According to some scientists,global warming()the survival of the

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