It is not much use learning long lists of words and their meanings by heart.We must learn words
题目
It is not much use learning long lists of words and their meanings by heart.We must learn words
not by themselves but in sentences
答案
用心去学一张表中的单词和它们的意思没多大用处,我们必须学单词是在它们句中的意思
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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