“经营单位”栏应填:
A.广州A玩具有限公司440193××××
B.广州B玩具有限公司440194××××
C.440193××××
D.440194××××
参考答案:B
—How much shall I pay for the telephone call?
—You _____. It's free.
A.mustn't
B.shouldn't
C.don't have to
D.can't
硫磺的危害?