英语口语 话题是 what is the most serious problem in the world ? why do you think so?what can we do
题目
英语口语 话题是 what is the most serious problem in the world ? why do you think so?what can we do
to solve the problem?
答案
I think the most serious problem in the world is environment,because ,as we all see,there are more and more natural disasters happening now ,many pepole in the world are suffering due to the increasing bad weather .and the earth is becoming more and more warm because of the CO2.what we can do is to limit the wasted gases emission and plant more trees ,the most important is to warn pepole that our earth is getting worse
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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