用a或an填空,补全句子
题目
用a或an填空,补全句子
1.he studies in __ middle school.
2.it is __ interesting book,and i like it very much.
3.she is __ famous film star in the world.
4.there is __ “U”and __ “E”on the blackboard.
答案
1.he studies in _a_ middle school.
2.it is _an_ interesting book,and i like it very much.
3.she is _a_ famous film star in the world.
4.there is _an_ “U”and _an_ “E”on the blackboard.
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