27.As is natural,a snake like this be very dangerous.
题目
27.As is natural,a snake like this be very dangerous.
A.must B.may C.should D.can
答案为何为D而不是B
答案
may be 是在说明一种假设
ex:he may be a good son,but is not a good father.
但can be 是在称述一种事实
ex:he loves his son,if not because he has to take care of both his business and family by his own,he can be a very good father.
这里的can be 也是在称述事实.
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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