流与电阻的关系

D.奥斯特通过放在通电直导线下方的小磁针发生偏转得出通电导线的周围存在磁场的结论

3、弹簧秤挂在升降机的顶板上,下端挂一质量为2kg的物体.当升降机在竖直方向运动时,弹簧秤的示数始终是16N.如果从升降机的速度为3m/s时开始计时,则经过1s,升降机的位移可能是(g10m/s2

A.2m    B.3m    C.9m    D.8m

4、在XOY平面中有一通电直导线与OXOY轴相交,导线中电流方向如图所示.该区域有匀强磁场,通电直导线所受磁场力的方向与OZ轴的正方向相同.该磁场的磁感应强度的方向可能是

A.沿X轴负方向

B.沿X轴负方向

C.沿Z轴正方向

D.沿Z轴负方向

5、图示电路中电阻R1、R2、R3的阻值相等,电池的内阻不计。那么,开关K接通后流过R2的电流是K接通前的

A.                      B.

C.                      D.

7、用ab两束单色光分别照射同一双缝干涉装置,在距双缝恒定距离的屏上得到图示的干涉图样,其中甲图是a光照射时形成的,乙图是b光照射时形成的。则关于ab两束单色光,下述正确的是

A.a光光子的能量较大

B.在水中a光传播的速度较大                甲             乙

C.若用a光照射某金属时不能打出光电子,则用b 光照射该金属时一定打不出光电子

D.若a光是氢原子从n=4的能级向n=2的能级跃迁时产生的,则b光可能是氢原子从n=3的能级向n=2的能级跃迁时产生的

8、光滑水平桌面上有一个静止的木块,枪沿水平方向先后发射两颗质量和速度都相同的子弹,两子弹分别从不同位置穿过木块。假设两子弹穿过木块时受到的阻力大小相同,忽略重力和空气阻力的影响,那么在两颗子弹先后穿过木块的过程中

A.两颗子弹损失的动能相同B.木块每次增加的动能相同

C.因摩擦而产生的热量相同D.木块每次移动的距离相同

9、有一个在y方向上做简谐运动的物体,其振动曲线如图甲所示。关于图乙的下列判断正确的是

        图甲                  图乙

       A.图(1)可作为该物体的速度vt图象  

      B.图(2)可作为该物体的回复力Ft图象

       C.图(3)可作为的物体的回复力Ft图象   

       D.图(4)可作为的物体的回复加速度at图象

10、如图所示,一根长导线弯曲成“п”,通以直流电I,正中间用绝缘线悬挂一金属环C,环与导线处于同一竖直平面内。在电流I增大的过程中,下列叙述错误的是

A.金属环中无感应电流产生

B.金属环中有逆时针方向的感应电流

C.悬挂金属环C的竖直线中拉力变大

D.金属环C仍能保持静止状态

 

 

 

12。如图所示,轻质光滑滑轮两侧用细绳连着两个物体A与B,物体B放在水平地面上,A、B均静止.

已知A和B的质量分别为mA、mB,,绳与水平方向的夹角为

  A.物体B受到的摩擦力可能为0

  B.物体B受到的摩擦力为mgA sin

  C.物体B对地面的压力可能为0

  D.物体B对地面的压力为mB-mAgsin

  14.下列关于变压器的说法中正确的是

    A.升压变压器在升高电压的同时,也提高了交变电压的频率

    B.若输入电压相同,则输出电压随输入电压频率的增大而增大

    C.降压变压器的副线圈导线比原线圈导线粗

D.变压器输出的电功率由输入的电功率决定

15.如图所示,甲、乙两电路中电源完全相同,电阻R1>R2,在两电路中分别通过相同的电量Q的过程中,下列关于两电路的比较,正确的是

  A.电源内部产生电热较多的是甲电路中的电源

  B.R1上产生的电热比R2上产生的电热多

  C.电源做功较多的是乙电路中的电源

  D.电源输出功率较大的是乙电路中的电源

16.利用金属晶格(大小约10-10m)作为障碍物观察电于的衍射图样,方法是让电子通过电场加速,然后让电子束照射到金属晶格上,从而得到电子的衍射图样.已知电子质量为m,电量为e,初速度为0,加速电压为U,普朗克常量为h,则下述说法中正确的是    .

  A.该实验说明了电子具有粒子性

  B.实验中电于束的德布罗意波的波长为

  C.加速电压U越大,电子的衍射现象越明显

  D.若用相同动能的质子替代电子,衍射现象将更加明显

17.如图,在平行玻璃砖上方有一点光源So,观察者在A点隔着玻璃砖

  看到的S。像在S1处,若将玻璃砖向右下方平行移动一段距离至虚

  线位置,观察者仍在A点将看到S0的像点S,的位置在

  A.在S1点正上方  B.在S1点正下方  C.在s1点左上方  D.仍在S1

18.汞原于的能级如图所示,现让一束光予能量为8.8eV的

  单色光照射到大量处于基态(量子数n=1)的汞原子上

  能发出6种不同频率的色光.下列说法中正确的是

  A.最大波长光子的能量为1.1ev

  B.最大波长光子的能量为2.8eV

  C.最大频率光子的能量为2.BeV

  D.最大频率光子的能量为4.9eV

19.在一定条件下,让质子获得足够大的速度,当两个质子p以相等的速率对心正碰,将发生下列反 应:P+P→P+P+P+ 其中是P反质于(反质子与质子质量相等,均为m,且带一个单位负 电荷),则以下关于该反应的说法错误的是

  A.反应前后系统总动量皆为0

  B.反应过程系统能量守恒

  C。根据爱因斯坦质能方程可知,反应前每个质子的能量最小为2mpc2

  D.根据爱因斯坦质能方程可知,反应后单个质子的能量可能小于mpc2

20.如图甲所示,O点为振源,0P=s,t=0 时刻0点由平衡位置 开始向下运动,产生向右沿直线传播的简谐横波,图乙为 点的振动图像(从t1时刻开始振动),则以下说法正确的是

  A.该波的频率为l/t1

  B.t2时刻p点速度最大,方向沿y轴正方向

  C这列波的波长为s(t2-t1)/t1

  D.若t2时刻O点处于负向最大位移处,则S可能为波长的 四分之三

 

 

21.用比值法定义物理量是物理学中一种常用的方法。下面四个物理量都是用比值法定义的,其中定义式正确的是

A.加速度 a=             B.磁感应强度 B=

C.电场强度          D.电阻R=

23.日光灯中有一个启动器,其中的玻璃泡中装有氖气。启动时,玻璃泡中的氖气会发出红光,这是由于氖原子的

A.自由电子周期性运动而产生的

B.外层电子受激发而产生的

C.内层电子受激发而产生的

D.原子核受激发而产生的

25.如图所示,是利用放射线自动控制铝板厚度生产的装置,放射源能放射出a、b、g 三种射线。根据设计要求,该生产线压制的是3mm厚的铝板。那么,在三种射线中哪种射线对控制厚度起主要作用

A.a射线     B.b 射线    

 C.g 射线     D.a、b 和g 射线都行

 

26.小球从空中自由下落,与水平地面相碰后弹到空中某一高度,其速度―时间图象如图所示,则由图可知,下列说法错误的是(    )

