The word“it”in paragraph 2(line 5)refers to

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• 1The black—and—blue symptom of a sprain is due to

  A.bleeding under the skin．

  B.pressing one’s ankle．

  C.a tight bandage．

  D.applying a cold pack．

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• 2A sprain is caused by

  A.ligament fibers of a joint being twisted．

  B.blood vessels being hurt in the foot．

  C.constantly changing body temperature．

  D.elevating one’s ankle．

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• 3We can infer from the passage that

  A.researchers have collected enough data on child maltreatment．

  B.more than 31，000 children under 15 are killed every year．

  C.many countries have set up special institutions for maltreated children．

  D.some children are also to blame for mal treatment．

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• 4Children are more likely to be maltreated if they

  A.cry a lot．

  B.are not good-looking．

  C.are over 4 years old．

  D.are quiet．

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• 5Child maltreatment can bring all the following consequences EXCEPT

  A.stress．

  B.suicide．

  C.heart disease．

  D.poor memory．

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• 6Once the initial cold pack is removed，what is to be done、

  A.Begin bandaging the ankle．

  B.Wait 30 minutes and then reapply the ice pack for 20 minutes．

  C.Keep the ankle in a position lower than your heart．

  D.Wait 20 minutes and then reapply the ice pack for 30 minutes．

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• 7The main idea of the passage is to explain

  A.how a sprain occurs．

  B.how to bandage an injured foot．

  C.how to treat a sprained ankle．

  D.how to reduce the temperature of a wounded area．

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