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.如图，平面直角坐标系中，⊙A的圆心在x轴上，半径为2，直线L为y=
x-4，若⊙A沿x轴向右运动，当⊙A与直线L有一个公共点时，点A移动的最大距离是（ ）
x-4，若⊙A沿x轴向右运动，当⊙A与直线L有一个公共点时，点A移动的最大距离是（ ） A:  |
| B: 5 |
C:  |
D:  |
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2/5
单选题
难度系数：
2.如图，⊙O1的半径为1，正方形ABCD的边长为6，点O2为正方形ABCD的中心，O1O2垂直AB于P点，O1O2=8. 若将⊙O1绕点P按顺时针方向旋转360°，在旋转过程中，⊙O1与正方形ABCD的边只有一个公共点的情况一共出现（ ）
| A: 3次 |
| B: 5次 |
| C: 6次 |
| D: 7次 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOagueaNruKKmU88c3ViPjE8L3N1Yj7nmoTljYrlvoTkuLox77yM5q2j5pa55b2iQUJDROeahOi+uemVv+S4ujbvvIzngrlPPHN1Yj4yPC9zdWI+5Li65q2j5pa55b2iQUJDROeahOS4reW/g++8jE88c3ViPjE8L3N1Yj5PPHN1Yj4yPC9zdWI+5Z6C55u0QULkuo5Q54K577yM6K6+TzxzdWI+MTwvc3ViPk88c3ViPjI8L3N1Yj7kuqTlnIZP5LqOTe+8jOaxguWHulBNPTTvvIzlvpflh7rlnIZPPHN1Yj4xPC9zdWI+5LiO5LulUOS4uuWchuW/g++8jOS7pTTkuLrljYrlvoTnmoTlnIbnm7jlpJbliIfvvIzljbPlj6/lvpfliLDnrZTmoYgu
- 答案：Qg==
6Kej77ya4oi14oqZTzxzdWI+MTwvc3ViPueahOWNiuW+hOS4ujHvvIzmraPmlrnlvaJBQkNE55qE6L656ZW/5Li6Nu+8jOeCuU88c3ViPjI8L3N1Yj7kuLrmraPmlrnlvaJBQkNE55qE5Lit5b+D77yMTzxzdWI+MTwvc3ViPk88c3ViPjI8L3N1Yj7lnoLnm7RBQuS6jlDngrnvvIw8YnI+6K6+TzxzdWI+MTwvc3ViPk88c3ViPjI8L3N1Yj7kuqTlnIZP5LqOTe+8jDxicj7iiLRQTT04LTMtMT0077yMPGJyPuWchk88c3ViPjE8L3N1Yj7kuI7ku6VQ5Li65ZyG5b+D77yM5LulNOS4uuWNiuW+hOeahOWchuebuOWkluWIh++8jDxicj48aW1nIHdpZHRoPTE5MSBoZWlnaHQ9MTQxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQTIvRDIvckJBQ0UxT1gtYkNEVXFHU0FBQWw1dzlkSjVvMDczLnBuZyI+PGJyPuKItOagueaNruWbvuW9ouW+l+WHuuaciTXmrKEuIDxicj7mlYXpgIlCLiA=
本课配套习题挑战模式3/5
单选题
难度系数：
3.已知：平面直角坐标系中，⊙A的圆心在x轴上，半径为1，⊙A沿x轴上向右平移. 如图，当⊙A与y轴相切时，点A的坐标为（ ).
