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.
设a＝
(sin56°－cos56°)， b＝cos50°·cos128°＋cos40°·cos38°，c＝
(cos80°－2cos250°＋1)，则a，b，c的大小关系是（ ）
| A: a>b>c |
| B: b>a>c |
| C: c>a>b |
| D: a>c>b |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5YiG5Yir5YyW566APC9wPg==
- 提示2：PHA+5YiG5Yir55So5L2Z5bym6KGo56S6Ye+8jGLvvIxjPC9wPg==
- 提示3：PHA+5L2Z5bym5Ye95pWw55qE5Y2V6LCD5oCnPC9wPg==
- 提示4：PHA+55S75Zu+77yM5YCf5Yqp5Zu+6LGh5oiW6ICF5Y2V5L2N5ZyG5Yik5patPC9wPg==
- 答案：Qg==
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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
的最大值是（ ）
| A: 7 |
| B:
|
| C: 4 |
| D: 8 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6KeC5a+f5Lik5Liq6KeS55qE54m554K577yM5beu5Li6NjDCsDwvcD4=
- 提示2：PHA+5Yip55So5o+Q5pac5YWs5byP5YyW566APC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.
为了得到函数
的图像,可以将函数
的图像（ ）
| A: 向右平移 |
| B: 向右平移 |
| C: 向左平移 |
| D: 向左平移 |
个单位长度
个单位长度
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5LqM5YCN6KeS5YWs5byPPC9wPg==
- 提示2：PHA+5o+Q5pac5YWs5byPPC9wPg==
- 提示3：PHA+5bem5Yqg5Y+z5YePPC9wPg==
- 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.
如果若干个函数的图象经过平移后能够重合，则称这些函数为“同簇函数”．给出下列函数：
①
；
②
；
③
；
④
．
其中“同簇函数”的是（ ）
| A: ①② |
| B: ①④ |
| C: ②③ |
| D: ③④ |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6K+75oeC6aKY5oSPPC9wPg==
- 提示2：PHA+5Zu+6LGh5b2i54q255u45ZCMPC9wPg==
- 提示3：PHA+57u85ZCI6L+Q55So5LqM5YCN6KeS5YWs5byP44CB5o+Q5pac5YWs5byP5YyW566APC9wPg==
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.
已知向量
，若函数
为偶函数，则
的值可能是（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5ZCR6YeP55qE5pWw6YeP56ev6L+Q566X5rOV5YiZ77yMPC9wPg==
- 提示2：PHA+5Yip55So5o+Q5pac5YWs5byP77yM5YyW5Li65ZCM6KeS5LiJ6KeS5Ye95pWwPC9wPg==
- 提示3：PHA+5YG25Ye95pWw55qE5oCn6LSoPC9wPg==
- 提示4：PHA+5YCf5Yqp5Zu+5YOP5YiG5p6QPC9wPg==
- 答案：QQ==
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
