9.　　　　 The exercises are extremely difficult, but half of the class　　　 　them ahead of time.

A. has already finished　 　　　　　　　　　　　　　　　 B. will finish

　C. have already finished　 　　　　　　　　　　　　　 D. finishes

8.　　　　 　　　　　the Internet is bridging the distance between people, it may also break some families or cause other family problems.

A. When　　　　　　　　　 B. If　　　　　　　　　　　　　　 C. While　　　　　　　　　　　 D. Since

7.　　　　 --Why do you look sad?

--There are so many problems　　　 　.

A. remaining to settle　 　　　 　　　　　　　 B. remained settling

C. remaining to be settled　　　　　　　　　　　　　　　 D. remained to be settled

6.　　　　 With the words, he　　　 　a wide-mouth jar from his pocket and set it on the table in front of him.

A. pulled out　　　　　　 B. checked out　　　　　　　 C. stuck out　　　　　　　　　 D. dropped out

5.　　　　 　　　　　,the idea of having to work under a woman defeated him.

A. Wanting the job very much　　　　　　　　　　　 B. Although wanting the job badly

C. Though he wanted the job very much　　　　 D. He wanted the job badly

4.　　　　 --James didn’t turn up last night, did he?

--No. He　　　 　.We had changed our plan.

A.shouldn’t have come　　　　　　　　　　　　　　　　　 B. needn’t have come

C. didn' t need to come　　　　　　　　　　　　　　　　　 D. needn't come

3.　　　　 Authorities face a(n)　　　 　task to persuade typhoon survivors to abandon their flood-stricken villages and relocate to lower and safer lands.

A. complex　　　　　　　 B. tough　　　　　　　　　　　 C. easy　　　　　　　　　　　　 D. sharp

2.　　　　 In 1778，Banks was elected　　　 　president of the Royal Society,　　　 　position he held for 42 years.

A. the; the　　　　　　　　 B.／；a　　　　　　　　　　　 C. a; a　　　 D／；the

第一节：单项填空(共20小题；每小题1分，满分20分)

1.　　　　 --I' m afraid that I can’t finish the task as soon as planned.

--　　　 　.

A. Don't be afraid　　　 B. Don't mention it　　　　 C. I suppose so　　　　　　　 D. Take your time

F_ABs_B=E_kB

动量与动能之间的关系为

m_Av_A=

m_Bv_B=

木板A的长度L=s_A－s_B

代入数据解得　 L=0.50m

试题展示

版权所有：()