下列各题中各有一处错误,请改正
题目
下列各题中各有一处错误,请改正
1.The old man is very pleased seeing us again.
2.I often dress up as a ghost in Hallween.
3.We donated enough statineries to the students in the pool areas.
4.Each of the students in our class have an English-Chinese dictinary.
5.You need to exercise much and watch less Tv than before.
答案
问老师..
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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