帮我造句,每个词组一句：1.by no means 2.at fault 3.at a time 4.be bound to 5.commit to memory
题目
帮我造句,每个词组一句：1.by no means 2.at fault 3.at a time 4.be bound to 5.commit to memory
答案
1.She si by no means a good singer 她绝对不是一个好歌手2.Who was at fault in the accident?这次事故是谁的过错?3.Let your listener answer one question at a time.让你的听众一次回答一个问题.4.I will still...
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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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