A.The man should buy a different meal ticket each month. B.Every individual has different eating habits. C.Buying the meal ticket won't save money for the man. D.The price of a meal varies from month to month.
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【简答题】国际通用的紧急求救信号是 [填空(1)] 。表示需要医疗救护的标志是 [填空(2)]A. SOSB. V