27. Susan enjoys walking at times, but ______ she rides back home.
A. mostly B. almost C. nearly D. most
26.( )-Would you like another cup of tea?
- _______? Thanks.
A. Do I B. Will I C. My I D. Am I
24.I have ____ a raincoat ____ an umbrella. That’s why I have to wait until the rain stops.
A. both; and B. either; or C. neither; nor D. not only; but also
( ) 25. Half of the class ____ done most of the work. The left ____ rather difficult.
A. has; is B. have; is C. have; are D. has; are
23.This pair of jeans looks nice _____ Sandy and she looks nice _____ blue.
A. in; on B. on; in C. for; on D. to; in
22.-My pencil is different from _________-.
-But ______ is the same as mine.
A. Tom; yours B. Tom; your C. Tom’s; your D. Tom’s; yours
21. My son is a musical boy. He plays ________ piano very well.
A. a B. an C. the D. \
A) 听录音, 选出与所听内容相符的图画。(读一遍)
B) 听5小段对话,每段对话后有一个问题,选出最佳答案。(读两遍)
( ) 6. A. They’re on the train. B. They’re in Beijing.
C. They’re on the plane.
( ) 7. A. Five. B. Thirty-five. C. Forty.
( ) 8. A. He would like to drink neither coffee nor water.
B. He would like to drink either coffee or tea.
C. He would like to drink water.
( ) 9. A. Australia. B. Japan C. China.
( ) 10. A .The desk. B. The bag. C. The library book.
C) 听对话或独白,每段对话或独白后有几个小题,选出最佳答案。
(读两遍)
听第1段材料,回答11~12题。
( ) 11. When is Jack’s father birthday?
A. This Sunday. B. This Thursday. C. This Saturday.
( ) 12. What are they going to do for Jack’s father’s birthday?
A. They’re going to have a party. B. They’re going to have a picnic.
C. They’re going to have a big dinner.
听第2段材料,回答13~15题。
( ) 13. Who is answering the phone?
A. Mary Smith B. Mr Menon. C. Mrs Menon.
( ) 14. What’s the woman’s telephone number?
A. 853-2736. B. 852-1736. C. 824-5736.
( ) 15. What should Mrs Menon do when she comes back?
A. Go to see Mary. B. Phone Mary. C. Take a message.
听第3段材料,回答16~20题。
( ) 16.Why does Li Lei have to get up early every morning?.
A. Because he wants to catch the early bus.
B. Because he wants to be the first to get to school.
C. Because his home is far from school.
( ) 17.How does Li lei go to school every day?
A. He walks to school. B. He runs to school. C. He rides a bike to school.
( ) 18.Li Lei’s family spends much money ______.
A. on his mother’s medicine B. on his school things C. on a new bike
( ) 19.Li Lei ran ___ in the boys’ 1,500 meters in his school.
A .fast B. faster C .fastest
( ) 20.What makes Li Lei become stronger and stronger?
A. Growing up. B. Keeping running to school. C. His father’s care.
笔 试 部 分 (90分)
下课后,及时记录学生活动基本情况、教学效果,以及没有估计到的突发情况和采取的应急措施,并构想改进方法.也可找个别学生了解情况,使教学效果的鉴别接近实际。
我们已经复习了牛顿定律、动量定理和动量守恒、动能定理和机械能守恒。它们分别反映了力的瞬时作用效应、力的时间积累效应和力的空间积累效应。解决力学问题离不开这三种解题思路。在比较复杂的题目中,这三种手段往往是交替使用的。
3.碰撞中应重点掌握以下内容:
(1)一般的碰撞可以分成三种类型,即弹性碰撞;完全非弹性碰撞;非弹性碰撞。
(2)弹性碰撞结束后,由于遵守动量守恒和动能守恒,所以通过计算可求出碰撞以后的结果.
(3)完全非弹性碰撞可求出碰后的共同速度,物体发生相互作用时,当在某一时刻,物体的瞬时速度瞬时相等时,可用完全非弹性碰撞的模式求出瞬时相等的共同速度。
(4)实际中的碰撞大多属于非弹性碰撞,界于弹性碰撞和完全非弹性碰撞之间,碰后情况由物体的弹性性质决定。
(5)碰后情况定性分析,应满足三个条件:①碰撞前后系统总动量守恒;②碰撞前后遵守总能量守恒,例如两小球碰后由于有光能、内能、声能的产生,总动能应该减小;③碰撞过程应符合实际情况,例如两球碰撞后的左右位置不能调换。
2.动量守恒定律中应重点掌握以下内容:
(1)动量守恒定律针对一个合外力为零的系统,使用时应在物理过程中找一个合外力为零的系数及有关状态列出方程。
(2)使用动量守恒定律解题一般可以规定正方向,引入正负号,把矢量运算转化为代数运算。
(3)解同一道题有时可以选若干个系统和若干个相关的状态,注意系统与系统、状态与状态之间的联系。
(4)认真细致地搞清物理图景,摸清物理过程的发展和演变规律,针对不同的发展变化阶段,适用相关的规律列出方程。
(5)解决较复杂的习题,需要动量守恒定律和前后相关的物理规律的综合应用,使用时要注意规律间的联系和使用条件方法上的区别。
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