单选题 Although compact cars make up only 38 percent of the vehicles in traffic, 48 percent of the cars that are followed too closely ("tailgated") are compact. On the other hand, fewer than 27 percent of the cars tailgated are middle-sized, even though middle-sized cars make up 31 percent of the vehicles in traffic.
Which of the following, if true, most contributes to an explanation for the phenomenon described above?

A、 The shape of compact cars makes it easy for a tailgater to see far enough ahead around such cars to minimize the chances of a rear-end collision.
B、 Middle-sized cars, owned by families with children and pets, are likely to have bumper stickers that are so interesting to read that tailgaters stay behind such cars longer.
C、 Compact cars sometimes have superior engines that allow them to pass middle-sized cars on the highway easily.
D、 The percentage of cars on the highway that are middlesized has been steadily decreasing over the last decade.
E、 (E) Compact cars are often driven by fast drivers.

【正确答案】 A

【答案解析】[解析] 本题属于数学相关的题目，段落中出现了四个数字(表示为百分比)并涉及compact cars，middle-sized cars，tailgated cars和vehicles in traffic这四类车。数字38%与31%都比较于vehicles in traffic，48%与27%都比较于tailgated cars，所以都可以进行比较。但很明显后者之间的差值较前者更大，因此应着重寻求能解释这种差异的选项。若compact cars的车型使得tailgater有更多的优势从而减少了撞车的可能，如(A)所说，那么它在tailgated cars中占了更大比例，所以(A)为正确答案。