地球上所有的生物共有一个家,这个家就是[ ]
A.生物圈
B.大气圈
C.水圈
D.岩石圈
答案:A
Not until I shouted at the top of my voice his head.
A.did he turn
B.he turned
C.didn’t he turn
D.had he turned
储备型库房的主要作用是()
A.商品保管
B.分拣
C.配送