| A: （-1，0） |
| B: （1，0） |
| C: （-1，0）和（1，0） |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS+neaNruebtOe6v+S4juWchuebuOWIh+eahOWFs+ezu++8muWchuW/g+WIsOWIh+eCueeahOi3neemu+S4uuWNiuW+hOmVv++8jOebtOaOpeW+l+WIsOWGmeWHuuW9k+KKmUHkuI556L2055u45YiH5pe277yM54K5QeeahOWdkOaghw==
- 答案：Qw==
6Kej77ya5bey55+l5ZyG55qE5Y2K5b6E5Li6Me+8jDxicj7mlYXlvZPiiplB5LiOeei9tOW3puS+p+ebuOWIh+aXtu+8jOeCuUHnmoTlnZDmoIfkuLrvvIgtMe+8jDDvvInvvIw8YnI+5pWF5b2T4oqZQeS4juWPs+i9tOW3puS+p+ebuOWIh+aXtu+8jOeCuUHnmoTlnZDmoIfkuLrvvIgx77yMMO+8ie+8jDxicj7ljbPlvZPiiplB5LiOeei9tOebuOWIh+aXtu+8jOeCuUHnmoTlnZDmoIfkuLrvvIgtMe+8jDDvvInlkozvvIgx77yMMO+8ieOAgjxicj7mlYXpgIlD44CC
本课配套习题挑战模式4/5
单选题
难度系数：
4.在平面直角坐标系中，如图，直线l：y＝−
x+4，动圆⊙M的半径为2.4，其圆心M在x轴上运动，在运动过程中，当⊙M与此直线l相切时点M的坐标是（ ）。
x+4，动圆⊙M的半径为2.4，其圆心M在x轴上运动，在运动过程中，当⊙M与此直线l相切时点M的坐标是（ ）。 | A: （0，0） |
| B: （0，0）或（6，0） |
| C: （6，0） |
| D: （0，6）或（0，0） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWFiOeUu+WHuuekuuaEj+Wbvu+8jOWcqFJ04pazQUJN5Lit5rGC5Ye6c2lu4oigQkFN77yM54S25ZCO5ZyoUnTilrNBTUPkuK3vvIzliKnnlKjplJDop5LkuInop5Llh73mlbDnmoTlrprkuYnmsYLlh7pBTe+8jOe7p+iAjOWPr+W+l+eCuU3nmoTlnZDmoIcu
- 答案：Qg==
6Kej77ya4pGg5aaC5Zu+5omA56S677yM5q2k5pe24oqZTeS4juatpOebtOe6v2znm7jliIfvvIzliIfngrnkuLpD77yMPGJyPui/nuaOpU1D77yM5YiZTUPiiqVBQu+8jDxicj48aW1nIHdpZHRoPTIxNCBoZWlnaHQ9MTcwIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNjYvQjAvckJBQ0ZGT1gtYmFTOUhRUUFBQWxGVjY0NzZJMjcxLnBuZyIgYWxpZ249bGVmdCBoc3BhY2U9MTI+5ZyoUnTilrNBQk3kuK3vvIxzaW7iiKBCQU09PGltZyB3aWR0aD0xMyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BMi9EMi9yQkFDRTFPWC1iYmhVa1FXQUFBQmNSSDVrbmc0NzYucG5nIj49PGltZyB3aWR0aD01IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EyL0QyL3JCQUNFMU9YLWJhalFnYXFBQUFCTUNvWGVQUTk3MC5wbmciPu+8jDxicj7lnKhSdOKWs0FNQ+S4re+8jOKItXNpbuKIoE1BQz08aW1nIHdpZHRoPTE1IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzY2L0IwL3JCQUNGRk9YLWJhaWNQZHJBQUFCcDBCZ0FvdzgxMi5wbmciPu+8jDxicj7iiLRBTT08aW1nIHdpZHRoPTQ1IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzY2L0IwL3JCQUNGRk9YLWJiejliUGlBQUFDVldSNjVUdzk2NS5wbmciPj08aW1nIHdpZHRoPTE1IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EyL0QyL3JCQUNFMU9YLWJhejJWdXNBQUFCZW11MGphVTYyMi5wbmciPj0z77yMPGJyPuKItOeCuU3nmoTlnZDmoIfkuLrvvIgw77yMMO+8iS4gPGJyPuKRoeatpOaXtuKKmU0n5LiO5q2k55u057q/bOebuOWIh++8jOWIh+eCueS4ukMn77yMPGJyPui/nuaOpU0nQyfvvIzliJlNJ0Mn4oqlQULvvIw8YnI+5piT5b6X4pazQU1D4omM4pazQU0nQyfvvIw8YnI+4oi0QU0nPUFNPTPvvIw8YnI+4oi054K5TSfnmoTlnZDmoIfkuLrvvIg277yMMO+8ie+8mzxicj7nu7zkuIrlj6/lvpfvvJrlvZPiiplN5LiO5q2k55u057q/bOebuOWIh+aXtueCuU3nmoTlnZDmoIfmmK/vvJrvvIgw77yMMO+8ieaIlu+8iDbvvIww77yJLiA8YnI+5pWF6YCJQi4g
本课配套习题挑战模式5/5
单选题
难度系数：
5.等腰直角△ABC和⊙O如图放置，已知AB=BC=1，∠ABC=90°，⊙O的半径为1，圆心O与直线AB的距离为5. 现两个图形同时向右移动，△ABC的速度为每秒2个单位，⊙O的速度为每秒1个单位，同时△ABC的边长AB、BC又以每秒0.5个单位沿BA、BC方向增大，当△ABC的边与圆第一次相切时，点B运动了（ ）距离。
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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
