题目内容
About _______ of the surface of the earth _______ covered with water.
A. three quarter, is B. three quarters, has C. three quarters, is D. three quarter, are
C 【解析】句意：地球表面大约四分之三被水覆盖着。be covered with意思是“被……所覆盖”，首先排除B答案；分数后面的名词为单数名词earth，根据主谓一致的原则，只能用is；quarter是可数名词，three quarters四分之三，故答案为C。
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