填空题

Acid rain has made numerous lakes so acidic that they ______.

【参考答案】

no longer support fish populations
<上一题 目录 下一题>
热门 试题

填空题
Increased ultraviolet radiation would lead to a growing number ______.
填空题
The layer that serves to shield Earth from the Sun’s harmful ultraviolet rays is called ______.
相关试题