1.The light is ( ),He must be at home.A.off B.at C.in D.on
题目
1.The light is ( ),He must be at home.A.off B.at C.in D.on
2.Tomorrow is ( ) birthday of my daughter.
A.the fourth B.fourth C.four D.forty
答案
The light is 【 D 】,He must be at home.A.off B.at C.in D.on
Tomorrow is ( A ) birthday of my daughter.
A.the fourth B.fourth C.four D.forty
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
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