Most birds find it safe to sleep in the trees, but ______ they have eggs or young chicks, they don't use a nest.

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• 1Yao Ming made it clear that he would never consider retiring from the NBA ______ he could recover his health.

  A.as long as

  B.as far as

  C.as well as

  D.as soon as

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• 2We went through a period_______ communications were very difficult in the countryside.

  A.which

  B.in which

  C.whose

  D.with which

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• 3_____ the fact that David failed in the competition ,his teacher thought he had done his best.

  A.benefit

  B.profit

  C.power

  D.advantag

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• 4The result of the study indicated that it was the type of fat ______ made the difference．   

  A.that

  B.what

  C.who

  D.as

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• 5So, ________ the government has a good system of control or can educate the people, the forests will slowly disappear.

  A.as long as

  B.when

  C.unless

  D.every time

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• 6When we are young, questions of _______we want to be when we grow up are common.

  A.which

  B.who

  C.what

  D.how

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• 7It was for a lifetime of unselfish work among the sick natives ______ the old doctor deserved to be honored.

  A.who

  B.that

  C.which

  D.whom

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• 8Faye's fondest memory is of last year, ______ the club gave a tea party for her birthday.

  A.that

  B.which

  C.where

  D.when

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• 9I like Emy, ________ she can be annoying（烦人的）at times.

  A.even though

  B.now that

  C.as though

  D.as long as

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• 10After several months' voyage, they came to _______ was called the “New World”.

  A.what

  B.where

  C.that

  D.which

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