When and why he came here ________ yet.A.is not known B.are not known C.has not known D.have n
题目
When and why he came here ________ yet.A.is not known B.are not known C.has not known D.have n
When and why he came here ________ yet.
A.is not known B.are not known
C.has not known D.have not been
那个正确,为什么
答案
A.is not known
When and why he came here
这是一个主语从句,看成是单数的主语
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
最新试题
热门考点
- 1/1×3+1/3×5+1/5×7+…+1/2009×2011.
- 作文以诚待人300字
- 哲学大哥们 帮帮忙 就几个多选题 多选、、、
- 看场电影怎么样的英文,马上要
- find sth done 有这个句型结构吗?
- 怎么用三角板画一个165°的角
- 若4x^2+(k-1)xy+9y^2是完全平方式,则k是()
- 一套服装先涨价20%,后来又打八折,现在卖480元,这套服装原价多少元?
- 鼓励自己的名人名言
- 输入一个百分制成绩,输出对应的等级A:>=90,B:80~89,C:70~79,D:60~69,E:=90,B:80~89,C:70~79,D:60~69,E: