The singer and dancer ( )our English evening.
题目
The singer and dancer ( )our English evening.
A.is to attend B.were to attend C.are to attend D.is to attend
答案
这道题可以选A或者D.
首先我们看主语,the singer and dancer的意思是这个歌手兼舞蹈家,是一个人,所以直接排除B和C.
若是主语是 the singer and the dancer,那么这个主语就是两个人了哦.
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．
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