1. --What do the farmers do to make their living?
--____sheep and goats.
A. In order to feed B. For feeding
C. Raising D. Bccause of raising
2. The biggest problem of that area is the____good teachers and
____educational thoughts.
A. short of ; modern B. less of ; advancing
C. shortage of ; advanced D. little of ; advanced
3. Chemicals on the surface help to _____the building____being
damaged by rain and wind.
A. stop ;from B. keep ; from
C. prevent ; from D. protect ; from
4. What surprised us most was the use they ____the moderm
techniques so widely in such a small town.
A. took B. made of C. brought in D. had
5. chemicals can help to produce better crops but ____the environment.
Which of the following can NOT be putin the blank?
A. do bad to B. do harm to
C. are bad for D. are harmful to
6. _____research stations have been set up to make better tomatoes,
coteon, tobaccos etc.
A. A great deal of B. A plenty of C. Alarge amount of
D. A variety of
7. He is an honest bog ____.
A. to depend on B. to be depended on C. can be depended on
D. depending on
为什么这样选？希能说明理由！谢谢英语高手帮忙！

1. C采用排除法，该问句是就宾语进行提问，其他三个都是状语成分，故不选。

2. C 在第一个空里需要填名词形式，故其他三个被排除。

3. D.
stop...from是阻止。。。不。。。，，keep....from是使。。。免受。。。，
protect..from不但有免受的意思，还有保护的意思，故选。

4. B. make use of固定搭配

5. B. do harm to 对。。。有害。不选are harmful to是因为can 后应威be harmful to
6. B.

A,C都修饰不可数名词，a variety of是多种的意思，故选B
7. A

估计你搞错了吧？应该是dog. bog有厕所的意思。这里是动词不定式做定语的情况。在这里不用被动态。