一道题 OG12-11

bjxiaobei

11. 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-air fires and wood-burning stoves.

Which of the following, if true, provides the most support for the argument above?

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.（为什么错了？）

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.（正确，为什么呢？）

谢谢~

ccmoomer

注意vallys后面的定语从句“where wood is used as the primary heating fuel”，说明山谷是以木材为主要加热燃料的地方，产生的烟污染了空气，因此，需要实施法律来管制。

veratobe

in vallys在这里限定了范围，还能有效support conclusion么？？？

nobody910

注意，B选项的"is done with oil and nature gas"，就说明已经在用oil 和 nature gas了，不用纠结法律是已颁布还是将颁布

bjxiaobei

Thank you !

我觉得你解释的很有道理~解决了我的疑惑！谢谢咯~

ScentyGuy

也就是说，用oil, gas作为原料的BBQ已经在A州里存在了。将来发生的只不过是法律的颁布而已~

ScentyGuy

个人觉得~

这里within the jurisdiction应该是指即将颁布的法律的有效范围，比如即将颁布的法律将在A州内实施，但是A州内的BBQ主要是由xxx的。~

bjxiaobei

谢谢

我想问一下，"within the jurisdiction covered by the proposed legislation"意思不是将要立法的吗？还是已经立法的？如果是将要的，后面所说的取暖方式不是还没有发生的吗？
谢谢

mba2013

(B) Within the jurisdiction covered by the proposed legislation, most

heating and cooking is done with oil or natural gas.
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既然大多数取暖是油汀或者天然气，那么焚木取暖的比例就小，那么即使不立法，

烧木头的情况也在少数，所以是weaken了argument。

(E) In valleys where wood is used as the primary heating fuel, the

concentration of smoke results in poor air quality.
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（题目已知）烧木头产生的烟有害，（E补充）焚木取暖是主要手段，会产生大量

的烟，即加重了题目中提出的害处，所以亟需立法规范，为support。