1/5单选题
难度：
1.如图，∠1=∠2，则下列结论一定成立的是（ ）
| A | AB∥CD |
| B | AD∥BC |
| C | ∠B=∠D |
| D | ∠3=∠4 |
- 提示1：
- IOWboOS4uuKIoDHkuI7iiKAy5pivQUTvvIxCQ+iiq0FD5omA5oiq5p6E5oiQ55qE5YaF6ZSZ6KeS77yM5omA5Lul57uT5ZCI5bey55+l77yM55Sx5YaF6ZSZ6KeS55u4562J77yM5Lik55u057q/5bmz6KGM5rGC6Kej
正确答案：Qg==
6Kej77ya4oi14oigMT3iiKAy77yMPGJyPuKItEFE4oilQkPvvIjlhoXplJnop5Lnm7jnrYnvvIzkuKTnm7Tnur/lubPooYzvvIkuIDxicj7mlYXpgIlCLiA=
2/5单选题
难度：
2.
如图，在△ABC中，D、E、F分别在AB、BC、AC上，且EF∥AB，要使DF∥BC，只需满足下列条件中的（ ）
| A | ∠1=∠2 |
| B | ∠2=∠AFD |
| C | ∠2=∠FAD |
| D | ∠1=∠DFE |
- 提示1：
- PHA+6KaB5L2/REbiiKVCQ++8jOWPr+WbtOe7leaIque6v+aJvuWQjOS9jeinkuOAgeWGhemUmeinkuWSjOWQjOaXgeWGheinku+8jOmAiemhueS4reKIoDE94oigREZF77yM5qC55o2u5bey55+l5p2h5Lu25Y+v5b6X4oigMT3iiKAy77yM5omA5Lul4oigREZFPeKIoDLvvIzmu6HotrPlhbPkuo5ERu+8jEJD55qE5YaF6ZSZ6KeS55u4562J77yM5YiZREbiiKVCQzwvcD4=
正确答案：RA==
PHA+6Kej77ya4oi1RUbiiKVBQu+8jDxicj7iiLTiiKAxPeKIoDLvvIjkuKTnm7Tnur/lubPooYzvvIzlkIzkvY3op5Lnm7jnrYnvvIkuPGJyPuKIteKIoDE94oigREZF77yMPGJyPuKItOKIoDI94oigREZF77yI562J6YeP5Luj5o2i77yJ77yMPGJyPuKItERG4oilQkPvvIjlhoXplJnop5Lnm7jnrYnvvIzkuKTnm7Tnur/lubPooYzvvIkuPGJyPuaJgOS7peWPqumcgOa7oei2s+S4i+WIl+adoeS7tuS4reeahOKIoDE94oigREZFLjxicj7mlYXpgIlELjwvcD4=
3/5单选题
难度：
3.如图，下列条件不能判断直线a∥b的是（ ）
| A | ∠1=∠4 |
| B | ∠3=∠5 |
| C | ∠2+∠5=180° |
| D | ∠2+∠4=180° |
- 提示1：
- IOimgeWIpOaWreebtOe6v2HiiKVi77yM5YiZ6KaB5om+5Ye65a6D5Lus55qE5ZCM5L2N6KeS44CB5YaF6ZSZ6KeS55u4562J77yM5ZCM5peB5YaF6KeS5LqS6KGl
正确答案：RA==
6Kej77yaQeOAgeiDveWIpOaWre+8jOKIoDE94oigNO+8jGHiiKVi77yM5ruh6Laz5YaF6ZSZ6KeS55u4562J77yM5Lik55u057q/5bmz6KGMLiA8YnI+QuOAgeiDveWIpOaWre+8jOKIoDM94oigNe+8jGHiiKVi77yM5ruh6Laz5ZCM5L2N6KeS55u4562J77yM5Lik55u057q/5bmz6KGMLiA8YnI+Q+OAgeiDveWIpOaWre+8jOKIoDI94oigNe+8jGHiiKVi77yM5ruh6Laz5ZCM5peB5YaF6KeS5LqS6KGl77yM5Lik55u057q/5bmz6KGMLiA8YnI+ROOAgeS4jeiDvS4gPGJyPuaVhemAiUQuIA==
4/5单选题
难度：
4.如图，下列各组条件中，不能得到c∥d的是（ ）
| A | ∠2=∠3 |
| B | ∠1+∠2=180° |
| C | ∠2+∠4=180° |
| D | ∠2=∠5 |
- 提示1：
- IOW5s+ihjOe6v+eahOWIpOWumuWumueQhuacieKRoOWQjOS9jeinkuebuOetie+8jOS4pOebtOe6v+W5s+ihjO+8jOKRoeWGhemUmeinkuebuOetie+8jOS4pOebtOe6v+W5s+ihjO+8jOKRouWQjOaXgeWGheinkuS6kuihpe+8jOS4pOebtOe6v+W5s+ihjO+8jOagueaNruS7peS4iuWGheWuueWIpOaWreWNs+WPrw==
正确答案：Qg==
6Kej77yaQeOAgeKIteKIoDI94oigM++8jDxicj7iiLRj4oilZO+8jOato+ehru+8jOaVheacrOmAiemhuemUmeivr++8mzxicj5C44CB55Sx4oigMSviiKAyPTE4MMKw6IO95o6o5Ye6YeKIpWLvvIzkuI3og73mjqjlh7pj4oilZO+8jOmUmeivr++8jOaVheacrOmAiemhueato+ehru+8mzxicj5D44CB4oi14oigMiviiKA0PTE4MMKw77yMPGJyPuKItGPiiKVk77yM5q2j56Gu77yM5pWF5pys6YCJ6aG56ZSZ6K+v77ybPGJyPkTjgIHiiLXiiKAyPeKIoDXvvIw8YnI+4oi0Y+KIpWTvvIzmraPnoa7vvIzmlYXmnKzpgInpobnplJnor6/vvJs8YnI+5pWF6YCJQi4g
5/5单选题
难度：
5.如图，给出下列条件：①∠3=∠4；②∠1=∠2；③EF∥CD，且∠D=∠4；④∠3+∠5=180°. 其中，能推出AD∥BC的条件为（ ）
| A | ①②③ |
| B | ①②④ |
| C | ①③④ |
| D | ②③④ |
- 提示1：
- IOagueaNruW5s+ihjOe6v+eahOWIpOWumuaWueazlee7k+WQiOmimOebruaJgOe7meeahOadoeS7tui/m+ihjOaOqOeQhuWNs+WPry4=
正确答案：Qw==
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