中考数学选择题专项训练（八）做题时间：_______至_______ 家长签字：_____________共__________分钟 日 期：_____月_____日1．[A] [B] [C] [D] 3．[A] [B] [C] [D] 5．[A] [B] [C] [D] 7．[A] [B] [C] [D]2．[A] [B] [C] [D] 4．[A] [B] [C] [D] 6．[A] [B] [C] [D] 8．[A] [B] [C] [D]一、选择题（每小题3分，共24分）1． -2是【 】A．负有理数 B．正有理数 C．自然数 D．无理数2． 实数a在数轴上对应的点如图所示，则a，-a，-1的大小关系是【 】A．-a