单选： 1.-What do you want to be when you grow up? -____teacher like you. a.The b.An c.A d./
题目
单选： 1.-What do you want to be when you grow up? -____teacher like you. a.The b.An c.A d./
2.-Will you please answer the door? It____be your sistor.
-Sorry, I____. I'm feeding the rabbit.
a.must;mustn't b.may;can't
c.shall; will d.must; needn't
答案
C B
一二
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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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