1.Are there any _under the tree?-Yes,_.A.ducks;there are B.ducks;they are C.duck;there are
题目
1.Are there any _under the tree?-Yes,_.A.ducks;there are B.ducks;they are C.duck;there are
2.You are two_than me.A.year older B.years older C.years old
答案
A
B two-year older=two years older
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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