og, 68 PLASE

Snazzy · 发表于 2003-12-13 11:59:00

Often visible as smong, ozone is formed in the atmosphere from hydrocarbons and nitrogen oxides, two major pullutants emitted by automobiles, react with sunlight.
a,ozone is formed in the atmosphere from
b,ozone is formed in the atmosphere when
c, ozone is formed in the atmosphere, and when
d,ozone, formed in the atmosphere when
e, ozone, formed in the atmosphere from

why 'as smog' here? how about using 'like'? thankx

ca3ltoys · 发表于 2003-12-13 12:33:00

answer is B? right?

Snazzy · 发表于 2003-12-13 12:40:00

yeah, but my question is not there

本贴相关题目 OG-2015-SC-88OG-2015-SC-88
OG-13-SC-88
OG-12-SC-84
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og, 68 PLASE

og, 68 PLASE

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本贴相关题目 OG-2015-SC-88OG-2015-SC-88OG-13-SC-88OG-12-SC-84 ... (FPXT)

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og, 68 PLASE

og, 68 PLASE

所属分类: 下线版块

正在浏览此版块的会员 ()

本贴相关题目 OG-2015-SC-88OG-2015-SC-88
OG-13-SC-88
OG-12-SC-84
... (FPXT)