江西南昌八年级上学期期末终结性测试数学试题扫VIP专享

2014— 2015 学年度第一学期南昌市期末终结性测试卷八年级 ( 初二 ) 数学参考答案及评分意见一、（本大题共8 题，每小题3 分，共 24 分）1．D 2. A 3．A 4．C 5．B 6．C 7. C 8. A 二、（本大题共8 空，每空 2 分，共 16 分）9. 10. a(x﹣3) 2，1 11. x=1，﹣ 1 12.6 每个图形 2 分三、（本大题共2 题，每小题5 分，共 10 分）13.解：原式 = ⋯⋯⋯⋯⋯⋯⋯2 分⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯4 分⋯⋯⋯⋯⋯⋯⋯⋯5 分14.解：（ 1）把任意一个分式除以前面一个分式，商都等于，2 分（2）第 7 个分式为：632157xxxyyy．⋯⋯⋯⋯⋯⋯ 5 分四、（本大题共4 题，每小题6 分，共 24 分）15．解：分三种情况：①22211131422xxxxxx ············································1 分； ·······················································2 分②222111122xxxxx····················································3 分； ····························································4 分③22211312122xxxxxx············································5 分． ··························································6 分16．解：原式 =xxxxxxx2341112=== ·····················································································4 分取代入，原式 =8.(注：不能取1 和 2）······················································· 6 分17. 解：（1）当 h=1000 米时，100088 20080 25d； ····························· 3 分（2） 122:8:8255nndd，∴所以他看到的水平线的距离是原来的倍. ······································ 6 分18. 解：（1）S△ACD= S△ ABC— S△A...