FeiFei-38，大家讨论后答案到底是什么，晕了

tweib

没想到这么久了，还有人为此题而发贴，作为楼主，做得不好啊，只顾忙于自己总结了

mindfree神仙是终结答案，其实结合后面的FF134就可更加明确，D其实是一种加强。

134. The more television children watch, the less competent有能力的 they are in mathematical knowledge. More than a third of children in the United States watch television for more than five hours a day; in South Korea the figure is only 7 percent. But whereas less than 15 percent of children in the United States understand advanced measurement and geometric concepts, 40 percent of South Korean children are competent in these areas. Therefore, if United States children are to do well in mathematics, they must watch less television.

Which one of the following is an assumption upon in advanced measurement and geometric concepts for United States children than are South Korean children?

A.      Children in the United States are less interested in advanced measurement and geometric concepts than are South Korean children.

B.      South Korean children are more disciplined about doing schoolwork than are

C.      Children who want to do well in advanced measurement and geometry will watch less television.

D.      A child’s ability in advanced measurement and geometry increases if he or she watches less than one hour of television a day. 　　E

E.       The instruction in advanced measurement and geometric concepts available to children in the United States is not substantially worse than that available to South Korean children. 　

lj_hq

我同意sunshning的观点，A排除了它因的可能性，说明了uv-B是唯一对基因有害的东西，加强了原文的结论，D中的栖息地原文并没提到，属于无关选项，大家觉得它有理是潜意识里进行了一种常识的推理，但狒狒说过做逻辑题最忌自己进行常识性的推理，一定要跟着原文走啊

mindfree

"mindfree神仙是终结答案" I totally disagree on this. Sorry tweid I made mistakes and I learned from them. Maybe only ETS can claim it is GMAT God.

Anyway, I stick to my answer in this one. A says "Of the various types of radiation blocked by atmospheric ozone..." Assume ozone also blocks UV-A, which also damages genes. So? Remember the conclusion of the argument is that depletion of ozone layer is to blame. So even if there are other radiations than UV-B that damage genes and can be blocked by ozone, it is still the ozone depletion that causes the problem. In other words, as long as the other radiations can be blocked by ozone, the conclusion would not change.

The answer will be different if: 1. the conclusion is that it is the UV-B that causes the decline in population, or 2. there are other radiations that cannot be blocked by ozone and can damage the genes.

Let me know whether the explanation above is clear.

lawyer_1

这题是LAST99年10月SECTION4的20题。答案为A没错。D是排除他因型支持。

missing_80

Mindfree gg 讲的好哦

mba174

同意MINDFREE 观点。 有帮助， 顶一下！

不管UV-B 是不是唯一的辐射， 反正都是它惹的祸。 要是题目说有其他的辐射小动物们就安然无恙， 那A才识加强。

foreinter

解释的很好

zenger

有人回帖，看来是关注此题．我也发个言．

本题答案是Ａ．

Ａ看似加强，其实不然．它只是把题目中已经确定的作用重新说了一遍，既没有提出新的支持，反而由于only实际上对可能的其它作用进行了限制．因此，Ａ的陈述实际上对题干的推理进行了限制和弱化．

Ｄ的排除它因加强的作用不言而喻，虽然的确隐含有＂居住地减少，会影响野生动物数量＂－－但这应该属于常识（至少在ＬＳＡＴ题目中应该是常识）

howardwang

以下是引用lawyer_1在2004-10-18 9:38:00的发言：
这题是LAST99年10月SECTION4的20题。答案为A没错。D是排除他因型支持。

支持!

amber0919