Should middle school students have their mobile phones?And tell us why?
题目
Should middle school students have their mobile phones?And tell us why?
英语比赛的问题,用至少五句话回答.
答案
It will be all right if these middle school students can use their mobile phones properly.
First of all,don't use the mobile phones in class in order not to affect normal study.It is better for you to shut off your mobile phone during the class.Once any emergent things happen,it will be easy for you to call police or your family any time and any where by using your mobile phone,and if your teachers,classmates or other people need to contact someone by phone,you can also do them a favour by lending them your mobile phone.
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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