Question

In the future, care for the environment will become very important as the earth's natural resources are _______.

A.pulling up B.running out

C.using up D.putting out

Answer

B

【解析】

考查动词短语辨析。句意：在未来，保护环境将变得非常重要，因为地球的自然资源正在枯竭。A. pulling up 停下来；B. running out耗尽；C. using up用尽；D. putting out 熄灭。分析句子结构，as the earth's natural resources are _______.是一个原因状语从句，表示现在正在发生的事情，用现在进行时。根据care for the environment will become very important 可知地球的自然资源正在枯竭，排除A和D；run out是不及物动词短语，不接宾语； use up是及物动词短语，后面接宾语，排除C。故选B。