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A．To discover how long their ancestors lived.
B．To analyze how their appearance has evolved.
C．To find out how a disease has spread
D．To determine how closely groups of turtles are related.

A.To
B.
B．To
C.
C．To
D.To

【参考答案】

D
解析：How?is?DNA?used?in?the research?on?green?turtles?
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A．They bring too many things with them.B．They waste their time.C．They don't familiarize themselves with the campusD．They don't make realistic career plans.
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M：You are not planning to transfer to a different U.next year，are you？W：If I were，you’d be the first to know.What does the woman imply？（）

A．She doesn’t plan to continue studying next year.
B．She recently visited a different university.
C．She already told the man about her plans.
D．She isn’t planning to transfer to a different university.
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