最佳答案:根据用途大体分为土木工程用,铸造用,农药用,化妆品用,Divides into the civil engineering according to the u
最佳答案:1.pick用作主动,好像比较口语化,但是书面介绍可以用is picked from2.the Yuanyang Rice higher than,这里要加一个