当前位置：首页资讯活动操作提示

操作提示

2026-07-14

最近后台收到超多同学的私信：“安徽单招文化课到底难不难？”“基础差能考过吗？”“有没有高效的复习方法？”

作为专注安徽普通高校单招辅导的团队，今天就来给大家彻底拆解，帮大家卸下心理包袱，找准备考方向！

很多同学一提到“考试”就犯怵，尤其是基础薄弱的同学，更是觉得单招文化课是“跨不过去的坎”。但事实真的如此吗？答案是：安徽单招文化课，真的没有你想象中那么难！

今天就从考试实情、备考方法、避坑指南三个方面，给大家讲透单招文化课，助力每一位同学顺利。

一、先打破误区：安徽单招文化课，难度远低于高考

首先要明确一点：安徽普通高校单招文化课考试，和夏季高考完全不是一个难度等级，它的核心是考查基础知识的掌握程度，而非深度和综合运用能力。

结合安徽省教育厅发布的考试纲要和近年真题，我们总结了几个关键特点，看完你就知道有多“友好”。

1. 考试科目与分值清晰，备考范围明确

安徽单招文化课采用语、数、英三科合卷考试，闭卷笔试，总分300分。其中、，考试时间150分钟。科目少、分值分布明确，不用像高考那样兼顾多门，备考精力能更集中。

2. 基础题占比极高，难题占比极低

根据安徽省教育厅统计，近年单招文化课试卷中，基础题占比稳定在70%左右，中等难度题占25%，仅5%为区分度较高的综合应用题。也就是说，只要你把课本上的基础知识点吃透，掌握例题和课后习题的解题思路，就能拿到210分以上，而单招文化课合格线通常在80分左右，想要顺利通过，完全不需要攻克难题、偏题。

举个例子：语文考字音、字形、病句、浅显文言文和应用文写作，文言文阅读多选自《论语》等常见篇章；

数学侧重集合、函数、数列、立体几何等基础内容，一元二次方程、简单概率计算是高频考点；

英语则以词汇、语法、阅读理解为主，侧重日常应用，没有复杂的长难句和深度阅读题。这些内容，只要认真复习，基础薄弱的同学也能轻松掌握。

3. 通过可观，裸考才是大的“坑”

从近年数据来看，安徽单招考生文化课通过*一直保持在较高水平，大部分认真备考的同学都能顺利达到合格线。

很多同学之所以觉得难，其实是因为“裸考”——没有系统复习，对考试内容一无所知，自然会觉得无从下手。只要肯花时间、用对方法，真的很简单。

二、核心干货：3科备考方法，高效不踩坑

了解了考试难度，接下来就是*关键的备考方法。结合安徽单招考试特点，我们为大家整理了语、数、英三科针对性的复习技巧，简单易操作，基础差也能快速上手。

��语文：抓基础、重应用，不搞“题海战术”

语文的核心是“基础积累+规范表达”，不需要大量刷题，重点抓好这几个模块：

1. 基础模块：字音、字形、病句辨析，每天花20分钟背诵课本上的重点字词和病句类型，结合历年真题里的基础选择题练习，做到“见过就会、做过就对”。

2. 阅读模块：现代文阅读侧重理解文章大意、提炼关键信息，不用纠结于深层含义；文言文阅读重点掌握常见实词、虚词的含义和简单句式，优先复习《论语》《孟子》等考试高频篇目，做到能翻译简单句子即可。

3. 写作模块：单招语文写作以应用文为主（如通知、书信、倡议书等），分值占比约50分，是重点。记住各类应用文的格式规范，积累2-3篇通用模板，结合考试主题灵活修改，保证格式正确、内容完整，就能拿到大部分分数。

��数学：吃透基础知识点，掌握基础题型

数学是很多同学的“痛点”，但单招数学真的不考复杂知识点，重点抓好基础题型，效果立竿见影：

1. 梳理知识框架：对照考试纲要，把集合、函数、数列、立体几何、概率等基础章节的知识点整理成思维导图，明确每个知识点的考查方式和解题思路，杜绝“知识盲区”。

2. 立足课本例题：课本上的例题是基础题型的“母题”，每一道例题都要认真做一遍，理解解题步骤和原理，再结合课后习题巩固练习。不用做偏题、难题，把基础题型练熟，就能应对试卷中70%的题目。

