第二节　 听取信息(共5小题；每小题1分，满分5分)

听下面一段对话，请根据题目要求，从所听到的内容中获取必要的信息，填入答题卡标号为16-20的空格中。听录音前，你将有10秒钟的阅题时间，录音读两遍。你将有60秒钟的作答时间。

Suspect(嫌疑犯)

第一节　 听力理解(5段共15小题，每小题2分，满分30分)

每段播放两遍。各段后有几个小题，各段播放前每小题有5秒钟的阅题时间。请根据各段播放内容及其相关小题，在5秒钟内从题中所给的A、B、C项中，选出最佳选项，并在答题卡上将该项涂黑。

听第一段对话，回答第1-3题。

1. What is the probable relationship between the two speakers?

A. Teacher and student.

B. Boss and secretary.

C. Workmates.

2. What are the two speakers talking about?

A. Using the left hand.

B. Running machines.

C. Designing machines.

3. What can we learn from the conversation?

A. The woman only uses her right hand.

B. Left-handers can't run the machines.

C. The woman is more skillful than the man.

听第二段对话，回答第4-6题。

4. Where does the conversation most likely take place?

A. In a travel agency.

B. At the reception desk of a hotel.

C. At the booking office of the airport.

5. When must the woman leave her room?

A. At 2:00 p.m. tomorrow.

B. At 2:30 p.m. tomorrow.

C. At 3:30 p.m. tomorrow.

6. What suggestion does the man make for the woman' s departure(启程)?

A. The woman should leave the hotel at 2 p. m.

B. The woman should stay in the hotel for another day.

C. The woman should leave the hotel a bit earlier in case of traffic jams.

听第三段独白，回答第7-9题。

7. What does the woman think of working on movies?

A. Exciting but very hard.

B. Hard and boring.

C. Dangerous.

8. What kind of shots are used in the film?

A. The first shots.

B. The best shots.

C. The shots done by famous directors.

9. What does the woman ask the man to do?

A. Try to be a famous film star.

B. Visit the studio.

C. Come and see a film.

听第四段对话，回答第10-12题。

10. What is the weather like in the man's place now?

A. Windy and snowy.

B. Sunny but windy.

C. Cold and wet.

11. What is the weather going to be like in the woman's place?

　A. Sunny and warm.

　B. Windy and rainy.

　C. Sunny but cold.

　12. What is the woman's attitude towards the man's advice?

　A. She takes it seriously.

　B. She doesn't care about it.

　C. She worries about it.

　听第五段独白，回答第13-15题。

　13. What did a boy do?

　A. He suggested that they should build another road.

　B. He volunteered to dig another road.

　C. He volunteered to move the rock away.

　14. When was the rock no longer there?

　A. The following day.

　B. The second time.

　C. After a while.

　15. How did the boy solve the problem?

　A. He dug another road.

　B. He dug a hole next to the rock.

　C. He asked many people to move the rock together.

16．质量为m的长木板A静止在光滑水平面上，另两个质量也是m的铁块B、C同时从A的左右两端滑上A的上表面，初速度大小分别为v和2v，B、C与A间的动摩擦因数均为μ。(1)求B、C刚滑上长木板A时，A的加速度(2)为使B、C不相撞，A木板至少多长？

15．质量为m=5×10³ kg的汽车在t₀=0时速度v₀=10 m／s,随后以P=6×10⁴w的额定功率沿平直公路继续前进，经72s达到最大速度，设汽车行驶过程中所受阻力大小恒为f=2.5×10³ N。求：

(1)汽车能达到的最大速度v_m;　 (2)汽车在72s内经过的路程s。

14．.如图所示，一高度为h=0.2 m的水平面在A点处与一倾角为θ=30°的斜面连接，一小球以v₀=5 m/s的速度在平面上向右运动.求小球从A点运动到地面所需的时间(平面与斜面均光滑，取g=10 m/s²).

某同学对此题的解法为：小球沿斜面运动，则=v₀t+g sinθ·t²，

由此可求得落地的时间t.

问：你同意上述解法吗？若同意，求出所需时间；若不同意，则说明理由并给出你认为正确的解答。

13．荡秋千是大家喜爱的一项体育运动。随着科技迅速发展，将来的某一天，同学们也会在其它星球上享受荡秋千的乐趣。假设你当时所在星球的质量是M、半径为R，可将人视为质点，秋千质量不计、摆长保持为L、摆角小于90°、不计阻力，万有引力常量为G。那么，

(1)该星球表面附近的重力加速度等于多少？

(2)在摆角不大于90°的情况下，你经过最低位置时的速度v₀不能超过多少？

12．(9分)某探究小组设计了如下的探究橡皮筋的弹性势能与拉长量之间关系的实验：将一长木板放在桌面上并调至水平，橡皮筋一端固定在墙上，另一端被静止的小车拉长了d。小车释放后沿长木板运动，带动穿过打点计时器的纸带，如下图所示。打点计时器电源频率为50Hz，小车质量为0.2kg,实验进行了三组，各次小车由静止开始运动的位置不同(即橡皮筋的拉长量d不同)，分别打出纸带，选择了三条纸带如下图所示(图中最下面的是直尺)。

(1)根据纸带数据完成上面的表格，其中V_max为小车橡皮筋拉动的最大速度：

(2)橡皮筋的弹性势能E_p与橡皮筋拉长量d之间的函数关系式是E_p=　　　 。

(3)要减少实验误差，该设计可改进的措施是　　　　　　　　　　　　　 。

11．(3分)在利用重锤下落验证机械能守恒定律的实验中正确的是　　

A、应该用天平称出重锤的质量。

B、应该选用点迹清晰，第一、二两点间的距离接近2mm的纸带。

C、操作时应先放纸带再接通打点计时器的电源。

D、打点计时器应接在电压为4-6V的交流电源上。