短文改错I will never forget my experience during the shanghai Expo,that has disturbed me a lot.
题目
短文改错I will never forget my experience during the shanghai Expo,that has disturbed me a lot.
I will never forget my experience during the shanghai Expo,that has disturbed me a lot.it was a saturday noon but many visitors were having a lunch on the grassland.I saw a foreign couple and a Chinese couple who have just finished their lunch.Without some hesitation ,the chinese couple threw their leftover food on the grass.Astonishing,the foreign couple said,"it's no good damaging the environment by littering carelessly."The word of the foreign couple struck my mind.It is time that we strengthen our awareness of environmental protection.The phenomenon for spitting and littering in public places should banned completely.
答案
把that改为which
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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