初一地理基础训练答案人教版

p1、2、3、4、

DACA

5、6、7、8、

BDAB

9、10、11、/

CBC/

能力提升

12、（1）六；亚欧；印度洋

（2）亚欧；印度洋

（3）位于板块的交界处，地壳不稳定，多火山和地震

13、（1）①亚欧；②非洲；③印度洋；④太平洋；⑤美洲；⑥南极洲

（2）印度洋

（3）环太平洋火山地震带；地中海一喜马拉雅火山地震带

（4）亚欧；太平洋；印度洋

14、（1）一致，因为高大山脉基本上是板块挤压形成的，都在板块的交界地带；

而板块交界地带地壳不稳定，也正是火山、地震的多发地带。

（2）我国海岸线基本上处于太平洋板块和亚欧板块的交界地带，两大板块互相挤压，形成

了东部山脉。

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七年级上数学练习册答案人教版第一章有理数 §1.1正数和负数（一）一、1. D 2. B 3. C 二、1. 5米 2. -8℃ 3. 正西面600米 4. 90 三、1. 正数有：1,2.3,68,+123;负数有：-5.5, 13 ,-11 2.记作-3毫米,有1张不合格 3. 一月份超额完成计划的吨数是-20, 二月份超额完成计划的吨数是0, 三月份超额完成计划的吨数是+102. §1.1正数和负数（二）一、1. B 2. C 3. B 二、1. 3℃ 2. 3℃ 3. -2米 4. -18m 三、1.不超过9.05cm, 最小不小于8.95cm； 2.甲地,丙地最低,的地方比最低的地方高50米 3. 70分§1.2.1有理数一、1. D 2. C 3. D 二、1. 0 2. 1,-1 3. 0,1,2,3 4. -10 三、1.自然数的集合：｛6,0,+5,+10…｝整数集合：｛- 30,6,0,+5,-302,+10…｝负整数集合：｛-30,-302… ｝分数集合：｛负分数集合：｛ 12

12 23 ,0.02,-7.2,2, 1011 ,2.1…｝ ,-7.2, 1011 … ｝非负有理数集合：｛0.02, 2 23 ,6,0,2.1,+5,+10…｝； 110 2. 有31人能够达到引体向上的标准 3. (1) §1.2.2数轴一、1. D 2. C 3. C 二、1. 右 5 左 3 2.4 12 (2) 12009 3. -3 4. 10 三、1. 略 2.(1)依次是-3,-1,2.5,4 (2)1 3. ±1，±3 §1.2.3相反数一、1. B 2. C 3. D

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