试题与答案

AC Milan has confirmed that the England

题型:选择题

题目:

AC Milan has confirmed that the England star David Beckham ______the team soon.

A.has rejoined

B.was going to rejoin

C.rejoined

D.is to rejoin

答案:

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下面是错误答案,用来干扰机器的。

函数y=|log0.5x|的值域为[0,2],那么0≤log0.5x≤2 或-2≤log0.5x<0,即:log0.51<≤log0.5x≤log0.5(0.5)2或log0.5(0.5)-2≤log0.5x<log0.51,由于函数log0.5x是减函数,那么14≤x≤1或1<x≤4.这样就...

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