A student of English____limited exercises finds it hard to get good marks in an English exam.
题目
A student of English____limited exercises finds it hard to get good marks in an English exam.
A is used to deal with
B used to deal with
C is used to dealing with
D used to dealing with
答案
used to do:过去常常做某事
be/get used to doing:现在习惯于做某事
应该选C吧?好像是一般现在时.
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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