本课配套习题挑战模式1/5
单选题
难度系数:
1.一个笼中装有x只鸡,y只兔子,它们共有8个头,22只脚,则列出二元一次方程组是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5LiA5Y+q6bih5Lik5Y+q6ISa77yb5LiA5Y+q5YWU5a2Q5Zub5Y+q6ISa
- 答案:Qg==
5YWI5YaZ5YWz57O75byP77ya4pGg6bih5pWw6YePK+WFlOaVsOmHjz0477yb4pGh6bih5pWw6YePw5cyK+WFlOaVsOmHj8OXND0yMi7iiLQ8aW1nIHdpZHRoPTEyNCBoZWlnaHQ9NTYgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9GQS9yQkFDSmxUSmtxNkRDazlMQUFBRVhUY0R2TnM1MjMucG5nIj4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.甲、乙两条绳共长17米,若甲绳减去,乙绳增加1米,则两条绳长相等,求甲、乙两条绳各多长.若设甲绳长x米,乙绳长y米,则得方程组()
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP77ya55Sy57uz5YeP5Y67PGltZyB3aWR0aD0xNCBoZWlnaHQ9Mzggc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRi8zQy9yQkFDSjFUSmtySGdRZ3M1QUFBQkhRelZKOXM4NTYucG5nIj7jgII8aW1nIHdpZHRoPTggaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvQUUvckJBQ0ZGVEprckx4cjY1WkFBQUJDV3JtZEdZODIzLnBuZyI+5rKh5pyJ5Y2V5L2N77yM5Luj6KGo5LuA5LmI
- 答案:Qw==
5YWI5YaZ6YC76L6R5YWz57O75byP77ya4pGg55Sy57uz6ZW/K+S5mee7s+mVvz0xN++8m+KRoeeUsue7s+mVv+KAlDxpbWcgd2lkdGg9MTQgaGVpZ2h0PTM4IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0YvM0MvckJBQ0oxVEprckhnUWdzNUFBQUJIUXpWSjlzODU2LnBuZyI+55Sy57uz6ZW/PeS5mee7s+mVvysx
本课配套习题挑战模式3/5
单选题
难度系数:
3.超市中有A、B两种饮料,小洋买了5瓶A种饮料、4瓶B种饮料一共花了l8元,其中B种饮料比A种饮料贵0.3元,若设A种饮料单价为x元,B种饮料单价为y元,可列方程组为()
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5YWI5YaZ6YC76L6R5YWz57O75byP
- 答案:QQ==
4pGgQemlruaWmeWNleS7t8OXNStC6aWu5paZ5Y2V5Lu3w5c0PTE477yb4pGhQumlruaWmeWNleS7t+KAlEHppa7mlpnljZXku7c9MC4z77yM55Sx4pGg4pGh5b6X5pa556iL57uE77yMPGltZyB3aWR0aD0xMTMgaGVpZ2h0PTU0IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRkEvckJBQ0psVEprclRnMWZSSkFBQUVQNWJyX2o4MjI0LnBuZyI+44CC5pWF6YCJQQ==
本课配套习题挑战模式4/5
单选题
难度系数:
4.甲、乙两个汽车制造厂,按计划每月共生产汽车460辆,由于两厂都引进了新的技术设备,本月甲厂完成计划的110%,乙厂完成计划的115%,两厂共生产汽车519辆,本月甲厂超额生产汽车()辆
A: 20 |
B: 39 |
C: 10 |
D: 40 |
一次做对,真牛!
+5奖励规则>
- 提示1:5YiX5pa556iL57uE6Kej5bqU55So6aKY
- 答案:QQ==
6Kej77ya6K6+55Sy6K6h5YiS5q+P5pyI55Sf5LqneOi+hu+8jOS5meiuoeWIkuavj+aciOeUn+S6p3novobjgILnlLHpopjmhI/vvIzlvpc8aW1nIHdpZHRoPTE1OCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRi9yQkFDRkZUSmt0WHk1ZlI0QUFBRUZUcEY1RjQ5MzMucG5nIj4sPGJyPuino+W+l++8jDxpbWcgd2lkdGg9NTggaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRkEvckJBQ0psVEprdFhobGhqM0FBQUNqNXEtQmk4MDI0LnBuZyI+LOKItCgxMTAlLTEpeD0yMC7mlYXpgIlB
本课配套习题挑战模式5/5
单选题
难度系数:
5.有一批苹果需要装箱,若每箱装25千克,则有40千克装不下;若每箱装30千克,则除剩余20个空箱外其余箱子都装满,这批苹果共有()
A: 2760千克 |
B: 3240千克 |
C: 112千克 |
D: 128千克 |
一次做对,真牛!
+5奖励规则>
- 提示1:5YiX5pa556iL57uE6Kej5bqU55So6aKY
- 提示2:5YWI5oCd6ICD5Lik5Liq5pyq55+l5pWw5YiG5Yir5Luj6KGo5LuA5LmI6YeP5pyA5a655piT5YiX5pa556iL57uE
- 答案:Qg==
6Kej77ya6K6+5LiA5YWx5pyJeOeuse+8jOawtOaenOS4gOWFsXnljYPlhYvjgII8aW1nIHdpZHRoPTk5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0FBL0FGL3JCQUNGRlRKa3RuakVVQTlBQUFEZUNKSE5odzA1Ni5wbmciPizop6Plvpc8aW1nIHdpZHRoPTYzIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0ZBL3JCQUNKbFRKa3RuUndvcmRBQUFDdzVqOXJUczY1My5wbmciPizmlYXpgIlC