According to some scientists,global warming()the survival of the whole human race.

According to some scientists,global warming()the survival of the whole human race.


A、

scares


B、

frightens


C、

threatens


D、

Fears


【正确答案】:C
【题目解析】:

根据一些科学家的说法,全球变暖威胁着人类的生存。此处应选威胁threaten 一词。scare 使人害怕; frighten 恐吓;fear 害怕,担心


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