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一、单项选择题1B 2D 3C 4C5C 6D 7C 8 D 9C10A11C 12B 13C14D15B16A17C18D19C20A二、多项选择题1ACD2ABC3ABCD4ABD 5ABCD6ABCD7AB8ACD9ABD10ACD三、判断题1× 2× 3× 4?
A multiple choice questions 1B 2D 3C 4C5C 6D 7C 8 D 9C10A11C 12B 13C14D15B16A17C18D19C20A Second, a number of multiple-choice questions 1ACD2ABC3ABCD4ABD 5ABCD6ABCD7AB8ACD9ABD10ACD Third, determine the problem 1 × 2 × 3 × 4?