见过这道题吗?
答错情有可原, 答对有两下子
What occurs once in July, twice in August, but never in September?
夏圆 1/9/2013
http://blog.sina.com.cn/u/2895031791
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来源: 文学城-夏圓
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答错情有可原, 答对有两下子
What occurs once in July, twice in August, but never in September?
夏圆 1/9/2013
http://blog.sina.com.cn/u/2895031791