Read the passage and fill in the blanks with proper words (在短文的空格内填入适当的词.使其内容通顺.每空格限填一词.首字母已给)1．At o——青夏教育精英家教网——

Read the passage and fill in the blanks with proper words (在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给)
1．At one time, making a film was an expensive activity for only for a small group of people and film companies. Not only were the tools and machines expensive but also the cost of film was also far greater than most people could afford. However, modern technology has c【小题1】 all that.
2．New technology has really opened up the world of film making for film fans. Now a camera does not cost m 【小题2】 and most young people are certainly able to pay for it. So all you need is to get one for yourself. With that, you may start your own film-making.
3．However, film-making is t【小题3】work. You probably need many other people to help you.
4．For example, the p【小题4】of actors and actresses is very important in your film. Of course, these actors and actresses may be your schoolmates, friends or family members. You don’t even need to pay them a cent while they are glad to be part of your job.
5．B【小题5】, you need to make up a story. Can you write your own one? If you have good imagination, you can create an attractive story e 【小题6】 . Many world-famous film maker and producers are also good story-writers. If not, perhaps you need someone else to write it for you. An excellent story is the key to making a s 【小题7】 film.

－Hi, Betty. Your skirt looks beautiful.
－_________.
A. Really? B. Oh, no. C. Thanks a lot.

－Happy New Year to you!
－_______.
A. You’re welcome
B. The same to you
C. Congratulations

－Do you mind my opening the window?
－______. Please do it now.
A. Of course not. B. Yes, I do. C. Certainly

如图13，杠杆重力不计，C点正好为BD的中点，BD=20cm，AD=80cm，当向上用力F_上=120N时，正好能撬动石头。若改为向下用力，则F_下=_______时，正好能撬动石头。

图甲所示是小明的调光灯电路图，他将粗细均匀的电阻丝AB通过滑片P连入电路，小灯泡的额定电压为6V。闭合开关S后，滑片P从最左端A滑到最右端B的过程中，小灯泡的I—U关系图像如图乙所示。（电阻丝AB的阻值不随温度变化），下面说法中正确的是( )

A．电阻丝AB的阻值为6Ω

B．小灯泡的最小功率为1.5W

C．电路中的最大功率是6W

D．滑片P从最左端A滑到最右端B的过程中，电压表示数变大

如图14是我国新研制的月球探测器（简称“月球车”）样机。

(1)宽大的上翼是太阳能帆板，能将____能转化为_____能。月球表面白天温度可达150℃，而夜间会降至－180℃。这是因为其表面是松软的沙地，沙子的比热容______（填“较大”或“较小”），且月球没有大气层，也不能起到保温作用。
(2)不怕冷热、轻巧敏捷的月球车装有“岩芯取样器”，能对月面岩石进行研磨并取回研究.你认为制作月球车的材料应具备哪些物理属性？（写出两点）
①____________； ②____________。
(3)表面凹凸很深的六只轮子状的“大脚”使它具有翻山越岭、万向行走的能力。用学过的物理知识解释“大脚”这样设计的原理。
①__________________________________________________；
②__________________________________________________。
(4)目前人类发射的探测器已飞出了太阳系，正向更远的太空飞去。如果探测器所受外力全部消失，那么探测器将______。

A．沿原来路径返回地球	B．沿原方向做匀速直线运动
C．立刻静止	D．沿原方向做减速直线运动

在庆祝海军成立60周年的舰艇检阅中，我国自主研发的核潜艇成为大家关注的亮点。
（1）潜艇从深海驶近江口时，为保持在同一深度，需要______(选填“进水”或“排水”)。潜艇受到外部水的压强______(选填“变大”“变小”或“不变”)。
（2）噪音量级是评量潜艇的一个重要指标。如果你是机动舱的设计者，你会怎么设计来减弱噪声？（一个即可）_________________________________。
（3）核潜艇以核燃料为动力。内部有个较小的__________，控制链式反应的进行。核反应有两种，其中核_____变无污染，是将来理想的替代能源。

按要求作图：
（1）图15为一雨滴接近地面时，匀速竖直下落。画出雨滴所受力的示意图。
（2）在图16上画出AB通过小孔在光屏上呈的像A’B’。
（3）图17为家庭电吹风的电路，请补画完整。要求：开关调至如图1档时，不工作；在2档时，为冷风；在3档时，为热风。

某校师生自制了一台电烘箱．电烘箱的电阻丝通过5A的电流时，每分钟可产生6.6×104J的热量．求：
(1)此时电阻丝的电功率；
(2)此时电阻丝的电阻；
(3)此时电阻丝的工作电压。

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