However, at times this balance in nature is disturbed, _______ a number of possibly unforeseen effects.

试卷相关题目

• 1John admitted ________ the window and promised to compensate for it. 

  A.break

  B.to break

  C.breaking

  D.to breaking

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• 2The world can't wait ________ the film, Inception 《盗梦空间》, at the moment.

  A.to see

  B.seeing

  C.seen

  D.see

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• 3_____ into English, the sentence was found to have an entirely different word order.

  A.Translating

  B.To translate

  C.Having translated

  D.translated

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• 4______that blood diseases are going to continue, we'll have to______ them.  

  A.Assumed; doing research at

  B.Assuming; do research on

  C.Assuming; do research for

  D.Being assumed; do research on

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• 5Our teacher suggests ______ English every day to improve our spoken English.

  A.practising to speak

  B.to practise to speak

  C.to practise speaking

  D.practising speaking

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• 6Full_________ to looking after three children at home, she no longer has time to enjoy the various activities in the club.

  A.attached

  B.occupied

  C.contributed

  D.devoted

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• 7Aluminum isn't found free in nature, owing to its always _______ with other elements, most commonly with oxygen.

  A.being combined

  B.having combined

  C.combine

  D.combined

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• 8Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight.

  A.to invite

  B.inviting

  C.invited

  D.invite

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• 9When ______ different cultures, we often pay attention only to the differences without noticing the many similarities.

  A.compared

  B.being compared

  C.comparing

  D.having compared

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• 10Programmes, ______ to bring the old and the young together, are growing in popularity all over the world．

  A.designed

  B.to be designed

  C.designing

  D.having designed

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