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.计算
的结果是（ ）
的结果是（ ） | A: 4b |
B: 4 |
| C: 2b |
| D: 2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IDxpbWcgd2lkdGg9MTEwIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0E0L0JGL3JCQUNFMU9aS0VHQkJXY3NBQUFETHczekVTdzA2Ni5wbmciPg==
- 答案：RA==
6Kej77yaPGltZyB3aWR0aD0xMTAgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQTQvQkYvckJBQ0UxT1pLRUdCQldjc0FBQURMdzN6RVN3MDY2LnBuZyI+PGJyPuKItOmAiUQ8YnI+
本课配套习题挑战模式2/5
单选题
难度系数：
2.
已知a=√2，b=√10 ，用含a，b的代数式表示
，这个代数式是（ ）
| A: a+2b |
| B: a2b |
| C: 4a |
| D: ab2 |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.已知m=(−
)，则有（ ）
)，则有（ ）| A: 5＜m＜6 |
| B: 4＜m＜5 |
| C: -5＜m＜-4 |
| D: -6＜m＜-5 |
一次做对，真牛！
+5奖励规则>
- 提示1：IG09KCYjODcyMjs8aW1nIHdpZHRoPTk0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzY4Lzk3L3JCQUNGRk9aS0RuQi1sOUVBQUFDbXdseWVDZzg3Ni5wbmciPik9MjxpbWcgd2lkdGg9MTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNjgvOTcvckJBQ0ZGT1pLRG53Zk1LZ0FBQUJkMXc5TXg0Nzk5LnBuZyI+
- 提示2：IDXvvJwyPGltZyB3aWR0aD00NCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BNC9CRi9yQkFDRTFPWktEblFMSlQtQUFBQnlram9YVWM4NzIucG5nIj4=
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.化简a
的结果是（ ）
的结果是（ ） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOKItTxpbWcgd2lkdGg9MzAgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNjgvOTgvckJBQ0ZGT1pLRDN5eDRmekFBQUJzM1FUUVNrNDY5LnBuZyI+77yM4oi0PGltZyB3aWR0aD00MyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC82OC85OC9yQkFDRkZPWktEM0FqZ2t5QUFBQmtGZDFPTlE1MzgucG5nIj7vvIziiLRh77ycMA==
- 提示2：IGE8aW1nIHdpZHRoPTU0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0E0L0JGL3JCQUNFMU9aS0QzQWNaOUlBQUFDRUF6aWRmODAzMC5wbmciPg==
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.化简
| A: -1 |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：RA==
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
