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问题 单项选择题

关于“光化学烟雾事件”，下列哪项叙述是正确的（）。

A.污染物主要来自汽车尾气

B.多发生在早晨

C.主要污染物是SO2

D.多发生于寒冷季节

E.多发生于河谷地带

答案

参考答案：A

选择题

关于我国四大工业基地的叙述，正确的是（　　）

A．我国四大工业基地都分布在长江沿岸工业带

B．我国四大工业基地都分布在沿海工业带

C．辽中南工业基地是我国的综合性基地

D．沪宁杭工业基地是我国最大的重工业基地
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改错题

When I was a child, I once went on camping with my family in summer. We decided to make a barbecue in a valley where lay in a beautiful mountain. So we collected some tree sticks to make the fire. My father ask me if I could try to make a fire. I was happier to take the job. Then I tried to set fire to the wood with a match, and produced only smoke. Then my father said, “That’s the right way. I’ll show you how to do it. First use the small piece of wood because they catch fire easy. Then put the larger ones on the top of them.” My father helped him make a big fire.
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