一道英语单选题,帮忙翻译并简析,不胜感激
题目
一道英语单选题,帮忙翻译并简析,不胜感激
A conductor was invited to keep us_____in the singing at the School Art Festival.
A.in common B.in advance C.in time D.in return
答案
A conductor was invited to keep us_____in the singing at the School Art Festival
B.in advance
提前作好准备
A.in common（通常） C.in time （准时,按时赶到）D.in return（回报）
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