单选题 The author implies that a BAC of 0.1 percent______

A、 is unreasonably high as a definition of drunk driving
B、 penalizes the moderate drinker while allowing the heavy drinker to consume without limit
C、 is well below the BAG of most drivers who are involved in fatal crashes
D、 proves that a driver has consumed five ounces of'80 proof spirits over a short time

【正确答案】 A

【答案解析】第一段第六句指出，虽然不到1%的司机，其酒精含量为0.1%左右也会造成致命的事故，他们也比没有饮酒的司机事故率高出27倍。可以看出，作者认为1%的标准过低。