用以下句型造句 (英语)
题目
用以下句型造句 (英语)
第一个句型:
is one of the + 最高级+名词复数
第二个句型:
It is + 形容词+ for sb.+ to do sth.
第三个句型:
It is a good idea to do sth.
答案
China is one of the biggest countries in the world.
It's dangerous for you to play with fire.
It is a good idea to have a walk in the sunny day.
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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