If you decide to take __ train to Beijing,you may have quite a pleasant journey,but make sure
题目
If you decide to take __ train to Beijing,you may have quite a pleasant journey,but make sure
you get __ fast one.
A.a;a B.the;a C./;a D.a;/
答案
A.a;a 是对的.
take a train / plane / bus to ...乘搭火车/飞机/公交车去某地,泛指,用不定冠词a;后面表达“搭一趟快车”,也是泛指,用a
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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