中学生网络课堂本课配套习题挑战模式1/4
单选题
难度系数：
1.
的值为（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5pys6aKY6ICD5p+l5Lik6KeS5beu55qE5q2j5bym5YWs5byP44CCPC9wPg==
- 提示2：PHA+5Y6f5byPPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzQ3LzE1L3JCQUNKbFRaVkpDeEVxRHVBQUFIRVIwdzRrdzAwMy5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNDcvMTUvckJBQ0psVFpWSkN4RXFEdUFBQUhFUjB3NGt3MDAzLnBuZyIgaGVpZ2h0PSIyMSIgd2lkdGg9IjQyMSI+PGJyPjwvcD4=
- 答案：Qg==
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
本课配套习题挑战模式2/4
单选题
难度系数：
2.
sin 163°sin 223°＋sin 253°sin 313°等于（ ）
| A:
|
| B:
|
| C: － |
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5pys6aKY6ICD5p+l5Lik6KeS5beu55qE5L2Z5bym5YWs5byP6YCG55SoPC9wPg==
- 提示2：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
- 答案：Qg==
PHA+6Kej77ya5Zug5Li6c2luIDE2M8Kwc2luMjIzwrDvvItzaW4gMjUzwrBzaW4zMTPCsDxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83Qi9DOS9yQkFDRTFUWlZKYnhXdzhwQUFBSVViajQtOGcyNzMucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzdCL0M5L3JCQUNFMVRaVkpieFd3OHBBQUFJVWJqNC04ZzI3My5wbmciIGhlaWdodD0iNDEiIHdpZHRoPSI0NDMiPi48YnI+PC9wPg==
本课配套习题挑战模式3/4
单选题
难度系数：
3.
的值是（ ）
| A:
|
| B:
|
| C:
|
| D: 0 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5pys6aKY6ICD5p+l5Lik6KeS5ZKM55qE5L2Z5bym5YWs5byP5Y+K6K+x5a+85YWs5byPPGJyPuS4pOinkuWSjOeahOS9meW8puWFrOW8j+S4ujxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9COC81Ny9yQkFDRkZUWlZKclRNX1JVQUFBRC1EbU1zV0U4NTUucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0I4LzU3L3JCQUNGRlRaVkpyVE1fUlVBQUFELURtTXNXRTg1NS5wbmciIGhlaWdodD0iMjMiIHdpZHRoPSIyMDQiPjwvcD4=
- 提示2：PHA+PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzQ3LzU4L3JCQUNKMVRaVkpxQXhTbHpBQUFKb1ZYcEFwZzIzNS5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNDcvNTgvckJBQ0oxVFpWSnFBeFNsekFBQUpvVlhwQXBnMjM1LnBuZyIgaGVpZ2h0PSIzMiIgd2lkdGg9IjUxNiI+PC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式4/4
单选题
难度系数：
4.
已知
，则
的值等于（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6L+Z6YeM6ICD5p+l5LqG6YWN6KeS55qE5oqA5benPGJyPjwvcD4=
- 提示2：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
- 提示3：PHA+5LuO6ICMPGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0I4LzU3L3JCQUNGRlRaVko2RGlTaGVBQUFGU0FUZkRuazAwMC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQjgvNTcvckJBQ0ZGVFpWSjZEaVNoZUFBQUZTQVRmRG5rMDAwLnBuZyIgaGVpZ2h0PSI0NSIgd2lkdGg9IjIyOSI+PC9wPg==
- 答案：Qg==
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
