[求助]大全-13-15

132．Woodsmoke contains dangerous toxins that cause changes in human cells. Because woodsmoke 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?
(A) The amount of dangerous toxins contained in woodsmoke 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.

Key: E, mine: B.  算支持什么理由呢？AIR POLLUTION 支持了是HEALTH RISK？

145．In Swartkans territory, archaeologists discovered charred bone fragments dating back 1 million years.  Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood, the most common tree around Swartkans.

Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?
(A) The white stinkwood tree is used for building material by the present-day inhabitants of  Swartkans.
(B) Forest fires can heat wood to a range of temperatures that occur in campfires.
(C) The bone fragments were fitted together by the archaeologists to form the complete skeletons of several animals.
(D) Apart from the Swartkans discovery, there is reliable evidence that early hominids used fire as many as 500 thousand years ago.
(E) The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids.

Key: E, mine: B. Cutting tools能推出use of fire吗? 我总觉得答案里应该有与fire 有关的信息吧。

132，E给出了原文的一个实际例子出来了，对原文有支持作用。B是无关选项。

145，有CUTTING TOOLS，那么可以推断出bone fragment是人为砍的结果。其他选项都无关或者提供了相反信息。

这道题的ｅ是对的。这两道题看来，你好像做题对问题不重视，只关注原文　和选项，这里是哪一个构成了文章的base ,文章是由下面哪一个为假设才成立的　，所以e 中的cutting tools连接了文中的前提　火　和　结论　人这两个方面　

欢迎指正。　

1.文章：说发现charred bone fragment,即为火 + bone fragment有联系，其中提到骨头烧焦的问题不比在实验当中（experimental)用当时普遍存在的白树枝烧起来的温度高，我认为可能是说在这些树枝未被烧毁前这些bone就被烧焦了，当然这里的问题其实不是考察的重点，重点只要看出火 + bone fragment有联系即可。

2。题目当中要求得到的结论是火+H人 有联系（H人能够使用火了）

3。E选项使bone fragment和H人 发生联系了，正好充当了1。 2 中的桥梁，从文章成功跨越到结论。。。其实，有一处明显的突破点是，文章根本没提到H人，而结论当中却说到了H人，所以必定选项中要出现H人才行，所以即使是不得已也只能选E了。。。。