Since it is midnight already,we ( )
题目
Since it is midnight already,we ( )
A.have better left
B.ought to have left
C.should ask for a leave
D.might as well leave
答案
D.might as well leave（as go on）,might as well do as do 是搭配 ：与其...（后者）,不如...（前者）
根据句意：既然已经半夜,还是走吧（不要再继续干了）.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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