according to_World Health Organization,health care plans are needed in all big cities to prevent_
题目
according to_World Health Organization,health care plans are needed in all big cities to prevent_
spread of AIDS.
a.the / b.the the c.a a d./ the
2.it is generally believed that teaching is_it is a science.
a.an art much as b.much an art as c.as an art much as d.as much an art as
答案
1.b
2.d
包对
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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