She glanced about now and then____to make sue she was not being followed.
题目
She glanced about now and then____to make sue she was not being followed.
A so that B as though C even if D in case请问为何要选B?是不是省略了什么成份啊!
答案
省略了she ,因为从句的主语和主句是一样的
as though she want to make sure she was not being followed
意思是好象她想要确认没有被人跟踪.
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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