从A.B.C.D四个选项中.选出可以填到空白处的最佳选项. All substances , solids, liquids, or gases, are entirely made up of atoms. [ ] A．whether theyB．whether C．whether are theyD．whether are 题目和参考答案——青夏教育精英家教网—

题目内容

从A、B、C、D四个选项中，选出可以填到空白处的最佳选项.

All substances (物质), ________ solids, liquids, or gases, are entirely made up of atoms.

[　　]

A．whether they

B．whether

C．whether are they

D．whether are

答案：B
提示：

含有状语从句的复合句中，若从句与主句的主语相同，且含有be，可以省去从句的主语和be.

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