The girl is seriously ill.There is-----.A.nothing to do but send for a doctor
题目
The girl is seriously ill.There is-----.A.nothing to do but send for a doctor
B.something but to ask a doctor to come C.nothing to do but to send for doctor D.anything to do but sending for a doctor.选哪个,为什么
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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