Children's brains can't develop properly_______ they lack protein.

试卷相关题目

• 1I won't call you, ________ something unexpected happens.

  A.unless

  B.whether

  C.because

  D.while

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• 2We should do such exercises in the future, I think, _____ we did yesterday.

  A.as

  B.for

  C.about

  D.than

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• 3In some places women are expected to earn money _______ men work at home and raise their children.

  A.because

  B.but

  C.though

  D.while

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• 4Feathers fall to the ground slowly,________ stones fall much faster.

  A.but

  B.however

  C.while

  D.yet

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• 5Mother made a promise ________ I passed the college entrance examination she would buy me a mobile phone.

  A.that

  B.if that

  C.that if

  D.that whether

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• 61 won't call you, ________ something unexpected happens.

  A.unless

  B.whether

  C.because

  D.while

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• 7  I'm thinking about going to Germany this summer and I need your advice. You're the best person I know to answer my questions,____you're German.

  A.after

  B.before

  C.for

  D.unless

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• 8She was such a proud person that she would die _________ she would admit she was wrong.

  A.rather than

  B.until

  C.after

  D.before

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• 9_I like to have my photos taken_______there are mountains and rivers.

  A.there

  B.in which

  C.when

  D.where

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• 10—Did you visit the Summer Palace? —No.We could have, _______we spent too much time shopping.

  A.so

  B.but

  C.because

  D.though

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