单项选择题

Dogs raised indoors have a higher rate of the heartworm disease than that of dogs raised outdoors.

A.正确
B.错误
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The adult flea can locate the host according to the temperature and carbon dioxide.
A.正确
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法医学鉴定用到的微卫星分型常利用实时荧光定量PCR。 A、正确 B、错误
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