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Wood smoke contains dangerous toxins that cause changes in human cells. Because wood smoke presents such a high health risk, legislation is needed to regulate the use of open-airfires and wood-burning stoves.
Which of the following, if true, provides the most support for the argument above?
A
The amount of dangerous toxins contained in wood smoke is much less than the amount contained in an equal volume of automobile exhaust.
B
Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.
C
Smoke produced by coal-burning stoves is significantly more toxic than smoke from woodburning stoves.
D
No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.
E
In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.
【申友解析】
正确答案：E
题干：木材产生的烟含有危险的有毒物质会损伤人类的细胞。因此，应该立法规范户外燃烧木材的炉子的使用。
题目：下面哪一条可以支持题干的主张
分析：给出的信息量较小，题目也没有提供明显的标志，所以首先明确逻辑方向，正向逻辑，比较可能的答案思考方法是引入他因。
选项A，说木材产生的烟较汽车废气的危害小，在一定程度上逻辑方向相反，无法支持题干逻辑。
选项B，混淆关键对象，错误。
选项C，与A相似，逻辑方向相反！
选项D，说即使禁止了户外木材燃烧也对空气质量没什么帮助，逻辑方向相反！
选项E，在主要使用木材作为燃料的山谷里，空气质量因为烟雾聚集变得非常差。正确！
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