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________ the illegal mobile WAP sites worries many parents.

[  ]
A.

The children’s surfing

B.

The children surf

C.

The children surfing

D.

The children have surfed

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阅读表达。(共5小题;每小题2分,共10分。)

Counterfeit (假的) medicines are a widespread problem in developing countries. Like other counterfeits, they look like real products. But counterfeit drugs may contain too little or none of the active ingredients (原料) of the real thing.

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