问题 单项选择题

* Eastern Standard Time

The table above shows the morning schedule for train X. If Juan took train X on Monday morning, did he arrive at station T on schedule ?()

(1)Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S.

(2)Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T.

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:B

解析:

(1)不充分,因为从(1)中我们只能得知,火车运行的时间与时刻表中的相一致,但却无从得知火车是否准时从S站出发,因此也无法推知Juan是否准时到达车站T;(2)充分,因为(2)中指出Juan在8:30到达办公室,是其到达车站T后的20分钟,由此可推知Juan到达T的时间为8:10,所以Juan准时到达了车站T。

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