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.函数
的定义域为（）
的定义域为（） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.函数
的定义域是（ ）
的定义域是（ ） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：Qw==
6Kej5p6Q77yaeOW6lOa7oei2szxpbWcgd2lkdGg9MTg3IGhlaWdodD00OCBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzhELzU0L3JCQUNFMVBaOFVTeHJ4UENBQUFEOUhsMkhOUTY2Ni5wbmciPuaJgOS7peWHveaVsOeahOWumuS5ieWfn+S4ujxpbWcgd2lkdGg9MTIwIGhlaWdodD0yMyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzRGL0RFL3JCQUNGRlBaOFVUaVdPUjFBQUFDWjA0MnBhQTk4OS5wbmciPi4=
本课配套习题挑战模式3/5
单选题
难度系数：
3.若函数
的定义域是
，则函数
的定义域是（）
的定义域是，则函数的定义域是（） A:  |
| B: |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：DQo8aW1nIHdpZHRoPTYwIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzhELzU2L3JCQUNFMVBaOFhmQ1J1MThBQUFCMXpvOWsxWTgxOS5wbmciPueahOWumuS5ieWfn+aMh+eahOaYrzxpbWcgd2lkdGg9NDAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNEYvREYvckJBQ0ZGUFo4WGVpQTdZZ0FBQUJkRGZ0Y1FrMDcwLnBuZyI+5LiteOeahOWPluWAvOiMg+WbtA==
- 提示2：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
- 答案：Qw==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.已知函数
的定义域为
，则
的定义域为（）
的定义域为，则的定义域为（） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：DQo8aW1nIHdpZHRoPTYwIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzhELzU2L3JCQUNFMVBaOFlUZ0JrdldBQUFCNEg0UmJQNDM3Mi5wbmciPueahOWumuS5ieWfn+aMh+eahOaYrzxpbWcgd2lkdGg9NDAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNEYvRTAvckJBQ0ZGUFo4WVN5a25DYkFBQUJmbS0ydlpRNjA3LnBuZyI+5LitPGltZyB3aWR0aD04IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzRGL0UwL3JCQUNGRlBaOFlTUjZNTTJBQUFCRWthREh3ZzI0NS5wbmciPueahOWPluWAvOiMg+WbtA==
- 提示2：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
- 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.已知函数
定义域是
，则
的定义域是（ ）
定义域是，则的定义域是（ ） A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 提示2：IOWboOS4uuWHveaVsDxpbWcgd2lkdGg9ODQgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNEYvRTAvckJBQ0ZGUFo4WnpSZEFsU0FBQUNIQjdzcmtNNTc4LnBuZyI+5a6a5LmJ5Z+f5pivPGltZyB3aWR0aD01NiBoZWlnaHQ9MjMgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC84RC81Ny9yQkFDRTFQWjhaM0NrMGhfQUFBQmZGX2tlVmcyNTMucG5nIj48aW1nIHdpZHRoPTI4MCBoZWlnaHQ9NDEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC84RC81Ny9yQkFDRTFQWjhaN1NKaURKQUFBRWlpdWxyS3c4ODMucG5nIj4=
- 答案：QQ==
6Kej5p6Q77ya5Zug5Li65Ye95pWwPGltZyB3aWR0aD04NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC80Ri9FMC9yQkFDRkZQWjhaelJkQWxTQUFBQ0hCN3Nya001NzgucG5nIj7lrprkuYnln5/mmK88aW1nIHdpZHRoPTU2IGhlaWdodD0yMyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzhELzU3L3JCQUNFMVBaOFozQ2swaF9BQUFCZkZfa2VWZzI1My5wbmciPu+8jOWImTxpbWcgd2lkdGg9MjgwIGhlaWdodD00MSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzhELzU3L3JCQUNFMVBaOFo3U0ppREpBQUFFaWl1bHJLdzg4My5wbmciPuaVhTxpbWcgd2lkdGg9OTIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNEYvRTAvckJBQ0ZGUFo4WjJpZkxudUFBQUNWaWNRRjRnNTg5LnBuZyI+55qE5a6a5LmJ5Z+f5pivPGltZyB3aWR0aD01NSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC80Ri9FMC9yQkFDRkZQWjhaX0F0RVlVQUFBQmJDdXZXYlEyMzYucG5nIj7pgIlBLg==
