A number of animals on the earth because of pollution. [ ]A. disappear B. appear C. disappears D. appears 题目和参考答案——青夏教育精英家教网—

题目内容

A number of animals __ on the earth because of pollution.

[ ]

A. disappear
B. appear
C. disappears
D. appears

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动词运用。
阅读下面短文，用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。
（请将各小题的答案写在短文后相应的横线上。）

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