A.小球下落的最大速度为5m/s

B.小球第一次反弹初速度的大小为3m/s

C.小球能弹起的最大高度0.45m

D.小球能弹起的最大高度1.25m

 

 

 

27.一列向x轴正方向传播的简谐横波在t=0时的波形如图所示,A、B、C分别是x=0、x=1m和x=2m处的三个质点。已知该波周期为4s,则

A.对质点A来说,在第1s内回复力对它做正功

B.对质点A来说,在第1s内回复力对它做负功

C.对质点B和C来说,在第1s内回复力对它们做功相同

D.对质点B和C来说,在第1s内回复力对它们做功相同

28.如图所示,在折射率大于玻璃折射率的透明液体中,水平放置着一个长方体玻璃砖。在竖直平面内有两束光线,相互平行、相距为d,斜射到长方体的上表面上,折射后直接射到下表面,然后射出。已知图中a为红光、b为紫光,则

A.两出射光线仍平行,距离大于d

B.两出射光线仍平行,距离等于d

C.两出射光线仍平行,距离小于d

D.两出射光线将不再平行

 

 

 

29.如图所示,平行于纸面水平向右的匀强磁场,磁感应强度B1=1T。位于纸面内的细直导线,长L=1m,通有I=1A的恒定电流。当导线与B成600夹角时,发现其受到的安培力为零。则该区域同时存在的另一匀强磁场的磁感应强度B2大小不可能值

A.T           B.T

C.1 T             D.T

 

 

30.已知氦离子He+能级En与量子数n的关系和氢原子能级公式类似,处于基态的氦离子He+的电离能为E=54.4eV。为使处于基态的氦离子He+处于激发态,入射光子所需的最小能量为

 A.13.6 eV       B.40.8 eV         C.48.4 eV         D.54.4 eV

 

32.一核反应方程:,用c表示光速,则

    A.X是质子,核反应放出的能量等于质子质量乘c2

    B.X是中子,核反应放出的能量等于中子质量乘c2

    C.X是质子,核反应放出的能量等于氘核与氚核的质量和减去氦核与质子的质量和,再乘c2

D.X是中子,核反应放出的能量等于氘核与氚核的质量和减去氦核与中子的质量和,再乘c2

33.夏天,海面上的下层空气的温度比上层低。我们设想海面上的空气是由折射率不同的许多水平气层组成的,远处的景物发出的光线由于不断被折射,越来越偏离原来的方向,以至发生全反射。人们逆着光线看去就出现了蜃景,如图所示,下列说法中正确的是

  A.海面上上层空气的折射率比下层空气的折射率要小

  B.海面上上层空气的折射率比下层空气的折射率要大

  C.A是蜃景,B是景物

D.B是蜃景,A是景物

 

34.如图所示,这是工业生产中大部分光电控制设备用到的光控继电器的示意图,它由电源、光电管、放大器、电磁继电器等几部分组成,当用绿光照射光电管的阴极K时,可以发生光电效应,则下列说法正确的是

A.示意图中,a端应是电源的负极

B.放大器的作用是将光电管中产生的电流放大后,使铁芯M磁化,将衔铁N吸住

C.若增大绿光的照射强度,光电子最大初动能增大

D.改用红光照射光电管阴极K时,电路中一定有光电流

 

35.在下列四个方程,X1、X2、X3和X4各代表某种粒子,以下判断中正确的是(  )

 

   

A. X1粒子  B. X2是质子

C. X3是中子    D. X4是电子

 

37.一束一价正离子流垂直于电场方向进入匀强电场,若它们飞出电场的偏向角相同(如图),则可断定它们进入电场时:

A.一定具有相同的质量

B.一定具有相同的速度

C.一定具有相同的动能

D.一定具有相同的动量

 

 

 

 

 

38如图(甲)所示,单匝矩形线圈放在匀强磁场中,线圈按图示方向以OO1为转轴匀速转动.若从图示位置(线圈平面垂直于磁场方向)开始计时,并规定电流方向沿a→b→c→d→a为正方向,则线圈内感应电流随时间变化的图像是图(乙)中的哪一个 (     )

 

 

 

 

 

 

 

 

39.银河系的恒星中大约四分之一是双星。某双星由质量不等的星体S1和S2构成,两星在相互之间的万有引力作用下绕两者连线上某一定点O做匀速圆周运动。由天文观察测得其运动周期为T,S1到O点的距离为r1、S1到S2间的距离为r,已知引力常量为G。由此可求出S2的质量为

A.   B.     C.   D.

40.现有k个氢原子被激发到量子数为3的能级上,若这些受激氢原子最后都回到基态,则在此过程中发出的光子总数是多少?假定处在量子数为n的激发态的氢原子跃迁到各较低能级的原子数都是处在该激发态能级上的原子总数的

A.        B.k        C.       D.2k

 

41、下列核反应中属于核聚变的是:                              (     )

A.

B.

C.

D.

 

43、a、b两种色光以相同的入射角从某种介质射向真空,光路如图所示,则以下叙述正确的是                       (     )

A.a光的全反射临界角小于b光的全反射临界角

  B.用同一干涉装置可看到a光的干涉条纹间距比b光窄

  C.在该介质中a光的传播速度大于b光的传播速度

D.如果b光能使某种金属发生光电效应,a光也一定能使该金属发生光电效应

 

44、下列说法中正确的是                                     (     )

  A.电磁波中最容易发生干涉和衍射现象的是γ射线

  B.少数光子的行为表现为粒子性,大量光子的行为表现为波动性

  C.吸收光谱中有许多暗线,是由于高温物体中缺少相应的元素

D.在电磁波谱中,X射线与γ射线有很大一部分重叠区域,因此二者产生的机理应该是一样的

 

 

 

 

 

 

45、关于天然放射现象,以下叙述正确的是                      (      )

A.若使放射性物质的温度升高,其半衰期将减小

B.β衰变所释放的电子是原子核内的中子转变为质子时所产生的

C.在α、β、γ这三种射线中,γ射线的电离能力最强,α射线的穿透能力最强

D.铀核()衰变为铅核()的过程中,要经过8次α衰变和10次β衰变

 

47、如图所示,将平行板电容器两极板分别与电池正、负极相接,两板间一带电液滴恰好处于静止状态.现贴着下板插入一定厚度的金属板,则在插入过程中                              (      )

A.电容器的带电量不变

B.电路将有顺时针方向的短暂电流

C.带电液滴仍将静止

D.带电液滴将向上做加速运动

 

48、在发射地球同步卫星的过程中,卫星首先进入椭圆轨道Ⅰ,然后在Q点通过改变卫星速度,让卫星进入地球同步轨道Ⅱ。则                              (     )

A.该卫星的发射速度必定大于11.2km/s

B.卫星在同步轨道Ⅱ上的运行速度大于7.9km/s

C.在轨道Ⅰ上,卫星在P点的速度小于在Q点的速度

D.卫星在Q点通过加速实现由轨道Ⅰ进入轨道Ⅱ

 

 

49、一列简谐横波在某时刻的波形如图所示,此时刻质点P的速度为v,经过0.2s它的速度大小、方向第一次与v相同,再经过1.0s它的速度大小、方向第二次与v相同,则下列判断中错误的有                                                 (     )

