( )I was walking along the street ____I met a friend of mine.A.while B.when C.as D.then
题目
( )I was walking along the street ____I met a friend of mine.A.while B.when C.as D.then
答案
B.
首先,C、D肯定不选,就看A、B
while 表状态,met是一瞬间的.
但如果是i met a friend of mine while i was walking along the street.这就对了
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