穿化纤衣服入井以及出入井不按规定走出入口，不属违章行为。
参考答案：错
—Must I hand in my report now?
—No, you ______. You still have some time. [ ]
A. shouldn't
B. mustn't
C. needn't
D. can't
夏、商、周时期的调味品主要有（）
A.盐
B.糖
C.酱油
D.醋
E.豆腐
