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| Riddles | |
| 作者姓名： | 谢宇晨 |
| 摘 要： | 1. There is something strange ( 奇 怪 的 ). It happens twice in a moment, but it never happens in a hundred years. Guess a letter (字母).2. What goes around the world but doesn’t move? Guess a thing.3. What’s the difference between an engineer (工程师) |
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