求助OG12--VERBALCR 43

stellapass

Laws requiring the use of headlights 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

这个题通过排除法，我能够选出E,但是对于怎样推出的E，看了OG解释后，还觉得不太明白，请教NN们，具体给解释一下~谢谢啦

醒醒Shine

manxeon 发表于 2011-9-2 12:29
远离赤道的高纬度国家白天能见度低，所以在这些国家白天开行车灯能够减少交通事故。美国大陆白天能见度比那 ...

楼主我有个特别特别疑惑的地方。。。
看了好几个解释，为啥都说美国大陆白天能见度就是别那些高纬度国家高？这是哪句话可以得出的结论？！
哭%>_<%

stellapass

thanks a lot~

manxeon

远离赤道的高纬度国家白天能见度低，所以在这些国家白天开行车灯能够减少交通事故。

美国大陆白天能见度比那些高纬度国家要高，所以白天开新车灯不会有效减少交通事故。所以相关法律规定即使在美国大陆生效，减少交通事故的有效程度不及高纬度国家。