英语作文 爬山的好处
题目
英语作文 爬山的好处
答案
Mountaineering is the sport,hobby or pr ofession of walking,hiking,trekking and climbing up mountains.It is also someti mes known as alpinism,particularly in E urope.While it began as an all-out atte mpt to reach the highest point of unclim bed mountains,it has branched into spe cializations addressing different aspect s of mountains and may now be said to consist of three aspects:rock-craft,sno w-craft and skiing,depending on wheth er the route chosen is over rock,snow o r ice.All require gre at athletic and techn ical ability,and experience is also a very important part of the matter.
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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