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.下列计算正确的是（）
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5LqM5qyh5qC55byP55qE5LmY5rOV5rOV5YiZ77yaYTxpbWcgd2lkdGg9NTIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUEvckJBQ0psVEltYkxEa3FTT0FBQUNCYXpJY2owNTg3LnBuZyI+PWFiPGltZyB3aWR0aD0yNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FOS9yQkFDSjFUSW1iTHkzbkt5QUFBQnMxczdPV0k1MTUucG5nIj4=
- 答案：RA==
6Kej562U77yaMjxpbWcgd2lkdGg9NTggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjgvckJBQ0ZGVEltYktnazBpR0FBQUIyeVRJSFFvMDQyLnBuZyI+PTxpbWcgd2lkdGg9NzMgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUEvckJBQ0psVEltYkx5RE5RTkFBQUNCM1QzSjJzNzc2LnBuZyI+PTxpbWcgd2lkdGg9MTYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTkvckJBQ0oxVEltYkx6WWlEbkFBQUJOZnNMZGg0ODUzLnBuZyI+PGJyPuaVhemAiUQ=
本课配套习题挑战模式2/5
单选题
难度系数：
2.使等式
成立的条件是（）
成立的条件是（） | A: a≥-2 |
| B: a≤2 |
| C: -2＜a＜2 |
| D: -2≤a≤2 |
一次做对，真牛！
+5奖励规则>
- 提示1：5LqM5qyh5qC55byP55qE6Z2e6LSf5oCnPGltZyB3aWR0aD0yNCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9BQS9yQkFDSmxUSW1iN2hiZFhxQUFBQmxpaGFkcTQyNjMucG5nIj49PGltZyB3aWR0aD00NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS8yOC9yQkFDRkZUSW1ibndINWhZQUFBQjRTOUpRVGcxNjYucG5nIj4oYTxpbWcgd2lkdGg9NjEgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUEvckJBQ0psVEltYjdobTdkeEFBQUJuNWl2cUhFNzgwLnBuZyI+KQ==
- 答案：RA==
6Kej562U77ya4oi1PGltZyB3aWR0aD0xODIgaGVpZ2h0PTI4IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjgvckJBQ0ZGVEltYjZTcERZS0FBQURrVUNGWlcwMTIxLnBuZyI+PGJyPuKItGErMjxpbWcgd2lkdGg9ODIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTkvckJBQ0oxVEltYjdEbkpEV0FBQUIyQ1NQMDg0OTkwLnBuZyI+PGJyPuKItC0y4omkYeKJpDIgPGJyPuaVhemAiUQ=
本课配套习题挑战模式3/5
单选题
难度系数：
3.若
，
，则xy的值为（）
，，则xy的值为（） A: |
B:  |
| C: a+b |
| D: a-b |
一次做对，真牛！
+5奖励规则>
- 提示1：PGltZyB3aWR0aD0xMTIgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTkvckJBQ0oxVEltY0xUVXhjQ0FBQUM2V2RneG1NMjA2LnBuZyI+5LqM5qyh5qC55byP55qE6Z2e6LSf5oCn
- 提示2：5bmz5pa55beu5YWs5byP
- 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.计算
的结果在（）
的结果在（） | A: 1到2之间 |
| B: 2到3之间 |
| C: 3到4之间 |
| D: 4到5之间 |
一次做对，真牛！
+5奖励规则>
- 提示1：5LqM5qyh5qC55byP55qE5LmY5rOV5rOV5YiZ77yaPGltZyB3aWR0aD00NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS8yOC9yQkFDRkZUSW1ibndINWhZQUFBQjRTOUpRVGcxNjYucG5nIj49PGltZyB3aWR0aD0yNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FOS9yQkFDSjFUSW1iTHkzbkt5QUFBQnMxczdPV0k1MTUucG5nIj4=
- 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.若把
根号外的因式移入根号内得（）
根号外的因式移入根号内得（） A: |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55Y+35aSW55qE5pWw5YaF56e75pe277yMYTxpbWcgd2lkdGg9MTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjgvckJBQ0ZGVEltYzJSR0lMRUFBQUJkMmZ6cUM4NjU4LnBuZyI+LOW9k2HkuLrmraPmlbDml7ZhPGltZyB3aWR0aD02NyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BQS9yQkFDSmxUSW1jMndUUEJzQUFBQ0hLUUJmVlU0OTQucG5nIj7vvIzlvZNh5Li66LSf5pWw5pe277yMYTxpbWcgd2lkdGg9NzcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjgvckJBQ0ZGVEltYzNEUHppcUFBQUNJQVVUUDJRMzI3LnBuZyI+
- 答案：Qw==
6Kej562U77yaPGltZyB3aWR0aD0zNyBoZWlnaHQ9MjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8yOC9yQkFDRkZUSW1jM1JfOVV6QUFBQmZRMXNXcGs2MzEucG5nIj4gPS08aW1nIHdpZHRoPTI1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0FBL3JCQUNKbFRJbWMzU0Y2NW9BQUFCcG9Ibjd5QTM2NS5wbmciPjxicj7mlYXpgIlD
