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一、选择题.本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.
First, multiple-choice questions. The title of a total of 12 small questions, each small topic 5 points, a total of 60 points. In each of the four questions given in the four options, only one is to meet the requirements of the title.