A.波沿+x方向传播,波速为5m/s

  B.质点M与质点Q的位移大小总是相等、方向总是相反

  C.若某时刻M质点到达波谷处,则P质点一定到达波峰处

D.从图示位置开始计时,在2.2s时刻,质点P的位移为-20cm

 

 

 

50、在研究材料A的热膨胀特性时,可采用如图所示的干涉实验法.A的上表面是一光滑平面,在A的上方放一个透明的平行板B,B与A上表面平行,在它们间形成一个厚度均匀的空气膜。现在用波长为λ的单色光垂直照射,同时对A缓慢加热,在B上方观察到B板的亮度发生周期性地变化.当温度为t1时最亮,然后亮度逐渐减弱至最暗;当温度升到t2时,亮度再一次回到最亮.则:            (      )

A.出现最亮时,B上表面反射光与A上表面反射光叠加后加强

B.出现最亮时,B下表面反射光与A上表面反射光叠加后相抵消

C.温度从t1至t2过程中,A的高度增加

 D.温度从t1至t2过程中,A的高度增加

 

52.下列说法中错误的是

A.电阻率是表征材料导电性能的物理量,电阻率越小,导电的性能越好

B.利用半导体的导电特点可以制成有特殊用途的光敏、热敏电阻

C.超导体是指某些金属的温度升高到某一数值时,它的电阻突然降为零而所处的状态

D.有些合金的电阻率几乎不受温度的影响,通常用它们制成标准电阻

 

 

 

54.已知一电容器充电后与电源断开,有一质量为m、电荷量为q的带电粒子静止于该电容器两平行板的中间,现在两板间贴近下板插入一个厚度为极板间距离1/4的金属板,如图所示,则关于两板间的电压及带电粒子的运动情况,下列说法中正确的是

A.两板间电压U增大,带电粒子向上加速B.两板间电压U不变,带电粒子仍保持静止

C.两板间电压U减小,带电粒子仍保持静止D.两板间电压U减小,带电粒子向下加速

57.分别对两个电源测电源的电动势和内电阻,其电流和路端电压的关系图如右图所示,则应有

A.当U1=U2时,电源的总功率P1=P2  B.当U1=U2时,外电阻R1=R2

C.当I1=I2时,电源输出功率P出1<P出2 D.当I1=I2时,电源内部消耗的电功率P内1<P内2

58.如图所示,A、B、C、D为匀强电场中相邻的两个等势面,一个电子垂直经过等势面D时的动能为20eV,经过等势面C时的电势能为-10ev,到达等势面B时的速度恰好为零,已知相邻等势面间的距离为5cm,不计电子的重力,下列说法中正确的是

A.A等势面的电势为10V  B.匀强电场的场强为200V/m

C.电子再次经过D等势面时,动能为10eV  D.电子的运动是匀变速曲线运动

59.如图所示,把一个带电小球A固定在光滑的水平绝缘桌面上,在桌面的另一处放置带电小球B。现给B一个沿垂直AB方向的速度v0,下列说法中正确的是

A.若A、B为异性电荷,B球一定做圆周运动

B.若A、B为异性电荷,B球可能做匀变速曲线运动

C.若A、B为同性电荷,B球一定做远离A的变加速曲线运动

D.若A、B为同性电荷,B球的动能一定会减小

60.一电场的电场强度随时间变化的图象如图所示,此电场中有一个带电粒子,在t=0时刻由静止释放,若带电粒子只受电场力的作用,则下列判断正确的是

A.带电粒子将做往复运动

 B.4s内的总位移为零

C.2s末带电粒子的速度最大

 D.前2s内,电场力所做的总功为零

61.17世纪意大利科学家伽利略在研究运动和力的关系时,提出了著名的斜面实验,其中应用到的物理思想方法属于

A.等效替代  B.实验归纳   C.理想实验   D.控制变量

62.在研究运动物体不受力会怎样时,让小车从斜面上滑下,观察在不同的水平面上滑行的距离与什么因素有关,应改变

A.平面的粗糙程度   B.小车的质量    C.小车开始下滑的高度   D.斜面的坡度

 

63.下列关于力的说法中,正确的是

A.做匀速率曲线运动的物体,受到的作用力的合力一定为零

B.在粗糙平面上滑动的物体一定受到滑动摩擦力

C.力是物体之间的相互作用,因此相互作用的物体之间,弹力或摩擦力总是成对出现的

D.不同性质的共点力可以合成为一个力,一个力也可以分解成几个不同性质的力

 

64.某同学在“研究平抛运动”的实验中得到图中A、B、C、D、E五个实验点,图中关于偏差较大的B点产生偏差的原因,以下说法中不正确的是

A.由于球没有放好,在滚下的过程中与轨道的边缘接触,使球受到的摩擦力变大

B.小球开始滚下的高度较其他各点低C.小球离开斜槽后与白纸有接触

D.实验者在小球开始滚下时给了小球一个初速度

65.在欢庆节日的时候,人们会在夜晚燃放美丽的焰火。按照设计,某种型号的装有焰火的礼花弹从专用炮筒中射出后,在4s末到达离地面100m的最高点时炸开,构成各种美丽的图案,假设礼花弹从炮筒中竖直向上射出时的初速度是v0,上升过程中所受的阻力大小始终是自身重力的k倍,g=10m/s2,那么v0和k分别等于

A.25m/s,1.25  B.40m/s,0.25  C.50m/s,0.25   D.80m/s,1.25

66.一圆柱形飞船的横截面半径为r,使这飞船绕中心轴O自转,从而给飞船内的物体提供了“人工重力”。若飞船绕中心轴O自转的角速度为ω,那么“人工重力”中的“重力加速度g”的值与离开转轴O的距离L的关系是(其中k为比例系数)

A.     B.g=kL   C.     D.

67.一质点在xoy平面内运动的轨迹如图所示,下列判断正确的是

A.若x方向始终匀速,则y方向先加速后减速

B.若x方向始终匀速,则y方向先减速后加速

C.若y方向始终匀速,则x方向先减速后加速

D.若y方向始终匀速,则x方向一直加速

68.一斜劈被两个小桩A和B固定在光滑的水平地面上,然后在斜面上放一物体,如图所示,以下判断正确的是

A.若物体静止在斜面上,则B受到挤压  B.若物体匀速下滑,则B受到挤压

C.若物体加速下滑,则A受到挤压      D.若物体减速下滑,则A受到挤压

69.如果自行车以速率v转弯,转弯处的半径为R,这时自行车与竖直线所成的夹角为α,现将速度增加到2v,同时半径也增加到2R,则此时自行车与竖直线的夹角为β(不计摩擦力对向心力的贡献),那么必有

A.β>2α  B.2α>β>α  C.β=α    D.α>β>

 

70.同学们在由静止开始向上运动的电梯里,把一测量加速度的小探头固定在一个质量为1kg的手提包上,到达某一楼层停止,采集数据并分析处理后列出下表:

建立物理模型

匀加速直线

匀速直线

匀减速直线

时间段(s)

2.5

9

2.5

平均加速度(m/s2)

0.40

0

0.40

为此同学们在计算机上画出了很多图象,请你根据上表数据和所学知识判断下列图象(设F为手提拉力,g=9.8m/s2)中正确的是

A.①②  B.②③  C.③④  D.①③

 

71、在下列叙述中,符合物理学史的是(            )

