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，已知直线a∥b∥c，直线m、n与直线a、b、c分别交于点A、C、E、B、D、F，AC=4，CE=6，BD=3，则BF=（ ）
| A: 7 |
| B: 7.5 |
| C: 8 |
| D: 8.5 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+55Sx55u057q/YeKIpWLiiKVj77yM5qC55o2u5bmz6KGM57q/5YiG57q/5q615oiQ5q+U5L6L5a6a55CG77yM5Y2z5Y+v5b6XPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzBDL0ZEL3JCQUNGRlBJN2xpQ0l4RlBBQUFDTTBocmlVMDA3Mi5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMEMvRkQvckJBQ0ZGUEk3bGlDSXhGUEFBQUNNMGhyaVUwMDcyLnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjYxIj48L3A+
- 提示2：PHA+5Y+I55SxQUM9NO+8jENFPTbvvIxCRD0z77yM5Y2z5Y+v5rGC5b6XREbnmoTplb/vvIzliJnlj6/msYLlvpfnrZTmoYguPC9wPg==
- 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.
如图所示：△ABC中，DE∥BC，AD=5，BD=10，AE=3. 则CE的值为（ ）
| A: 9 |
| B: 6 |
| C: 3 |
| D: 4 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+55SxREXiiKVCQ++8jOeUqOW5s+ihjOe6v+WIhue6v+auteaIkOavlOS+i+WumueQhuWNs+WPr+W+l+WIsDxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC80QS8xMS9yQkFDRTFQSTdsdmg5OWJ4QUFBQ0dHV09tMFUyNTIucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzRBLzExL3JCQUNFMVBJN2x2aDk5YnhBQUFDR0dXT20wVTI1Mi5wbmciIGhlaWdodD0iNDIiIHdpZHRoPSI2MSI+PC9wPg==
- 提示2：PHA+5Y+I55SxQUQ9Ne+8jEJEPTEw77yMQUU9M++8jOS7o+WFpeWNs+WPr+axguW+l+etlOahiC48L3A+
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.
如图，直线l1∥l2∥l3，另两条直线分别交l1、l2、l3于点A、B、C及点D、E、F，且AB=3，DE=4，EF=2，则（ ）
| A: BC：DE=1：2 |
| B: BC：DE=2：3 |
| C: BC•DE=8 |
| D: BC•DE=6 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5piT55+l55u057q/bDxzdWI+MTwvc3ViPuKIpWw8c3ViPjI8L3N1Yj7iiKVsPHN1Yj4zPC9zdWI+77yM5qC55o2u5bmz6KGM57q/5YiG57q/5q615oiQ5q+U5L6L5a6a55CG5a+55ZCE6YCJ6aG55YiG5p6Q5Y2z5Y+vLjwvcD4=
- 答案：RA==
PHA+6Kej77ya4oi1bDxzdWI+MTwvc3ViPuKIpWw8c3ViPjI8L3N1Yj7iiKVsPHN1Yj4zPC9zdWI+4oi0PGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzBDL0ZEL3JCQUNGRlBJN2wteWYtTWxBQUFDTHpXLTdGdzk0MC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMEMvRkQvckJBQ0ZGUEk3bC15Zi1NbEFBQUNMelctN0Z3OTQwLnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjYxIj48YnI+4oi1QUI9M++8jERFPTTvvIxFRj0yPGJyPuKItEJD4oCiREU9QULigKJFRj02LiDmlYXpgIlELjwvcD4=
本课配套习题挑战模式4/5
单选题
难度系数：
4.
如图，直线AB∥CD∥EF，若AC=3，CE=4，则
的值是（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5bey55+l55u057q/QULiiKVDROKIpUVG77yM5qC55o2u5bmz6KGM57q/5YiG57q/5q615oiQ5q+U5L6L5a6a55CG5YiX5Ye65q+U5L6L5byP5Y2z5Y+v5rGC6KejLjwvcD4=
- 答案：Qw==
PHA+6Kej77ya4oi1QULiiKVDROKIpUVGPGJyPuKItDxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC80QS8xMi9yQkFDRTFQSTdtS0FDR0ZPQUFBQ0pIdWZkSmMxMjIucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzRBLzEyL3JCQUNFMVBJN21LQUNHRk9BQUFDSkh1ZmRKYzEyMi5wbmciIGhlaWdodD0iNDIiIHdpZHRoPSI2MSI+PGJyPuKItUFDPTPvvIxDRT00PGJyPuKItDxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC80QS8xMi9yQkFDRTFQSTdtS0NISFdWQUFBQjRuc3k1SUkwNjcucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzRBLzEyL3JCQUNFMVBJN21LQ0hIV1ZBQUFCNG5zeTVJSTA2Ny5wbmciIGhlaWdodD0iNDIiIHdpZHRoPSI1MSI+PGJyPuaVhemAiUMuPC9wPg==
本课配套习题挑战模式5/5
单选题
难度系数：
5.
如图，在△ABC中，AD是BC边上的中线，E在AC边上，且AE：EC=1：2，BE交AD于P，则AP：PD等于（ ）
| A: 1：1 |
| B: 1：2 |
| C: 2：3 |
| D: 4：3 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6aaW5YWI6L+H54K5ROS9nERG4oilQkXvvIznlLFBROaYr0JD6L655LiK55qE5Lit57q/77yM5qC55o2u5bmz6KGM57q/5YiG57q/5q615oiQ5q+U5L6L5a6a55CG77yM5Y2z5Y+v5b6XRUY9RkM8L3A+
- 提示2：PHA+55SxQUXvvJpFQz0x77yaMu+8jOWNs+WPr+W+l0FFPUVGPUZD77yM54S25ZCO5qC55o2u5bmz6KGM57q/5YiG57q/5q615oiQ5q+U5L6L5a6a55CG77yM5Y2z5Y+v5rGC5b6XQVDvvJpQROeahOWAvC48L3A+
- 答案：QQ==
PHA+6Kej77ya6L+H54K5ROS9nERG4oilQkXvvIzkuqRBQ+S6jkbvvIw8YnI+4oi0QUTmmK9CQ+i+ueS4iueahOS4ree6v++8jDxicj7ljbNCRD1DRO+8jDxicj7iiLRFRj1DRu+8jDxicj7iiLVBRe+8mkVDPTHvvJoy77yMPGJyPuKItEFFPUVGPUZD77yMPGJyPuKItEFF77yaRUY9Me+8mjHvvIw8YnI+4oi0QVDvvJpQRD1BRe+8mkVGPTHvvJoxLjxicj7mlYXpgIlBLjwvcD4=
