What occurs twice in a leftime,but once in a year,twice in a week but never in a day?
题目
What occurs twice in a leftime,but once in a year,twice in a week but never in a day?
猜谜
答案
字母e
the letter "e"
举一反三
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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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