(A)托马斯?杨的干涉实验,有力地证明了光具有波动性,

(B)卢瑟福根据a粒子的散射,提出了原子的核式结构学说,

(C)麦克斯韦提出了光的电磁说,

(D)贝克勒尔通过对天然放射现象的研究,发现了原子核由质子和中子组成

72、用某种单色光照射某种金属表面,发生光电效应,现保持该单色光的频率不变,并使它的光强减弱,则(            )

(A)光电子的最大初动能不变,(B)光电子的最大初动能减小,

(C)单位时间内产生的光电子数减少,(D)可能不发生光电效应。

73、在“研究平抛物体的运动”实验中,下列各种情况会造成实验误差的有

(A)小球与斜槽之间的摩擦,(B)小球飞离槽口后受到空气阻力,

(C)小球每次释放时高度不同,(D)小球飞行过程中与记录装置间有擦碰。

74、在“用单摆测定重力加速度”实验中,下列说法正确的是(              )

(A)摆长必须大于1 m,摆角必须小于5°,

(B)未知摆球的重心也可以设法测出重力加速度,

(C)在单摆的摆角从4°减小到2°的过程中可以看作周期不变,

(D)由于秒表走时误差,有必要测多次全振动求平均周期。

75、静止在光滑水平面上的物体,受到一个水平拉力,当拉力开始作用瞬间(            (A)物体立即具有速度和加速度,       (B)物体立即具有加速度但速度为零,

(C)物体立即具有速度但加速度为零,(D)物体的速度和加速度该时刻都为零。

76、2003年10月15日,我国利用“神舟五号”飞船将1名宇航员送入太空,中国成为继俄、美之后第三个掌握载人航天技术的国家。设宇航员测出自己绕地球球心做圆周运动的周期为T,离地面高度为H,地球半径为R,则根据THR和万有引力恒量G,不能计算出下面的项目是(           )

(A)地球的质量(B)地球的平均密度(C)飞船所需的向心力,         (D)飞船线速度的大小。

 

 

77、如图,环形导线和直导线AB相互绝缘,且直导线又紧靠环的直径,若直导线被固定不动,则两者通以图示方向的电流后,环形导线的运动情况是(              )

(A)静止不动(B)以直导线为轴转动(C)向上运动(D)向下运动。

78、如图,虚线上方空间有匀强磁场,扇形导线框绕垂直于框面的轴O以角速度w匀角速转动,线框中感应电流方向以逆时针为正,那么,能正确表明线框转动一周感应电流变化情况的是下列图中的哪一个(              )

 

 

 

 

 

79、沿x轴传播的横波,t与(t+0.4 s)在-3 m3 m的区间内的波形均如图所示,那么可以断定

(         )

(A)该波最大波速为10 m/s,            

(B)该波周期的最大可能值为0.4 s,

(C)(t+0.2 s)时,x4 m的质点位移为零,

(D)若波沿+x方向传播,各质点刚开始振动时运动方向向上。

 

81.由原子核的衰变规律可知

  (A)放射性元素一次衰变可同时产生α射线和β射线

  (B)放射性元素发生β衰变,产生的新核的化学性质不变

  (C)放射性元素衰变的快慢跟它所处的物理、化学状态有关

  (D)放射性元素发生正电子衰变时,产生的新核质量数不变,核电荷数减少l

82.由图可得出结论(  )

A.质子和中子的质量之和小于氘核的质量

B.质子和中子的质量之和等于氘核的质量

C.氘核分解为质子和中子时要吸收能量

D.质子和中子结合成氘核时要吸收能量

 

 

83.如图所示,在某一真空空间,有一水平放置的理想平行板电容器充电后与电源断开,若正极板A以固定直线00’为中心沿竖直方向作微小振幅的缓慢振动时,恰有一质量为m带负电荷的粒子(不计重力)以速度v沿垂直于电场方向射入平行板之间,则带电粒子在电场区域内运动的轨迹是(设负极板B固定不动,带电粒子始终不与极板相碰)

(A)直线

(B)正弦曲线

(C)抛物线

(D)向着电场力方向偏转且加速度作周期性变化的曲线

84.如图所示,理想变压器原、副线圈的匝数比为10:1,b是原线圈的中心抽头,电压表V 和电流表A均为理想电表,除滑动变阻器电阻R以外其余电阻均不计,从某时刻开始在原线圈c、d两端加上交变电压,其瞬时值表达式为t(V).下列说法中正确的是

(A)当单刀双掷开关与a连接时,电压表的示数为22V

(B) 时,c、d两点问的电压瞬时值为110V

(C)单刀双掷开关与a连接,滑动变阻器触头向上移动的过程中,电压表和电流表的示数均变小

(D)当单刀双掷开关由a扳向b时,电压表和电流表的示数均变小

85。如图所示,ab、cd为两根水平放置且相互平行的金 属轨道,相距L,左右两端各连接一个阻值均为R 的定值电阻,轨道中央有一根质量为m的导体棒 MN垂直放在两轨道上,与两轨道接触良好,棒及轨 道的电阻不计。整个装置处于竖直向下的匀强磁场中,磁感应强度大小为B.棒MN在外驱动力作用下做简谐运动,其振动周期为T,振幅为A,通过中心位置时的速度为v0 .则驱动力对棒做功的平均功率为

                                                             

A.   B.   C   D 

86.如图所示,在绝缘水平面上固定两个等量同种电荷P、Q,在PQ连线上的M点由静止释放一带电滑块,则滑块会由静止开始一直向右运动到PQ连线上的另一点N而停下,则以下说法正确的是

  A.滑块受到的电场力一定是先减小后增大

  B.滑块的电势能一直减小

  C.滑块的动能与电势能之和可能保持不变

  D.PM间距一定小于QN间距

 

87.某同学在做测定玻璃砖折射率的实验时,第一次将法线画得与界面不垂直,出现如图(a)所示的倾斜;第二次在放置玻璃砖时,将玻璃砖的平面没有与aa`重合,出现如图(b)所示的偏差,设玻璃砖折射率的真实值为n,第一次的测量值为n,第二次的测量值为n,则

(A)n〈n1  n〈n2        (B) n〉n1  n〉n2

(C) n〉n1  n〈n2       (D) n〈n1  n〉n2

88.已知汞原子可能的能级为E1=-10.4 eV,E2=-5.5 eV, E3=-2.7 eV,E4=-1.6 eV。一个自由电子的总能量为9 eV,与处于基态的汞原子发生碰撞,已知碰撞过程中不计汞原子动量的变化,则电子可能剩余的能量为

  (A)0.2 eV    (B)1.4 eV    (C)2.3 eV    (D)5.5 eV

 

90.如图所示的装置是一位物理学家没计的一种使用钍的“永动机”.它是在密闭的玻璃球壳1中,放入玻璃管2,将具有放射性的钍盐3密封在玻璃管中,4是两片彼此紧靠的金属箔,5是贴在玻璃球壳内侧的金属板,金属板接地.这个装置之所以称为“永动机”,是当两片金属箔吸收到放射线而带同种电荷时则不停地排斥,每次排斥时向左右张开,触到金属板的内壁,立即收回,如此往复,形成金属箔的“永动”.下列说法中正确的是

