to show that you enjoyed a meal,it is polite to compliment the host on the food.
题目
to show that you enjoyed a meal,it is polite to compliment the host on the food.
答案
为了表示你吃得很好,向主人夸奖饭菜是礼貌的行为.
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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