1.They think she is wrong,_____ _____(变反意疑问句)
题目
1.They think she is wrong,_____ _____(变反意疑问句)
2.My mother ate nothing this morning,______ _______(变反意疑问句)
答案
1.They think she is wrong,【isn't she?】
2.My mother ate nothing this morning,【did she?】
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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．
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