______ that the formation of the sun, the planets, and other stars began with th

游客2023-11-22 8

问题 ______ that the formation of the sun, the planets, and other stars began with the condensation of an interstellar gas cloud.

选项 A、It is believed
B、Believing
C、Being believed
D、To believe

答案 A

解析根据句意，选项B、C只构成分句，没有主句，选项D则只有主浯，没有其它成分。只有A项才构成It is+过去分词+that结构，使句意完整。

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