Practice 6  Yet just as we are beginning to recognize the tr

题目
问答题
Practice 6  Yet just as we are beginning to recognize the tremendous diversity of life in these areas, along with the potential benefits newly found species may hold for human society in the form of potential food products and new medicines, they are at risk of being lost forever. With enhanced ability both to identify where these species-rich areas are located and to trawl in deeper water than before, commercial fishing vessels are now beginning to reach down with nets the size of football fields, catching everything in their path while simultaneously crushing fragile corals and breaking up the delicate structure of reefs and seamounts that provide critical habitat to the countless species of fish and other marine life that inhabit the deep ocean floor.  Because deep sea bottom trawling is a recent phenomenon, the damage that has been done is still limited. If steps are taken quickly to prevent this kind of destructive activity from occurring on the high seas, the benefits both to the marine environment and to future generations are incalculable. And they far outweigh the short-term costs to the fishing industry.
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相似问题和答案

第1题:

We do not yet fully understand the implications of Einstein's______(relate)theory.


正确答案:
relativity[解析] relativity theory:相对论。

第2题:

We ( ) on it for many hours but we have not yet reached any conclusion.

A、have had worked

B、have been working

C、are working

D、work


参考答案:B

第3题:

Unluckily, when I dropped in , Dr. Smith (), so we only had time for a few words.

A、just left

B、was just leaving

C、has just left

D、had just left


参考答案:B

第4题:

We should make our reservations as far ( ) as possible to get the flight we want.

A. in detail

B. in advance

C. in reality

D. in practice


答案:B

解析:句意:为了得到我们想要的航班,我们应该尽可能提前预订。in detail意思是“全面地,详细地”;in advance意思是“提前”;in reality意思是“事实上”;in practice意思是“实际上”。

第5题:

I haven't finished yet. I just need _______ ten minutes.

A:another

B:other

C:the other

D:the others


正确答案:A 

第6题:

Which is not the characteristic of a successful teacher? __________.

A.use English most of time in every class

B.focus just on “finishing” the syllabus or textbook

C.have a practical command of English, not just knowledge of grammar rules

D.find time for ready communicative activities, not just practice of language forms


正确答案:B

第7题:

We should try to learn more (economy) ( ) theory and apply it in practice.


正确答案:economic 

第8题:

We ______our dinner when a policeman came to the door.

A. just had

B. have just had

C. just have had

D. had just had


正确答案:D

11.答案为D  当警察到门口的时候我们刚吃完饭。根据主句动作比从句动作早发生,因此时态比从句要早,是过去的过去,所以选过去完成式。

第9题:

They () so that we wouldn’t recognize them.

A、disguise

B、disguised

C、were disguising

D、were disguised


参考答案:D

第10题:

We've been looking at houses but haven't found ___we like yet.

A、one

B、ones

C、it

D、them


参考答案:A