(A)金属箔是由于吸收到α射线而张开的

(B)金属箔是由于吸收到β射线而张开的

(C)此装置可看作是第一类永动机

(D)此装置可看作是第二类永动机

91.元素X的原子核可用符号表示,其中a、b为正整数,下列说法中正确的是

     A.a等于原子核中的质子数,b等于原子核中的中子数

B.a等于原子核中的中子数,b等于原子核中的质子数

C.a等于原子核中的核子数,b等于原子核中的质子数

D.a等于原子核中的质子数,b等于原子核中的核子数

92.频率为ν的光照到某金属材料时,产生光电子的最大初动能为Ekm,若改用频率为2ν的光照射同一金属材料,则所产生光电子的最大初动能为(h为普朗克常量)

     A.2Ekm          B.Ekm+hν            C.Ekm-hν          D.Ekm+2hν

93.抽取高强度纤维细丝时可用激光监控其粗细,如图所示,观察激光束经过细丝时在光屏上所产生的条纹即可判断细丝粗细的变化

     A.这主要是光的干涉现象

     B.这主要是光的散射现象

     C.如果屏上条纹变宽,表明抽制的丝变粗

     D.如果屏上条纹变宽,表明抽制的丝变细

94.如图所示,MN是暗室墙上的一把直尺,一束宽度为a的平行白光垂直射向MN.现将一横截面积是直角三角形(顶角A为30°)的玻璃三棱镜放在图中位置,且使其截面的直角边AB与MN平行,则放上三棱镜后,射到直尺上的光将

     A.被照亮部分上移

     B.被照亮部分的宽度不变

     C.上边缘呈紫色,下边缘呈红色

     D.上边缘呈红色,下边缘呈紫色

95.2006年美国NBA全明星赛非常精彩,最后东部队以2分的微弱优势取胜,本次比赛的最佳队员为东部队的詹姆斯,假设他在某次投篮过程中对篮球做功为W,出手高度为h1,篮筐距地面高度为h2,球的质量为,不计空气阻力,则篮球进筐时的动能为:

       A.W+;                         B.-W;

       C.-W;                          D.W+

 

 

96.如图所示是示波管工作的原理示意图,电子经电压U加速后以速度v0垂直进入偏转电场,离开电场时的偏转量为h.两平行板间的距离为d,电势差为U,板长为L.为了提高示波管的灵敏度(即每单位电压引起的偏转量),可采取的方法是

     A.增大两板间电势差U2                   B.减小板长L

     C.减小两板间距离d                         D.增大加速电压U1

 

 

 

 

 

 

97、科技馆中有一个展品,如图所示,在较暗处有一个不断均匀滴水的龙头。在一种特殊的灯光照射下,可观察到一个个下落的水滴。缓缓调节水滴下落的时间间隔到适当情况,可看到一种奇特的现象,水滴似乎不再往下落,而是固定在图中ABCD四个位置不动,要出现这种现象,照明光源应该满足(g取10m/s2) :

   A.普通光源即可;

   B.间歇发光,间隙时间为1.4s;

   C.间歇发光,间隙时间为0.14s;

   D.间歇发光,间隙时间为0.2s。

98.设人自然步行时的跨步频率与手臂自然摆动的频率一致(人手臂自然摆动的频率与臂长的关系,类似于单摆固有频率与摆长的关系),且人的步幅与身高成正比,由此估测人的步行速度v与身高L的关系为

     A.v∝L2                       B.v∝L                      C.                D.

99.已知电子质量为9.1×1031kg,普

试题详情

2009年重庆市中考数学模拟试题

(2小时完卷,满分150分)

试题详情

 

导体切割磁感线专题

1.如图所示,MM′和NN′为一对足够长的平行光滑倾斜导轨,导轨平面的倾角θ=30°,导轨相距为L,上端M N和定值电阻R用导线相连,并处于垂直导轨平面向上的匀强磁场中,磁场的磁感应强度大小为B。质量为m的金属棒ab垂直导轨放置在MN附近。从静止开始下滑,通过的路程为d时,速度恰好达到最大。设金属棒的电阻为r,导轨和导线的电阻不计,求:

(1)金属棒的最大加速度;

(2)金属棒的最大速度vm

(3)金属棒下滑d过程中金属棒上产生的电热Q

(4)电阻R上通过的电量q。

 

 

 

 

 

 

 

 

 

 

2.如图6所示,质量为m1的金属棒P在离地h高处从静止开始沿弧形金属平行导轨MM′、NN′下滑,水平轨道所在的空间有竖直向上的匀强磁场,磁感强度为B。水平导轨上原来放有质量为m2 的金属杆Q,已知两杆质量之比为3∶4,导轨足够长,不计摩擦,m1为已知。求:

(1)两金属杆的最大速度分别为多少?

(2)在两杆运动过程中释放出的最大电能是多少?


 

 

 

 

 

3. 如图所示:长为L,电阻r=0.3Ω,质量m=0.1kg的金属棒CD垂直跨搁在位于水平面上的两条平行光滑导轨上,两导轨间距也是L棒与导轨间接触良好,导轨电阻不计,导轨左端接有R=0.5Ω的电阻, 量程为0~3.0A的电流表串接在一条导轨上,量程为0~1.0V的电压表接在电阻R两端,垂直导轨平面的云强磁场向下穿过导轨平面。现以水平向右的恒力F使金属棒向右移动,当金属棒以υ=2m/s的速度在导轨上匀速运动时,观察到电路中一电表正好满偏,而另一电表未满偏。

问: (1)此满偏的表示是么表?说明理由

(2)拉动金属的外力F是多大?

(3)此时撤去此外力F,金属棒将逐渐慢

下来,最终停止在导轨上,求从撤去外力到金属

棒停止运动的过程中通过电阻R的电量

 

 

 

 

 

 

 

 

 

4、如图所示,在匀强磁场中竖直放置两条足够长的平行导轨,磁场方向与导轨所在平面垂直,磁感强度大小为B0。导轨上端连接一阻值为R的电阻和电键K,导轨电阻不计。两金属棒a和b的电阻都为R,质量分别为ma=0.02kg和mb=0.01kg,它们与导轨接触良好,并可沿导轨无摩擦地运动,g取10m/s2

(1)若将b棒固定,电键K断开,用一竖直向上的恒力F拉a棒,稳定后a棒以v1=10m/s的速度向上匀速运动。此时再释放b棒,b棒恰能保持静止。求拉力F的大小。

(2)若将a棒固定,电键K闭合,让b棒自由下滑,求b棒滑行的最大速度v2

(3)若将a棒和b棒都固定,电键K断开,使磁感强度从B0随时间均匀增加,经0.1s后磁感强度增大到2B0时,a棒所受到的安培力大小正好等于a棒的重力,求两棒间的距离h。

 

 

 

 

 

 

 

 

 

 

 

5.如图所示,有上下两层水平放置的平行光滑导轨,间距是L,上

层导轨上搁置一根质量为m,电阻是R的金属杆ST,下层导轨末端紧接着两根竖直平面内的半径为r的光滑绝缘半圆形轨道,在靠近半圆形轨道处搁置一根质量也是m,电阻也是R的金属杆AB。上下两层平行导轨所在区域里有一个竖直向下的匀强磁场。当闭合开关S后,当有电荷量q通过金属杆AB时,杆AB滑过下层导轨,进入半圆形轨道并且刚好能通过轨道最高点D′F′后滑上上层导轨。设上下两层导轨都是够长,电阻不计。

⑴求磁场的磁感应强度

⑵求金属杆AB刚滑到上层导轨瞬间,上层导轨和金属杆组成的回路中的电流

⑶问从AB滑到上层导轨到具有最终速度这段时间里上层导轨回路中有多少能量转变为内能?

