学习化学能让我们更好的认世界和了解生活。下列有关化学与生活的

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问题选择题

学习化学能让我们更好的认世界和了解生活。下列有关化学与生活的说法中正确的是[ ]

A.掏空沼气池前进行灯火试验

B.推广使用聚乙烯塑料包装食品

C.利用洗洁精的乳化功能清除油污

D.绿色食品不含任何化学物质

答案

答案：C

选择题

As we know, it's very polite to talk to each other. What would you say if you met a girl who is very heavy? [ ]

A. You used to be thin, didn't you?

B. You are too heavy.

C. You must lose your weight.

D. You are still heavier than me.

判断题

待执行合同变为亏损合同的，均需要确认预计负债。( )