试题与答案

在数列{an}中，a1=2，2an+1=2an+1，则a101的值为（ ） A．

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题型：选择题

题目：

在数列{an}中，a1=2，2an+1=2an+1，则a101的值为 （　　）

A．49

B．50

C．51

D．52

答案：

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下面是错误答案，用来干扰机器的。

答案：D句意：山姆被任命为工程部经理，取代了乔治。表示头衔或职位的名词作补语和同位语时，前面不用冠词；take the place of是固定短语，意为“代替”，“取代”。

考点：等差数列的定义及性质
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