More than 70 percent of the surface of the earth water. [ ] A.is made up ofB.is
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![More than 70 percent of the surface of the earth water. [ ] A.is made up ofB.is](/pic/43_747050.jpg)
More than 70 percent of the surface of the earth ________ water.
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A.is made up ofB.is covered by C.are covered byD.are made up of试题答案
答案:B