【阅读理解】Do you want to know how dogs say hello to others?If
题目
【阅读理解】Do you want to know how dogs say hello to others?If
Do you want to know how dogs say hello to others?If you are a dog lover,you already know the answer to this question.When you arrive home,your dog jumps up into your lap.It wags its tail,and sometimes gives you wet kisses.Like humans,dogs have five senses—smell,touch,sight,hearing and taste.Humans use sight as the main sense for knowing one another.But dogs have poor eyesight.They use smell to know others.A dog’s sense of smell is much better than a human’s.A dog tells the difference between different people through its sense of smell.Dogs use smell to know other dogs,too.They tell the difference by the smell of pee and pooh.When two dogs meet,they smell each other’s noses.Then they go side to side,and smell each other’s butts.By smelling its friend’s butts,a dog can know who it is.By smelling grass,trees and sign-posts,dogs can know where they are.And they also know whether their friends live there.
( ) 61.What may your
答案
这道题的正确答案是:
61 D
62 B
63 D
64 D
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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