【题目】With the living environment becoming worse and worse, most of the earth’s species are ______ forever.
A. dying awayB. dying offC. dying outD. dying down
在线课程【答案】C
【解析】
考查动词短语辨析。句意：随着生存环境变得越来越糟，地球上的大多数物种正在永远灭绝。A. dying away减弱；B. dying off相继死去；C. dying out灭绝；消失；D. dying down平息；逐渐消失。根据句意故选C。