摘要： All substances, ＿＿＿＿＿ solids, liquids, or gases, are made up of entirely atoms. A. whether they B. whether C. whether are they D. whether are
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All substances, ＿＿＿＿＿ solids, liquids, or gases, are made up of entirely atoms.
A.whether they B.whether C.whether are they D.whether are
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