试题与答案

6个钉子_呻、Q、R、s、T和u放在7个不同的洞中,每一个钉子所占据的洞与其他钉子的

题型:单项选择题

题目:

6个钉子_呻、Q、R、s、T和u放在7个不同的洞中,每一个钉子所占据的洞与其他钉子的不一样。这些洞按从左到右的顺序从1到7编号,且一条直线均匀分布。钉子的放置仅须遵从以下条件:(1)P和Q之间的距离与R和S之间的距离相同;(2)T和U相邻,但先后位置不一定;(3)最左边的那个洞不能空着。

若U在2号洞,则下面哪一项一定正确

A.P在3号洞。

B.Q在4号洞。

C.R在5号洞。

D.T在1号洞。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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Dear Grace,

It is naturally that you don’t feel happy when you failed the mid-term examination. Though you failed the exam two months ago, you should have confidence in yourselves and felt relaxed so that you can do better in the coming exams. The reason why you feel too tiring to study may be because you are not confident. What you must do now are to organize your time well and be sure of yourself. Don’t work too late or too hardly. In this way you are more likely to get tired. If you miss your good days with your classmates, talking to your classmates about your worries. I’m sure they are willing to help me out no matter how busy they are.

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