【題目】There are over 58, 000 rocky objects in __________ space, about 900 of which could fall down onto __________ earth.

A. the; the B. /; the

C. the; / D. a; the

【答案】B

【解析】句意：太空中有58,000顆星體,其中有900顆左右可能墜落到地球上。第一空in space(在太空）為固定用法,用零冠詞，又如：in nature, in society;第二空后的earth意為：地球。獨(dú)一無(wú)二的星體需與定冠詞連用，又如：the moon, the sun。綜上所述,答案為B項(xiàng)。

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