陈化作用不仅可使沉淀晶体()而且也使沉淀更为(),因为晶休整长大()变小,吸附杂质的量就小,()和()可加速陈化作用,缩短陈化时间.
参考答案:颗粒长大;纯净;总表面积;加热;搅拌
It is the teacher _____taught me when I was a child _____ I’m going to visit.
A.that, which
B.who, that
C.who, which
D.whom, that
棒球运动何时传入中国?