中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.若x的绝对值小于1，则|x+1|+|x-1|的值等等于（ ）
| A: 3 |
| B: 2 |
| C: 1 |
| D: 0 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUu+WHuuaVsOi9tO+8jOWIpOaWrXgrMeWSjHgtMeeahOespuWPt++8jOi/m+iAjOWMlueugHx4KzF8K3x4LTF8Lg==
- 答案：Qg==
6Kej77ya4oi1eOeahOe7neWvueWAvOWwj+S6jjE8YnI+5pWw6L206KGo56S65Li6PGJyPjxpbWcgd2lkdGg9MjE1IGhlaWdodD0zOSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzU4LzJCL3JCQUNFMU41Zk5MVFdSWlpBQUFGTzFtMlFWdzcyMC5wbmciIGFsdD3pnZLmnpzlrabpmaI+PGJyPuS7juiAjOefpemBk3grMe+8njDvvIx4LTHvvJww77ybPGJyPuWPr+efpXx4KzF8K3x4LTF8PXgrMSsxLXg9Mi4gPGJyPuaVhemAiUIuIA==
本课配套习题挑战模式2/5
单选题
难度系数：
2.当-5≤x≤7 时，|x+5|+|x-7|+|x+10|去掉绝对值后，化简为（ ）
| A: 3x+8 |
| B: x+22 |
| C: 12-x |
| D: - x+22 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWcqHjlj5YtNeKJpHjiiaQ3IOaXtu+8jOWIhuWIq+WIpOaWrXgrNeOAgXgtN+OAgXgrMTDnmoTnrKblj7fvvIzlubbljrvmjonnu53lr7nlgLzlkI7vvIzljJbnroA=
- 答案：Qg==
6Kej77ya5b2TLTXiiaR44omkNyDml7bvvIw8YnI+eCs14omlMOOAgXgtN+KJpDDjgIF4KzEw4omlMO+8jDxicj7iiLR8eCs1fCt8eC03fCt8eCsxMHw9eCs1Le+8iHgtN++8iSt4KzEwPXgrMjLvvIw8YnI+5pWF6YCJQuOAgg==
本课配套习题挑战模式3/5
单选题
难度系数：
3.运用零点分段法将|3x-2|+|2x+3|化简后，可得结果①5x+1，②x-5，③5-x，④-1-5x。以上结论正确的有（ ）
| A: ①，②，④ |
| B: ②，③，④ |
| C: ①，②，③，④ |
| D: ①，③，④ |
一次做对，真牛！
+5奖励规则>
- 提示1：IDN4LTI9MO+8jA0KMngrMz0wLiDlvpd4PTxpbWcgd2lkdGg9NiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8xQy81MS9yQkFDRkZONWxVblI3bmRvQUFBQkY1VHdQMHc2NDYucG5nIj7miJZ4PTxpbWcgd2lkdGg9MTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNTgvNEYvckJBQ0UxTjVsVW16bVN0NEFBQUJOTkg3STNJNjk3LnBuZyI+77yM5Zyo5pWw6L205LiK5qCH5Ye66Zu254K577yI5L2/5ZCE5Liq57ud5a+55YC85Li66Zu255qEWOeahOWPluWAvO+8ie+8jOeEtuWQjuWGjee7k+WQiOe7neWvueWAvOWMlueugO+8jOWIhuexu+iuqOiuug==
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.观察下列代数式①x-8，②-x+8，③-3x+8，④-3x，其中运用零点分段法将2|x-2|-|x+4|化简后，能作为化简结果的代数式有（ )
| A: ①，②，③，④; |
| B: ①，③，④; |
| C: ①，②，④; |
