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标题: PP1-DS14 [打印本页]

作者: hitfm 时间: 2010-4-1 10:44 标题: PP1-DS14

14.
Is y between -2 and 1 on the number line?

(1) y is to the right of -1 on the number line.

(2) y is to the left of 2 on the number line.

【答案】E

合併兩條件取交集後得 -1< y < 2
y為0或1 符合題目範圍呀 ? 為何是E呢 ?

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