单项选择 1.Last Sunday he did almost nothing but___.
题目
单项选择 1.Last Sunday he did almost nothing but___.
单项选择
1.Last Sunday he did almost nothing but___.
A.sleep B.sleeping C.slept D.sleeps
2.The days get___in autumn.
A.short and short B.short and shorter C.shorter and shorter D.longer and longer
答案
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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