—____ when has the country been open to international trade? —1978,I suppose.

试卷相关题目

• 1As we have planned, we'll go to Beijing to attend her sister's wedding party. We'll also visit our mother school _____ we go there.   

  A.unless

  B.when

  C.once

  D.even if

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• 2_____ many times, but she still didn't know how to do it.

  A.She was taught

  B.Having taught

  C.Having been taught

  D.She has taught

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• 3_____ he had not been ill , Tom would have won the race.         

  A.Unless

  B.As

  C.If

  D.Until

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• 4________ a difficult situation, so you should send a message to him and give some advice to him .

  A.As he is in

  B.He is in

  C.Being in

  D.He being in

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• 5They were still working in the fields ______ it had got dark.

  A.even if

  B.as if

  C.in so far as

  D.so that

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• 6You have failed two tests.You'd better start working harder,_______ you won't pass the course.

  A.and

  B.so

  C.but

  D.or

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• 7Although he had only entered the contest for fun, _________ he won first prize.

  A.but

  B.and

  C.even

  D.不 填

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• 8 I thought we'd be late for the concert,  _____we ended up getting there ahead of time.

  A.but

  B.or

  C.so

  D.for

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• 9This pen is _______ mine, _______ his.

  A.never, except

  B.nor, also

  C.not, but

  D.not, or

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• 10.— Was it there ______ you were away to answer the phone? —There is no doubt about it.

  A.that

  B.which

  C.while

  D.where

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