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(本卷一至八大题共 2 4小题 ,满分 1 50分 ;考试时间 1 2 0分钟 ) 一、选择题 (本大题共 1 0小题 ,每小题 4分 ,共 40分 )。在每小题给出的四个选项中 ,只有一项是符合题意的。1 -2的相反数是 ( )A 12 B -12 C -2 D 22 x -( 2x -y)的运算结果是 (
(Volume one to eight major questions a total of 24 small questions, out of 1 50 points; test time 120 minutes) a multiple-choice questions (the title of a total of 10 small questions, each question 4 points, a total of 40 points). Of the four options given for each question, only one is consistent with the question. The inverse of 1 -2 is () A 12 B -12 C -2 D 22 x -( 2x -y) The result of the operation is (