摘要:第一节 单项填空(共20小题; 每小题1分, 满分20分) 从各题所给的四个选项, 选出可以填入空白处的最佳选项.并在答题卡上将该项涂黑.21. medical examination will help us find our health problems in time. A.Regular B.Normal C.Common D.Ordinary

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