题目

选词填空 have a gift forbadly offas though taken placecome to lifeno wonder lose face （1） It seems it is spring alreadynow. （2） Great changes have in theschool over the past three years. （3） We have warm weather and fine days in spring, so all plants. （4） Your cooking is amazing and you really food. （5） The man with a mustache is not . Instead, he is anmillionaire.下列关于化学反应的说法中，正确的是                              A．反应前后质量守恒、体积守恒、分子数目守恒 B．反应物的质量总和等于生成物的质量总和 C．反应前后原子数目没有变，原子质量有变化 D．反应后生成了新物质，不是生成了新元素