◎ 题干

So far, the moon is the only one of the heavenly bodies in space ______ reached by manned spaceships.
A.that has beenB.what have beenC.which has been D.that have been
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“So far, the moon is the only one of the heavenly bodies in space ______ reached by manned spaceships.A.that has beenB.what have beenC.which has beenD.that have …”主要考查了你对  【therebe句型】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。