It is easy to compress a gas;it is just a of reducing the space between molecules. A.questi——青夏教育精英家教网—

摘要： It is easy to compress a gas;it is just a of reducing the space between molecules. A.question B. matter C.business D. problem

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It is easy to compress gas; it is just a ______ of reducing the space between molecules.

A. question　　　　　　　　 B.problem　　　　　　　　　　 C.business　　　　　　　　 D.matter

A. question　　　　　　　　 B.problem　　　　　　　　　　 C.business　　　　　　　　 D.matter

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