问题
单项选择题
On a certain day it took Bill three times as long to drive from home to work as it took Sue to drive from home to work. How many Kilometers did Bill drive from home to work ？（）
(1)Sue drove 10 kilometers from home to work, and the ratio of was the same for Bill and Sue that day.
(2)The ratio of for Sue that day was 64 kilometers per hour.
A.条件（1）充分，但条件（2）不充分.
B.条件（2）充分，但条件（1）不充分.
C.条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分.
D.条件（1）充分，条件（2）也充分.
E.条件（1）和条件（2）单独都不充分，条件（1）和条件（2）联合起来也不充分.
答案
参考答案：A
解析：
从(1)中可知，Bill和Sue两人上班的开车速度是一样的，而Bill所用的时间是Sue的3倍，所以Bill的家离公司的距离为Sue的3倍，即为3×10=30公里，所以(1)充分；(2)明显不充分，因为它没给出Sue开车上班的速度与Bill开车上班的路程之间的关系。