Some conservationists fear that many endangered species will not be valued because ______.

外语类 专四 已帮助 人

Some conservationists fear that many endangered species will not be valued because ______.

A.scientists haven"t identified them

B.they are not charming enough

C.they could survive without protection

D.they are less beneficial to human

请帮忙给出正确答案和分析,谢谢!

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