 

 

 

 

 

 

 

 

 

 

 

6、如图所示,水平地面上方的H高区域内有匀强磁场,水平界面PP'是磁场的上边界,磁感应强度为B,方向是水平的,垂直于纸面向里。在磁场的正上方,有一个位于竖直平面内的闭合的矩形平面导线框abcdab长为l1bc长为l2H>l2,线框的质量为m,电阻为R。使线框abcd从高处自由落下,ab边下落的过程中始终保持水平,已知线框进入磁场的过程中的运动情况是:cd边进入磁场以后,线框先做加速运动,然后做匀速运动,直到ab边到达边界PP'为止。从线框开始下落到cd边刚好到达水平地面的过程中,线框中产生的焦耳热为Q。求:

(1)       线框abcd在进入磁场的过程中,通过导线的某一横截面的电量多少?

(2)线框是从cd边距边界PP'多高处开始下落的?

(3)线框的cd边到达地面时线框的速度大小是多少?

 

 

 

 

 

 

 

 

 

 

7.图中a1b1c1d1a2b2c2d2为在同一竖直平面内的金属导轨,处在磁感应强度为B的匀强磁场中,磁场方向垂直导轨所在的平面(纸面)向里。导轨的a1b1段与a2b2段是竖直的,距离为l1c1d1段与c2d2段也是竖直的,距离为l2x1y1x2y2为两根用不可伸长的绝缘轻线相连的金属细杆,质量分别为m1m2,它们都垂直于导轨并与导轨保持光滑接触。两杆与导轨构成的回路的总电阻为RF为作用于金属杆x1y1上的竖直向上的恒力。已知两杆运动到图示位置时,已匀速向上运动,求此时作用于两杆的重力的功率大小和回路电阻上的热功率。 

 

 

 

 

 

 

8.如图所示, 金属棒a从高为h处自静止起沿光滑的弧形导轨下滑, 进入光滑导轨的水平部分, 导轨的水平部分处于竖直向下的匀强磁场中. 在水平部分原先静止有另一根金属棒b, 两根棒的质量关系是ma=2mb, 整个水平导轨足够长并处于广阔的匀强磁场中.

(1) 当金属棒刚进入磁场的瞬间, 两棒的加速度大小之比是多少?

(2) 假设金属棒a始终没跟金属棒b相碰, 则两棒的最终速度各多大?

(3) 在上述整个过程中两根金属棒和导轨所组成的回路中消耗的电能是多少?

 

 

 

 

 

 

 

 

9.矩形线框的质量m0.016kg,长l0.5m,宽d0.1m,电阻R=0.1Ω.从离磁场区域高h15m处自由下落,刚入匀强磁场时由于磁场力作用,线框正好作匀速运动.求:

(1)磁场的磁感应强度;

(2)如果线框下边通过磁场所经历的时间为△t=0.15s,求磁场区域的高度h2

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.(1)当金属棒的速度为零时,加速度最大。

(2):

 

(3):

          (4): q=

 

2  (1):即为Q棒最大速度。

(2):

3、(1)电压表  (2) 1.6N  (3)0.25C

4:  (1)

(2):

(3):

5:(1)

 (3)

6 :(1):  (2)                          (3)

7    (1)    P=Rm1+m2g                        

(2)   Q=[2R                                     

8:  (1)       

(2):

8.(1) 1∶ 2 (2) 都是 (3)

9.(1)B=0.4T;(2)h2= 1.55m

提示:(1)刚进入磁场时,线框的速度v=10 m/s,产生的感应电动势E=Bdv,受到的安培力F=BId=B2d2v/R,有线框匀速运动,得mg=F,解得B=0.4 T。

(2)线框匀速下落l用时t1=l/v=0.05 s,剩下的时间t2=Δt-t1=0.1 s内做初速度为v,加速度为g的匀加速运动,运动的位移s=vt2gt221.05 m,则磁场区域的高度h2=s+l=1.55 m

 

 

试题详情

陕西师大附中2008~2009学年度第二学期期中考试

高一年级语文

审题人  周  鑫

试题详情

陕西师大附中2008-2009学年度第二学期期中考试

高一年级英语试题

命题人:秦晓敏   审题人:张伟

第I卷(共70分)

I.听力(每题1分,共10分)

第一节(共5小题;每小题1分,满分5分)

1. What can we learn from the conversation?

A. The woman is a close friend of the man.

B. The woman is tired of her work.

C. The woman is seeing a doctor.

2. What is the woman’s opinion?

A. She doesn’t enjoy the drive very much.

B. It’s years since she drove anywhere for pleasure.

C. She doesn’t agree with the drive.

3. What does the woman mean?

A. She has forgotten to phone the man.

B. She doesn’t like to call the man.

C. She is too busy to ring the man.

4. What has the man bought?

A. Shirt

B. Sweater

C. Skirt

5. What is the man doing?

A. Buying a ship ticket for next week.

B. Buying a Hamburger for his breakfast.

C. Buying a newspaper.

第二节(共5小题;每小题1分,满分5分)

听第6段材料,回答第6至7题。

6. When must the boys get on the coach?

A. 1:30

B. 12:50

C. 2:30

7. Where will the boys meet?

A. At the school park.

B. At the gym.

C. At the school car park

听第7段材料,回答第8至10题。

8. What does the man want to buy?

A. A cap.

B. A cup

C. A cat.

9. What is the price?

A. 125 yuan.

B. 255 yuan.

C. 225 yuan.

10. What size should the man take?

A. Size 58.

B. We don’t know.

C. Size 59

II.单项选择(每题1分,共15分)

11. She ______ have left school, for her bike is still here.

A. wouldn’t

B. needn’t

C. can’t

D. shouldn’t

12. -What do you think of the grammar book?  

-Oh, it really is _____ useful reference book, which is worth reading ____ second time.

A. a, a

B. an, the

C. an, a

D.the, the

13. It’s getting dark. We’d better _______ in a hotel for the night.

A. set up

B. set out

C. settle down

D. settle up

14.The last time we had great fun was _____ we were visiting the Water Park.

A. where

B. how

C. when

  D. why

15. Why not get some work experience first______ go straight on to university?

A. other than

B. rather than

C. more than 

D. less than

16. According to the air traffic rules, you ___ switch off your mobile phone before boarding(登机).

A. may   

B. can

C. would

D. should

17. -Your mother becomes more and more forgetful.

   -Yes. She searched for her cell phone for a whole day last Sunday but it ______ in her coat pocket the next day.

A. turned out

B. turned on

C. turned over

D. turned up

18. He could see the tall chimneys of the factory _________.

A. from distance

B. in distance

C. in the distance

C. to distance

19. He apologized ________ late.

A. to his teacher to arrive

B. to his teacher for arriving

C. at his teacher to arrive 

C. at his teacher for arriving

20. When asked _____ they needed most, the kids said they wanted to feel important and loved.

A. what

B. why

C. whom

D. which

21. ― Anything new in the new regulations?  

― They will be ______ to us all.

