题目

 I’m sure they haven’t forgotten the date of the meeting, but let’s send them an email just____.    A. in time           B. in case              C. at present            D. at last 答案:B函数f(x)=ln(x+1)-2x的零点所在区间是(  ) A、(12,1)B、(1,e-1)C、(e-1,2)D、(2,e)
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