求高手阅读36套Ex22的一个短文章

juratbyrUID: 3079200

5. When a driver is suspected of having had too much to drink, testing the driver's ability to walk a straight line gives a more reliable indication of fitness to drive than does testing the driver's blood-alcohol level.

Which of the following, if true, best supports the claim made in the statement above?
(A) Not all observers will agree whether or not an individual has succeeded in walking a straight line.
(B) Because of genetic differences and variations in acquired tolerance to alcohol, some individuals suffer more serious motor impairment from a given high blood-alcohol level than do others.
(C) Tests designed to measure blood-alcohol levels are accurate, inexpensive, and easy to administer.
(D) More than half the drivers involved in fatal accidents have blood-alcohol levels that exceed the legal limit, whereas in less-serious accidents the proportion of legally intoxicated drivers is lower.
(E) Some individuals with high blood-alcohol levels are capable of walking a straight line but are not capable of driving safely.


我实在搞不清，B和D的区别在哪儿？？为什么D不对.......求高手

babyenochUID: 3153670

你看一下D选项的翻译：
在致命的事故中，超过一半的司机血液中酒精含量超过了法律规定的限制；然而，在不很严重的事故中，喝醉的司机（法律上所规定的喝醉，也就是血液酒精含量超过法律规定的限制）比例要低一些。
我如果没记错这道题应该是想让我们提供一个证据支持  用走直线的检测方法替代测血液酒精含量吧
这样就很明显了吧，这条论据显然是支持不了的，同样也不能削弱~

juratbyrUID: 3079200

真的很感谢你的解析