B. Ban on the use of animals in the lab should be enforced.

　　C. Greater efforts need to be taken to reduce the number of lab animals.

　　D. Scientists should be required to share their research results with each other.

　　答案：C　主旨大意题。由全文可知，主要讲述我们应该努力减少用动物做实验的数量。

　　65．Which of the following statements is true about animals used in the lab?

　　A．America uses only about l．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 limited data on the number of lab animals used each year.

　　答案：D　细节理解题。由第二段最后一句话“Japan and China have even less comprehensive data than America”可知，日本和中国实验用的动物数量很少。

　　66．Which of the following is mentioned as an alternative to replace animal experiments?

　　A. Statistical studies.

　　B. Computer models.

　　C．DNA planted in animals.

　　D. Tissue from dead animals.

　　答案：B　细节理解题。由第三段第二句话“Alternatives to animal testing, such as using human tissue or computer models, are now strongly recommended.”可知，可以用计算机模型或者人体组织替代动物做实验。

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