3. 错题整理：把练习中做错的题目整理到错题本上，标注错误原因（是知识点没掌握，还是粗心大意），每天花10分钟复盘，避免重复犯错。

��️ 英语：重词汇、练阅读，抓稳基础分值

，难度*低，重点抓词汇和阅读理解，就能轻松拿分：

1. 词汇积累：每天背诵30-50个单招高频词汇，结合课本单词表和历年真题中的常见词汇，不用背诵复杂的生僻词，重点掌握词汇的基本含义和简单搭配。

2. 阅读理解：单招英语阅读理解以短篇阅读为主，侧重考查信息查找和理解能力。做题时先看题目，再带着问题读文章，快速定位关键信息，不用逐字逐句翻译，提高做题效率。

3. 语法基础：掌握简单的语法知识（如时态、主谓一致、简单从句），应对选择题和填空题即可，不用深入研究复杂语法。

三、备考避坑指南：这3件事，千万别做！

1. 别盲目刷题：很多同学觉得“刷题越多越好”，但单招考试侧重基础，盲目刷大量难题、偏题，不仅浪费时间，还会打击自信心。优先刷历年真题和基础练习题，针对性巩固知识点才是关键。

2. 别临时抱佛脚：单招考试通常在3月中下旬举行，很多同学等到考前一周才开始复习，此时知识点太多，根本记不完。建议提前2-3个月开始系统复习，每天花1-2小时，循序渐进，效果更好。

3. 别忽视文化课：有些同学觉得“职业技能测试才是重点”，忽视文化课复习，结果文化课没达到合格线，连后续校考的机会都没有。

记住，文化课是单招的“入门门槛”，必须重视！

写在最后：单招上岸，拼的不是天赋，是方法和坚持

其实，安徽单招文化课从来不是“拦路虎”，而是大家通往理想高校的“敲门砖”。它不需要你有多么深厚的知识储备，也不需要你熬夜苦读、挑灯夜战，只要你放下顾虑，找准方向，掌握基础知识点，用对复习方法，就能顺利通过考试。

最后，送给大家一句话：不必焦虑，不必慌张，认真复习，稳步前行，你想要的，终会如期而至。

附件：一些模拟题供大家参考，以便了解题目的难易程度

英语

一、单选题（共30题）

单选题| 2分

1、

——Would you please help me with this maths problem?

——______.

A Good idea

B My pleasure

C That's right

D You're welcome

正确答案：B

您的答案：D

解析考查情景交际。句意：——你能帮我解这道数学题吗？——乐意效劳。Good idea：好主意；My pleasure：乐意效劳；That's right:那是对的；You're welcome:不客气。

单选题| 2分

2、

——Mary got ______"A" in her English test again.

——Yeah. She is ______hard-working student.

A an;a

B the;a

C an;the

D the;the

正确答案：A

解析考查冠词辨析。句意：——玛丽在英语考试中又得了“A”。——是的。她是一个勤奋的学生。根据句意可知，两处均表示泛指。A的发音以元音音素开头，故第*空应用不定冠词an；hard—working的发音以辅音音素开头，故第二空应用不定冠词a。

单选题| 2分

3、

I didn't like the birthday cards in the shop, so I decided to create ______.

A them

B these

C one

D it

正确答案：C

解析考查代词辨析。句意：我不喜欢这家店里的生日卡片，因此我决定做一个（生日卡片）。根据句意可知，此处指自己做的生日卡片，属于同类不同物，应用代词one。them：他/她/它们；these：这些；one：一个，指同类不同物；it：它。

单选题| 2分

4、

It's polite to wait in ______ when you buy tickets in the station.

A line

B favor

C time

D memory

正确答案：A

解析考查名词辨析。句意：当你在车站买票的时候，排队等候是礼貌的。wait in line是固定短语，意为“排队等候”。line:行，列；favor:帮助；time:时间；memory:记忆。

单选题| 2分

5、

——Could you please ______ the music? The baby is sleeping.

——Sorry for the loud sound. I will do it right away.

A turn up

B turn in

C turn on

D turn down

正确答案：D

解析考查动词短语辨析。句意：——请把音乐关小好吗？婴儿在睡觉。——抱歉声音太大了。我马上就去关小。turn up:调大；turn in:上交；turn on:打开；turn down:关小。

单选题| 2分

6、

You will not make rapid progress ______ you've learnt to study by yourself.

A while

B until

C since

D when

正确答案：B

解析考查状语从句。句意：直到你学会自学你才能取得快速进步。while：当....时；until：直到..为止，not.until意为“直到···才”；since：自从；when：当···时。

单选题| 2分

7、

If more trees and flowers ______ in our city, it will be more beautiful.

A planted

B are planted

C will be planted

D have planted

正确答案：B

解析考查动词时态。句意：如果我们城市种植更多的树和花，它会变得更加美丽。空处在If引导的条件状语从句中作谓语，根据主句中的“will be”和“主将从现”原则可知，从句应用一般现在时。

单选题| 2分

8、

Jack, hurry up! ______ is on the phone for you. He called himself Mr. King.

