英语作文我们要节约用水50词左右
题目
英语作文我们要节约用水50词左右
答案
Don't Waste Water
A man is washing his clothes ,regardless of the notice above "Save the Water Please."
As we see ,water is the source of life.But there is very limited available water resources in our world.So we shouldn't waste it.Of course,we have to use it to drink,cook,wash,clean and etc.But we must remember not to use it extravagantly.If we didn't stop such wasteful habits,we would cut off the development of the world and the human life.
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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