中石油(华东)《科技英语》2017年秋学期在线作业（三）答案

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《科技英语》2017年秋学期在线作业（三）
一、单选题:【20道,总分:100分】


1.We must put the (    ) side of the policy into consideration to avoid possible mistakes.          (满分:5)
    A. converse
    B. reverse
    C. reserve
    D. revise
2.He(    ) have completed his work; otherwise, he wouldn't be enjoying himself by the seaside.          (满分:5)
    A. should
    B. must
    C. would
    D. can
3.You must speak slowly, so that you can make yourself (    )(    ).          (满分:5)
    A. understood
    B. understand
    C. understanding
    D. to understand
4.(    )for a long time, but he tried his best to catch up with his classmates.          (满分:5)
    A. Having been ill
    B. Being ill
    C. Though he was ill
    D. He had been ill
5.As parts of the world become (    ), millions of people will try to migrate to more (    ) areas          (满分:5)
    A. hospitable… uninhabitable
    B. uninhabitable… hospitable
    C. habitable… inhospitable
    D. inhospitable … uninhabitable
6.Scientists have discovered genetic variations that make people more likely to get (    ) on cigarettes and more prone to develop lung cancer.          (满分:5)
    A. retained
    B. hooked
    C. tired
    D. hanged
7.You can, (    )the sky is clear, see as far as the old temple on top of the mountain, but not today.          (满分:5)
    A. when
    B. where
    C. though
    D. because
8.By the time he arrives in Beijing, we (    )(    ) here for two days.          (满分:5)
    A. will stay
    B. have been staying
    C. will have stayed
    D. have stayed
9.He changed his name, (    )that nobody would find out what he had done before.          (满分:5)
    A. thought
    B. to think
    C. thinks
    D. thinking
10.Americans eat(    )vegetables per person today as they did in 1910.          (满分:5)
    A. twice as much
    B. as twice many
    C. twice as many
    D. as twice much
11.We’ve worked out a method by which our production can be raised on a large (    )          (满分:5)
    A. quantity
    B. scale
    C. quality
    D. proportion
12.The methods used to achieve these aims will be described later, and (    ) can be seen broadly as a focusing on to a target.          (满分:5)
    A. up to now
    B. so far
    C. as yet
    D. for the present
13.The taxi driver was put in (    )prison because his car had knocked down a child. His wife went to(    ) prison to see him twice a month.          (满分:5)
    A. /; /
    B. the; the
    C. /; the
    D. the; /
14.With everything she needed(    ),she went out of the shop, with her hands full of shopping bags.          (满分:5)
    A. bought
    B. to buy
    C. buying
    D. buy
15.If it(    )tomorrow, we will stay indoors to have our training class.          (满分:5)
    A. rains
    B. rained
    C. will rain
    D. is raining
16.(    ) is she in London than she rings up her old friend Mary.          (满分:5)
    A. Scarcely
    B. Rarely
    C. No sooner
    D. Hardly
17.Due to the limited seating (    ) of the hall, merely about 700 journalists were present for the press conference          (满分:5)
    A. capacity
    B. capability
    C. possibility
    D. probability
18.Many children,(    )parents are away working in big cities, are taken good care of in the village.          (满分:5)
    A. their
    B. whose
    C. whom
    D. those
19.It seemed as though nothing could stop the ship from wrecking itself on the shore, where leaking fuel or an escape of Norway rats could (    ) an ecological catastrophe(灾难) for wildlife.          (满分:5)
    A. release
    B. blunt
    C. trigger
    D. boost
20.Every country tries to maintain a(n) (    ) balance of trade, which assures it of the means to buy necessary imports.          (满分:5)
    A. organic
    B. favorite
    C. compound
    D. favorable
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