A. of great benefit

B. do harms

C. do many good

D. for the benefit

22. She made a promise _______ she would help when I was in trouble.

A. when

B. which

C. that

D. what

23. Although this ____ sound like a simple task, great care is needed.

A. must

B. may

C. shall

D. should

24. _____ is known to us all is that the 2012 Olympic Games will take place in London.

A. It

B. What

C. As

D. Which

25. He wanted the girl he was looking forward ____ __  stay with him.

A. for; to

B. to; with

C. to; to

D. with; to

III.完形填空(每题1分,共15分)

Scientists have always wanted to know more about the other worlds in space. They have looked at them   26   the telescope and   in this way they have found out   27  . They know, for example, many facts about the moon.

The moon is about 384,000 kilometers   28  the earth. A plane can not fly to the moon because there isn’t enough air. But a rocket can fly even when there is no air.

 “How does a rocket fly?” If you want to know, get a balloon and  then blow it up   29  it is quite big. Do not   30  the neck of the balloon. Let it go  31  and see   32  happens. The balloon will fly off through the air very quickly. The air inside the balloon   33  out. It rushes out through the neck balloon and this pushes the balloon through the air. It does not need wings  34  .

This is   35   a rocket   36  . It is not made of rubber like a balloon, of course. It is made of metal. The metal   37  not be heavy   38   it must be very strong. A gas is put inside the rocket. When the gas is hot enough, it rushes out of the open end of the rocket, and pushes it into the air.

Rockets can fly far out into space. Rockets with men inside them have already   39  the moon . Someday rockets may be able to go   40  in space .

26.A. through

B. towards

C. across

D. into

27.A. a lot of

B. lots of

C. a great deal of

D. a great deal

28.A. away far

B. away from

C. far from

D. far to

29.A. when

B. while

C. until

D. as

30.A. tie up

B. take up

C. put up

D. hold up

31.A. carefully

B. slowly

C. suddenly

D. quickly

32.A. that

B. what

C. which

D. whether

33.A. try to get

B. trying to get

C. tried to get

D. tries to get

34.A. to fly

B. flying

C. its own

D. of it

35.A. what

B. how

C. which

D. where

36.A. runs

B. goes

C. works

D. flies

37.A. shall

B. may

C. can

D. must

38.A. but

B. and

C. so

D. therefore

39.A. got

B. arrived

C. reached to

D. reached

40.A. anywhere

B. everywhere

C. somewhere

D. nowhere

IV.阅读理解(每题2分,共30分)

A

Our eating habits are very important for good health and a strong body. There are times when most of us would rather eat sweets and ice-cream than meat and rice. Sweets and ice-cream are not bad if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite(食欲). It is important for us to eat our meals at the same time each day. When we feel hungry, it is a sign that our body needs food. When we feel angry or excited, we may not want to eat. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not eat the bread, it showed that he was telling lies. Although this seems very strange and rather foolish, it is indeed a very good way of finding out the fact. A man who is worrying about something has difficulty in eating anything dry. Because he is worrying, he loses his appetite and does not want to eat.

41. It is good to eat sweets and ice-cream ____.

A. when we are hungry .

B. when we want to

C. after the meal 

D. before the meal

42. We'd better have our meals ____.

A. at the same time each day

B. when our work is over

C. when the meal is still hot

D. when every one of the family is home

43. According to the judges in England, if a man tells a lie, he____.

A. eats dry bread easily

B. eats dry bread with difficulty

C. eats a lot of dry bread

D. drinks milk with difficulty

B

People in the United States honor their parents with two special days:Mother’s Day, on the second Sunday in May,and Father’s Day, on the third Sunday in June. These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days make us think about the changing roles of mothers and fathers. More mothers now work outside the home. More fathers must help with child care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one symbolizes a living mother. A white one shows that the mother is dead. Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit the cemetery(墓地). On these days families get together at home, as well as in restaurants. They often have outdoor barbecues for Father’s Day. These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are valued more than the ones bought in stores. It is not the value of the gift that is important, but it is “the thought that counts”. Greeting card stores, florists, candy makers, bakeries, telephone companies, and other stores do a lot of business during these holidays.

44. Which of the following is NOT a reason for children to show love and respect for parents?

A. Parents bring up children.

B. Parents give love and care to children.

C. Parents educate children to be good persons.

D. Parents pass away before children grow up.

45.What do you think “florists” do?

A.They sell flowers.

B.They make and sell bread.

C.They offer enough room for having family parties.

D.They sell special gifts for Mother’s Day and Father’s Day.

46.What do you know from the passage?

A. Mother’s Day and Father’s Day are both in May.

B. Fewer women worked outside the home in the past.

C. Not all the children respect their parents.

D. Fathers are not as important as mothers at home.

47.On Mother’s Day and Father’s Day,__________.

A. people usually have family parties

B. everyone goes to visit the cemetery

C. children always go to parents’ home

D. hand-made cards are the most valuable gifts

C

If you go into the forest with friends, stay with them. If you don’t, you may get lost. If you get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends―let them find you. You can help them find you by staying in one place.There is another way to help your friends or other people to find you.You can shout or whistle three times.Stop.Then shout or whistle three times again.Any signal given three times is a call for help.  

Keep up shouting or whistling. Always three times together. When people hear you, they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help. If you don’t think that you will get help before night comes, try to make a little house with branches. Make yourself a bed with leaves and grass.  

When you need some water, you have to leave your little branch house to look for it. Don’t just walk away.Pick off small branches and drop them as you walk in order to go back again easily. When you are lost, the most important thing to do is to stay in one place.

48.If you get lost in the forest, you should___________.

A.try to find your friends   

B.stay in one place and give signals

C.walk around the forest 

D.shout as loudly as possible

49.When you hear two shouts or two whistles, you know that________.

A.someone is afraid of an animal 

B.people will come to help you 

C.someone needs help 

D.something terrible will happen

50.What’s the meaning of the underlined sentence? 

A.Leave branches to find your way back.

B.Pick off branches to build another house.

C.Use branches to make a bed. 

D.Drop branches to look for water.

51.The main idea of the passage is__________.

A.how to travel in the forest

B.how to spend the night in the forest

C.what you should do if you want to get some water

D.what you should do if you are lost in the forest

D

How much paper do you use every year? Maybe you can’t answer this question quickly. In 1900 the world’s use of paper was about one kilogram for each person in a year. Now some countries use 50 kilograms of paper for each person in a year. But countries like America, England and Sweden certainly use more paper than other countries.

   Paper was first made in China about 2000 years ago. It was made from the hair-like parts of certain plants. Paper was not made in southern Europe until about the year 1100. In 1500, a German named Schaeffer found out that one could make the best paper from trees. After that the forest countries of Canada, Sweden, America, and Finland became the most important ones in paper making.

   When we think of paper, we think of newspapers, books and writing paper. But there are many other uses. Only half of the paper is used for books and things like that. Paper is very good for keeping you warm. Houses are often insulated(使绝缘, 隔离 ) with paper. You may see some men asleep on a large number of newspapers. They’re insulating themselves from the cold. In Finland the temperature is sometimes -40 centigrade (C). The farmers wear paper boots in the snow. Nothing could be warmer.

