巴西最大的露天铁矿位于[ ]
A.圣保罗
B.伊塔比拉
C.贝洛奥里藏特
D.里约热内卢
答案:B
Only then ________how much damage had been caused.
A.she realized
B.she had realized
C.had she realized
D.did she realize
(11·孝感)某种细胞的直径是5×10-4毫米,这个数是( )
A.0.05毫米
B.0.005毫米
C.0.0005毫米
D.0.00005毫米