43.Laws requiring the use ofheadlights during daylight hours can prevent automobile collisions. However,since daylight visibility is worse in countries farther from the equator, any such laws would obviously be more effective in preventing collisions in those countries. In fact. the only countries that actually have such laws are farther from the equator than is the continental United States.
Which of the following conclusions could be most properly drawn from the information given above?
(A) Drivers in the continental United States who used their headlights during the day would be just as likely to become involved in a collision as would drivers who did not use their headlights.
(B) In many countries that are farther from the equator than is the continental United States, poor daylight visibility is the single most important factor in automobile collisions.
(C) The proportion of automobile collisions that occur in the daytime is greater in the continental United States than in the countries that have Daytime headlight laws.
(D) Fewer automobile collisions probably occur each year in countries that have daytime headlight laws than occur within the continental United States.
(E）Daytime headlight laws would probably do less to prevent automobile collisions in the continental United States than they do in the countries that have the laws.E
毛毛OG CR 分类中答案分析为：离赤道越远，DHL理应更有效阻止车祸，但是离赤道很远的国家有DHL的只有美国；DHL可以减少摩托车事故(摩托车？）。其他有该法律的国家距离赤道都比美国近，而DHL并没有十分有效（否则不会只有美国有该法律）。文章中好象没有提到美国有相应的法律，这里的解释分析是不是弄反了？
In fact. the only countries that actually have such laws are farther from the equator than is the continental United States
这句话的意思是：实际上，那些有这样法律的国家比起美国大陆更远离于赤道。
请问 is the continental United states, is 的前面省略了什么吗？这里的结构读起来非常的拗口，哪位大神帮忙解释一下，或者，IS 在这里可以被省略掉吗？谢谢！
the countries are farther from the equator than the continental United states is , 前面有ONLY， 所以，is 需要 倒装提前，这样理解正确吗？
-- by 会员 henryuan (2012/3/27 8:46:49)
the countries are farther from the equator than the continental United states is , 前面有ONLY， 所以，is 需要 倒装提前，这样理解正确吗？
-- by 会员 henryuan (2012/3/27 8:46:49)
个人理解如下：
该句中，than的后面是个倒装句，省略了表语far from the equator，正常语序为：...than the continental United States is far from the equator. 在GMAT中，表语置于句前，全句倒装，于是就变成了：...than far from the equator is the continental United States.又由于该比较分句中的表语，与前面主语的表语相同，因此，可以省略，最后就变成了：...than is the continental United States.
这里的only，不是倒装的标志。只有Only位于句首引导状语从句时，才倒装，比如：Only when the meeting is over can we know the decision.此处的only仅仅作定语修饰countries，因此不能说是倒装结构的标志。
本题的逻辑可以这样理解：实施该项法律的国家，距离赤道比美国距离赤道远——所以，这些国家白天的能见度比美国白天的能见度要低（从since daylight visibility is worse in countries farther from the equator可得知）——所以，该项法律对于这些能见度低的国家，更加有效（从any such laws would obviously be more effective in preventing collisions in those countries可得知）——由此，推出E选项：该项法律在美国的实施效果，会比不上其在那些已经实施的国家的效果。
-- by 会员 xn8510 (2012/3/27 16:39:04)
