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同学们,你们经过一学期的学习,也许感到有点儿疲倦了,那不妨轻松一下,开动一下你的脑筋,想一想下面的问题怎么解答。
Students, you may feel a bit tired after a semester of study. You may wish to relax and start your brains. Think about how to answer the following questions.