22. Let’s ______my scientific knowledge and your business skills and start a company.

A. connect　　　 B. relate　　　 C. combine　　　 D. put

第一节　 单项填空(共15小题，每小题1分，满分15分)

21. -Would you like to watch the basketball match with me this evening?

　 -______. I like basketball very much.

　 A. I’d love to　　 　 B. Not really　　 C. I wouldn’t go　 D. Thank you all the same

第二节(共15小题；每小题0.5分，满分7.5分)

请听下面5段对话或独白，选出最佳选项。

请听第6段材料，回答第6至8题。

6. What does the woman do part-time?

A. A cleaner.　　　　　 B. A guide.　　　 C. A teacher.

7. What is the most important reason why the woman likes the job?

A. She can get a high pay.　　

B. She can have more spare time.　

C. She can get a full work experience.

8. Which of the following is true about the man?

A. He hasn’t got a part-time job.

B. He thinks the woman’s job is easy.

C. He wants to do what the woman does.

请听第7段材料，回答第9至11题。

9. How long has the woman studied English?

A. For a couple of weeks.　　 B. For a couple of months.　　 C. For a couple of years.

10. Why does the woman feel so discouraged?

A. She finds it hard to write English well.

B. Nobody wants to communicate with her.

C. She finds it hard to learn English grammar.

11. What is the relationship between the speakers?

A. Teacher and student.　　 B. Father and daughter.　　 C. Classmates.

请听第8段材料，回答第12至14题。

12. What makes the woman feel glad?

A. The man will have more money.　

B. The man helps with her work.

C. The man has retired.

13. What does the woman do most probably?

A. An engineer.　　　 B. A designer.　　 C. A housewife.

14. What kind of person is the woman?

A. Kind.　　　　　 B. Cold.　　　　　 C. Selfish.

请听第9段材料，回答第15至17题。

15. Who is Jerry?

A. The man’s son.　　 B. The man’s pet dog.　　 C. The man’s brother.

16. How long will the man be away?

A. For 2 days.　　　　 B. For 4 days.　 　　C. For 6 days.

17. What can we learn from the conversation?

A. The man will buy food for Jerry.

B. The woman worries about Jerry’s sleeping place.

C. The man wants the woman to take Jerry when she goes out.

请听第10段材料，回答第18至20题。

18. What is the main topic of the report?

A. Where the oil spill occurred.　　 B. What caused the oil spill.　

C. How the oil spill was treated.

19.How many birds have died?

A. Less than 100.　　　 B. More than 100.　　 C. More than 1,000.

20.What does the oil company promise to do?

A. Do its best to prevent any more oil spills.

B. Get rid of all old ships at once.

C. Give the scientists much money.

第一节(共5小题；每小题0.5分，满分2.5分)

请听下面5面对话，选出最佳选项。

1. What does the woman ask the man not to do?

A. Use his good knife to cut the wood.　

B. Lend his good knife to others.

C. Buy a knife.

2. How does the man feel about the weather?

A. It is unexpected.　　 B. It is uncomfortable.　　 C. It is pleasant.

3. What can we know about the boy?

A. He wants to stay at home.

B. He wants to go out tonight.

C. He wants his mother to help him with his work.

4. What are the speakers talking about?

A. A pencil.　　　　 B. Time.　　　　　　 C. Luck.

5. Who sent the painting to the man?

A. His wife.　　　　 B. His daughter.　　　 C. His son.

18、如图所示，两个完全相同质量为m 的木板A、B 置于水平面上。它们的间距s=2.88m，质量为2m、大小可以忽略的物块C 置于A 板的左端。C 与A 之间的动摩擦因数为=0.22，A、B 与水平面之间的动摩擦因数=0.10，最大静摩擦力可认为等于滑动摩擦力。开始时，三个物体处于静止状态，现给C 施加一个水平向右，大小为mg的恒力F，假定A、B 碰撞时间很短且碰撞后粘连在一起，要使C 最终不脱离木板，

(1)A、B碰前A的速度是多少？

(2)AB最终速度是多少？

(3) 每块木板的长度最少要为多少？

17、某发电站通过升压器、输电线和降压器把电能输送给生产和照明组成的用户，发电机输出功率是100 kW，输出电压是250 V，升压器原副线圈的匝数之比为1∶20，输电线上功率损失为4%，用户所需要电压为220 V，则输电线的电阻和降压器的匝数比是多少？若有60 kW分配给生产用电，其余电能用来照明，那么可装25 W的电灯多少盏？

16、如图所示，边长为L的正方形线圈abcd 其匝数为n总电阻为r外电路的 电阻为R，ab的中点和cd的中点的连线OO^/ 恰好位于匀强磁场的边界线上，磁场的磁感应强度为B，若线圈从图示位置开始，以角速度ω绕OO^/轴匀速转动，则：(1)写出半个周期内，闭合电路中感应电流的瞬时表达式，以abcd流向为正

(2)从t =0 时刻到t = 时刻，电阻R上产生的热量是多少

(3)从t =0 时刻到t = 时刻，通过R的电荷量是多少

15、如图所示，ABC为一固定在竖直平面内的光滑轨道，BC段水平，AB段与BC段平滑连接。质量为的小球从高位处由静止开始沿轨道下滑，与静止在轨道BC段上质量为的小球发生碰撞，碰撞后两球两球的运动方向处于同一水平线上，且在碰撞过程中无机械能损失。求碰撞后小球的速度大小；

14．用半径相同的两小球A、B的碰撞验证动量守恒定律，实验装置示意如图斜槽与水平槽圆滑连接．实验时先不放B球，使A球从斜槽上某一固定点 C由静止滚下，落到位于水平地面的记录纸上留下痕迹．再把B求静置于水平槽前端边缘处，让 A球仍从 C处由静止滚下，A球和 B球碰撞后分别落在记录纸上留下各自的痕迹．记录纸上的 O点是垂直所指的位置，若测得各落点痕迹到 O点的距离：OM=2.68cm，OP=8.62cm，ON=11.50cm，并知 A、B两球的质量比为 2：1，则未放 B球时 A球落地点是记录纸上的_______点，系统碰撞前总动量 P与碰撞后总动量的百分误差＝ ____ %(结果保留一位有效数字)．

13、用如图所示的装置进行验证动量守恒的以下实验：

(1)先测出滑块A、B的质量M、m及滑块与桌面的动摩擦因数，查出当地的重力加速度g；

(2)用细线将滑块A、B连接，使A、B间的弹簧处于压缩状态，滑块B紧靠在桌边；

(3)剪断细线，弹簧迅速弹开后，测出滑块B做平抛运动落地时的水平位移为s₁，滑块A沿桌面滑行距离为s₂．

为验证动量守恒，写出还须测量的物理量及表示它的字母___________．如果动量守恒，须满足的关系是_________________．