问题 选择题

如果a与b互为相反数,x与y互为倒数,则代数式|a+b|-2xy值为[ ]

A.0

B.-2

C.-1

D.无法确定

答案

答案:B

材料分析题

材料:2005年11月14日凌晨5时40分,山西长治市沁源县郭道镇汾(阳)屯(留)省道上发生特大交通事故。沁源县第二中学900多名学生在公路上跑操后调头转弯返校时,一辆东风带挂货车横冲直撞碾压过来,21人(包括一名教师)被撞身亡。 为了加强对学生安全教育,某校决定开展“安全教育月”活动,请你帮助完成以下问题:

(1)请策划:为此次活动设计一个主题。

                                                                                                                                                             

(2)请献计:你生活的校园和校园周边存在的哪些安全隐患问题?

                                                                                                                                                              

                                                                                                                                                             

                                                                                                                                                             

(3)请总结:开展“安全教育月”活动,你有什么收获?

                                                                                                                                                              

                                                                                                                                                              

单项选择题