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【单选题】

Which of the following statements is true about animals used in the lab ?
  • A.America uses only about 1 . 1 million lab animals per year .

  • B.Europe does not use mice and rats as lab animals at all .

  • C.Britain does not use as many lab animals as China does .

  • D.Japan has less comprehensive data on the number of lab animals used each year .

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