【題目】 _______from the moon, our earth, with water _____about 70 percent of its surface, appears like a blue ball.

A. Seen; covered B. Seeing; covering

C. Seen; covering D. Seeing; covered

【答案】C

【解析】

試題分析：C；考查分詞用法。分詞做狀語時，如果動詞與后面的主語構(gòu)成主動關(guān)系，就使用現(xiàn)在分詞的形式，如果構(gòu)成被動關(guān)系，就使用過去分詞。本題的see與our earth構(gòu)成被動關(guān)系，所以使用過去分詞。With符合結(jié)構(gòu)中water與cover構(gòu)成主動關(guān)系，則使用現(xiàn)在分詞的形式。句意：從月球上看，因為有水覆蓋著，我們的地球似乎是一個藍色的球。根據(jù)句意，故選C

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