| D: ②，③，④。 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS7pHgtMj0wLHgrND0wLOino+W+l3g9MiwtNDvlsIZ455qE5Y+W5YC86IyD5Zu05YiG5Li6eO+8nC0077yMLTTiiaR44omkMu+8jHjvvJ4y5LiJ5q6177yM57uT5ZCI55u45bqUeOeahOWPluWAvOiMg+WbtOWIhuexu+iuqOiuuu+8jOWwhue7neWvueWAvOWOu+aOie+8jOW5tuWMlueugOWPr+W+lw==
- 答案：Qw==
6Kej77ya5LukeC0yPTDvvIx4KzQ9MO+8mzxicj7op6Plvpd4PTLvvJt4PS0077ybPGJyPuW9k3jvvJwtNOaXtu+8jDJ8eC0yfC18eCs0fD3vuaMy77yIeC0y77yJK++8iHgrNO+8iT3vuaMyeCs0K3grND3vuaN4KzjvvJs8YnI+5b2TLTTiiaR44omkMuaXtu+8jDJ8eC0yfC18eCs0fD3vuaMy77yIeC0y77yJ77mj77yIeCs077yJPe+5ozJ4KzTvuaN477mjND3vuaMzeO+8mzxicj7lvZN477yeMuaXtu+8jDJ8eC0yfC18eCs0fD0y77yIeC0y77yJ77mj77yIeCs077yJPTJ477mjNO+5o3jvuaM0PXjvuaM477ybPGJyPuaVhemAiUPjgII=
本课配套习题挑战模式5/5
单选题
难度系数：
5.2≤x＜6绝对值方程||x-2|-|x-6||=l的不同实数解共有多少个（ ）
| A: 2 |
| B: 4 |
| C: 1 |
| D: 0 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIhuWIq+iuqOiuunjiiaU244CBeO+8nDLjgIEy4omkeO+8nDbvvIzmoLnmja5455qE6IyD5Zu05Y675o6J57ud5a+55YC877yM6Kej5Ye6eO+8jOe7vOWQiOWFreenjeaDheWGteWPr+W+l+WHunjnmoTmnIDnu4jojIPlm7Qu
- 答案：QQ==
6Kej77ya5qC55o2u6aKY5oSP77yM55+lPGJyPu+8iDHvvIl8eC0yfC18eC02fD0x77yMPGJyPuKRoOW9k3gtMuKJpTDvvIx4LTbiiaUw77yM5Y2zeOKJpTbml7bvvIw8YnI+eC0yLTIrNj0x77yM6Kej5b6XeD0tMe+8jOS4jeWQiOmimOaEj++8jOiIjeWOu++8mzxicj7ikaHlvZN4LTLvvJww77yMeC0277ycMO+8jOWNs3jvvJwy5pe277yMPGJyPi14KzIreC02PTHvvIzljbMtND0x77yM5pi+54S25LiN5oiQ56uL77ybPGJyPuKRouW9k3gtMuKJpTDvvIx4LTbvvJww77yM5Y2zMuKJpHjvvJw25pe277yMPGJyPngtMit4LTY9Me+8jOino+W+l3g9NC4177ybPGJyPu+8iDLvvIl8eC0yfC18eC02fD0tMe+8jDxicj7ikaPlvZN4LTLiiaUw77yMeC024omlMO+8jOWNs3jiiaU25pe277yMPGJyPngtMi0yKzY9LTHvvIzop6Plvpd4PS0z77yM5LiN5ZCI6aKY5oSP77yM6IiN5Y6777ybPGJyPuKRpOW9k3gtMu+8nDDvvIx4LTbvvJww77yM5Y2zeO+8nDLml7bvvIw8YnI+LXgrMit4LTY9LTHvvIzljbMtND0tMe+8jOaYvueEtuS4jeaIkOeri++8mzxicj7ikaXlvZN4LTLiiaUw77yMeC0277ycMO+8jOWNszLiiaR477ycNuaXtu+8jDxicj54LTIreC02PS0x77yM6Kej5b6XeD0zLjXvvJs8YnI+57u85LiK5omA6L+w77yM5Y6f5pa556iL55qE6Kej5piv77yaeD00LjXvvIwzLjXvvIzlhbHmnIky5LiqLiA8YnI+5pWF6YCJQS4g
