At present，there is little doubt ________ short message plays an increasingly important role in our lives．

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• 1_______in the ocean, it becomes powerless once it is on the beach.

  A.However a whale is powerful

  B.However powerful a whale is

  C.Whatever a powerful whale is

  D.Whatever powerful a whale is

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• 2______ so much salt in the Dead Sea that people won't get sunk.

  A.It exists

  B.T here has existed

  C.There exists

  D.It has existed

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• 3It is only _______ your heart is really in it _______ you can play your best.

  A.that; that

  B.that; when

  C.when; that

  D.when; when

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• 4I have no doubt in my mind ______ they will be glad to see me.

  A.if

  B.whether

  C.that

  D.about

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• 5—Was it last summer ______ you luckily got an opportunity to spend your holiday in Hawaii ? —Not me . John was the lucky dog .

  A.that

  B.when

  C.which

  D.what

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• 6So far the majority of cloned animals have suffered from some different serious disorders, ______ died soon after birth.

  A.many of which

  B.many of whom

  C.many of them

  D.many of that

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• 7I wonder how many years ago ___________.

  A.did your father retire

  B.has your father retired

  C.your father retired

  D.your father has retired

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• 8______ left the door unlocked must be held responsible for the accident.

  A.Whomever

  B.Whoever

  C.Whatever

  D.Whenever

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• 9The new system is better _________ it provides faster access to the Internet.

  A.in that

  B.in which

  C.that

  D.where

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• 10The view _______ many scientists hold is _______ too much emission of carbon dioxide is destructive.

  A.what; that

  B.that; which

  C.that; that

  D.which; which

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