砒石的用量()
A.0.002~0.004g
B.0.03~0.06g
C.0.3~0.6g
D.0.015~0.03g
E.0.05~0.1g
参考答案:A
印度共和国第一任 * * 是[ ]
A.卡斯特罗
B.纳赛尔
C.尼赫鲁
D.甘地
—Could I use your computer?
— .[ ]
A. Sorry. You can't use it
B. Sorry. I'm going to work on it
C. Yes, I can
D. No, you couldn't