英语改错(每句有一处错）
题目
英语改错(每句有一处错）
1.He has got a chair to sit,but nobody to talk with.
2.His parents are all teachers and they teach in the same school.
3.Tom is just five feet in high.
答案
1 He has got a chair to sit "on",but nobody to talk with.
2.His parents are "both" teachers and they teach in the same school.
3.Tom is just five feet in "height".
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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