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All the substances, solids,liquids or gases,are made up of entirely atoms. [ ]A.

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All the substances, solids,liquids or gases,are made up of entirely atoms. [ ]A.

All the substances,______ solids,liquids or gases,are made up of entirely atoms.   [     ]A. whether they                                
B. whether    
C. whether are they                            
D. whether are

试题答案

B