look at one’s face that shows his feelings.speak to somebody by telephone.
题目
look at one’s face that shows his feelings.speak to somebody by telephone.
答案
看着某人脸可以表现出他的感受 和某人用电话交谈 O(∩_∩)O~
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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