◎ 题干
A few years ago, scientists in the Antarctic became aware of ________ in the ozone layer.
[     ]
A. holes growing
B. holes to grow
C. holes' being grown
D. holes to be grown
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“A few years ago, scientists in the Antarctic became aware of ________ in the ozone layer.[ ]A. holes growingB. holes to growC. holes' being grownD. holes t…”主要考查了你对  【动名词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。