   Each year more and more things are made of paper. We have had paper cups and plates for a long time. But now we hear that chairs, tables and even beds can be made of paper. With paper boots and shoes, you can wear paper hats, paper dresses and paper raincoats. When you have used them away and buy new ones. People have made paper boats, but they haven’t made paper planes or cars. Just wait they perhaps will.

52. ______ use more paper than other countries.

A. Sweden

B. America

C. England

D. A, B and C

53. When was paper first made in southern Europe?

A. 2000 years ago

B. In 1100

C. In 1500

D. In 1900

54. Why do farmers in Finland wear paper boots in the snow?

A.Because they are so poor that they can buy only paper boots.

B.Because there are no other kinds of boots there.

C.Because paper boots are warmer than anything else there.

D.Because paper boots are so nice that they don’t like other kinds.

55. What should the best title of passage be?

A.Paper and Its Uses

B.Paper and Its History

C.Paper Was First Made in China

D.How Much Paper Is Used in A Year

 

 

陕西师大附中2008-2009学年度第二学期期中考试

高一年级英语试题

第II卷(共30分)

 

I .单词拼写(每题1分,共10分)

1.       He was very __________(暴躁的)when he got drunk

2.       I’ll tell him the news on his _________   (到达)

3.       The patient is __________(稍微) better today.

4.  Go __________(向东)to the end of the street and you will find the

book.

5.  In some countries, people eat too much fat and sugar. They should

eat a _____      (平衡的)diet to keep healthy.

6.  The sunrise is a beautiful ___________(景象)

7.  We are not _______(允许) to swim in the river. It’s too dangerous.

8.  The professor has brought in a good ________   (系统) of

teaching languages from abroad.

9.  Now we still don’t know whether life __________(存在) on Mars.

10.The house was _______     (围绕)by high walls

II语法填空(每小题1分,满分10分)

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在题目后标号为1l-20的相应位置上。

One day, Henry Adam, an American businessman, sailed out of the bay. ___11___ (luck), he was carried out to sea by a strong wind. Just when hope was about gone, he was picked up by a ship for London. In the ship he earned his passage by __12___ (work) without pay, as a common sailor. When he got to London he was almost penniless.

On the following morning Henry was wandering on the pavement ___13___a window behind him was raised, and a gentleman asked him to step in. He__14___(show) into a room where a couple of elderly gentlemen were sitting. A couple of days before these two old and wealthy brothers had been having a hot argument__15__might happen to a stranger in London __16__a friend and with no money except a million-pound bank-note. One said he__17__(starve) to death; the other said he wouldn't. So they agreed to decide it by a bet. They wrote__18__letter with the million-pound bank-note in it. Then the two brothers sat at the window a whole day watching for the right man to give it to until Henry came along.

After___19___had his story, one of them handed Henry an envelope, and said he would find the explanation inside. After promising__20__ to open it until 2 o’clock, Henry took his leave.

 

11           

12           

13           

14            

15            

16            

17            

18            

19             

20            

 

 

六、书面表达:(满分10分)

给你的笔友Lora写一封信,简单介绍中国农历新年。包括以下要点:

1.       春节对中国人来说是最重要的节日,在农历第一天;

2.       除夕夜家人团圆聚餐,人们通常会放鞭炮来迎接新年的到来;

3.       走访亲朋好友相互表达问候祝愿;

4.       给小孩压岁钱;前三天通常有舞狮或其它表演活动。

参考词汇:农历the lunar calendar  鞭炮fireworks 

问候greeting         压岁钱lucky money

舞狮 lion dances   

词数:80词左右。

 

 

                                                             

 

                                                          

 

                                                           

 

                                                            

 

                                                            

 

                                                            

 

                                                          

 

                                                            

 

                                                           

 

                                                           

 

                                                            

 

                                                            

 

                                                             

 

                                                           

 

                                                            

 

 

陕西师大附中2008-2009学年度第二学期期中考试

高一年级英语试题答案

听力原文

Text 1

M:Hello,Mrs. White,what can I do for you?

W:I don’t know what’s the matter with me?I’m always feeling tired.I’m usually worn out at the end of the day.

Text 2

M:We have plenty of time,you see.We won’*have to get back until late.So I think we should take the chance and see a bit of the countryside for a change.

W:I haven’t enjoyed a drive so much for ages.

Text 3

M:Oh, hello, Mary. I’d been expecting a call from you.I thought you said you were going to ring last night.

W:Yes.I know. It’s terrible.I just never seem to have a moment to spare these days.

Text 4

W: Have you got Mary's birthday present yet?

M: Yes. 1 got a shirt.

W: But I told you to get her a pullover or a skirt.

M: I know. But this shirt is very nice. Look!

Text 5

W: Good morning. What can I do for you?

M: is there a ship sailing for Hamburg next week?

W: Yes, there is. The Newcastle is sailing for Hamburg from Southampton next Wednesday.

M: Nine. Can you let me have a cabin for two?

W: Let me see. Yes, we can.

Text 6

W: When must the boys get on the coach?

M: The football match starts at two thirty but we should get there at half past one. The coach will pick us up at ten to one as it' 11 take us about 40 minutes to drive there. So we' 11 meet at the school car park. Don't be late, boys, will you?

Text 7

W: What can 1 do for you?

M: I'd like a fur cap, please.

W: What kind would you like? One of these, perhaps

M: Ah, that will do nicely. Can I try it on?

W: Certainly. This is a very popular cap, and it's of good quality, too.

M: What fur is it?

W: Sheep. What size do you take?

M: I' m not quite sure. I don't know Chinese sizes.

W: This is a 59. How does it fit?

M: Hmm. Good. How do I look?

W: It looks good on you.

M: How much shall I pay?

W: Two hundred and fifty-five.

听力1-5 CBCAA      6-10  BCABC

单选 11-15 CAACB  16-20 DDCBA  21-25 ACBBC

完型 26-30 ADBCA  31-35 CBDAB  36-40 CDADA

阅读41-43 CAB  44-47 DABD  48-51BBAD  52-55 DBCA

单词拼写 1. violent   2. arrival   3. slightly   4. eastwards 

5. balanced  6. scene/ sight  7 permitted/ allowed 8. system

9 exists 10 surrounded

语法填空

11.Unluckily   12. working    13. when   14. was shown 15. what   16. without   17. would starve  18. a     19.they     20. not

作文

The Chinese New Year is the most important festival for the Chinese people. It falls on the first day of the first month in the Chinese lunar calendar. On New Year’s Eve they have a family feast, people eat dumplings, fish and meat. After that they stay up to midnight to welcome the New Year with fireworks. On New Year’s Day, people visit their relatives and friends to exchange New Year’s greetings. Children receive “lucky money” wrapped in red paper. Lion dances,dragon dances and other performances are also part of the celebration, which usually last for three days.

 

试题详情

陕西师大附中2008-2009学年度第二学期期中考试

高一年级物理《必修Ⅱ》试题

  审题人:郭雄藩

试题详情

陕西师大附中2008―2009学年度第二学期期中考试

高一年级数学《必修5》试题

审题人  王 全

试题详情

陕西师大附中2008―2009学年度第二学期期中考试

高一年级化学试题

审题人  罗 春

可能用到的原子量:H―1 C―12 N―14 O―16  P―31  S―32  Cl―35.5

第Ⅰ卷(选择题,共55分)

试题详情

秦渠中学2009中考数学模拟试卷

试题详情