A Anybody

B Nobody

C Everybody

D Somebody

正确答案：D

解析考查代词辨析。句意：快点儿，杰克！有人在电话那头等你呢。他称自己金先生。anybody：任何人；nobody：没有人；everybody:每个人；somebody:某人。

单选题| 2分

9、

——Where have you been?

——I have just returned from a visit______ Mr. Smith, my first teacher in primary school.

A for

B on

C of

D to

正确答案：D

解析考察介词辨析。句意：——你去哪儿了？——我刚拜访我的小学启蒙考试史密斯先生回来。a visit to是固定搭配，意为“拜访··”。

单选题| 2分

10、

Sorry, I can't hear you clearly. I ______ a football match, and it's noisy here.

A will watch

B have watched

C am watching

D watched

正确答案：C

解析考查动词时态。句意：抱歉，我听不清楚你说的话。我正在看一场足球赛，这里有点吵。空处在and前的分句中作谓语。根据“I can't hear you clearly”“it's noisy here”可知，此处应用现在进行时。

单选题| 2分

11、

AsK your teacner Ior neip, ______ ne will give you some aavice.

A and

B yet

C or

D but

正确答案：A

解析考查连词辨析。句意：向你的老师求助，他会给你一些建议的。此处是“祈使句+and/or+陈述句”句型，其中and 表顺承，or 表转折。and:和，那么；yet:然而；or:否则；but:但是。

单选题| 2分

12、

My sister used to be shy, but now she is getting ______ in expressing herself.

A nervous

B active

C weak

D quiet

正确答案：B

解析考查形容词辨析。句意：我妹妹过去很害羞，但现在在表达自己方面她变得活跃了。根据“My sister used to be shy,but now”可知，此处表达的意思与shy相反，故应填active。nervous:紧张的；active:活跃的；weak:弱的；quiet:安静的。

单选题| 2分

13、

——Tomorrow we'll go to Shanghai for a meeting. What time shall we leave?

——Let's ______ it at 3:00 p. m.

A take

B have

C begin

D make

正确答案：D

解析考查动词辨析。句意：——明天我们要去上海开会。我们什么时候离开？——我们定在下午三点吧。take：拿走；have:有；begin:开始；make:制造，make it意为“准时到达”。

单选题| 2分

14、

Johnson is a good cook, ______often makes delicious food for his guests.

A whom

B which

C who

D whose

正确答案：C

解析考查定语从句。句意：约翰逊是一位好厨师，他总是为顾客烹饪美味的食物。空处引导定语从句且在从句中作主语，先行词cook指人，故应用who引导从句。

单选题| 2分

15、

——Sally is starting her new business.

——______ Who with?

A Really?

B Lucky you!

C Did you?

D Forget it!

正确答案：A

解析考查情景交际。句意：——萨莉正在开始她的新事业。——真的吗？和谁一起？Really：真的吗；Lucky you：你真幸运；Did you:你呢；Forget it:算了吧。

单选题| 2分

16、

What makes a city a great city? Here is some information about four of the world's most famous cities.

In which country is Mumbai?

A India.

B The UK.

C China.

D Brazil.

正确答案：A

解析细节理解题。根据Mumbai下的第*句“Mumbai is a city on the west coast of India.”可知，孟买是印度西海岸的一座城市。

单选题| 2分

17、

What makes a city a great city? Here is some information about four of the world's most famous cities.

What makes London well known according to the text?

A Its location.

B Its landmarks.

C Its history.

D Its population.

正确答案：B

解析细节理解题。根据London下的最后一句“It is well known for its many landmarks, such as Big Ben and the London Eye.”可知，伦敦以许多地标而闻名，比如大本钟和伦敦眼。

单选题| 2分

18、

What makes a city a great city? Here is some information about four of the world's most famous cities.

Where is the large statue in Rio de Janerro

A In a port.

B In a street.

C On a mountain.

D On a beach.

正确答案：C

解析细节理解题。根据Rio de Janeiro下最后一句中的“a large statue(雕塑)on a mountain”可知，里约热内卢的大雕塑位于一座山上。

单选题| 2分

19、

What makes a city a great city? Here is some information about four of the world's most famous cities.

Which city has the largest number of people?

A Mumbai.

B London.

C Shanghai.

D Rio de Janeiro.

正确答案：A

解析细节理解题。根据Mumbai下的“with a population of over 18 million people”、London下的“has a population of around eight million people"、Shanghai下的“with a population of over 14 million people”和 Rio de Janeiro下的“with a population of around 11 million people”可知，在文中提到的四个城市中，孟买的人口*多。

单选题| 2分

20、

What makes a city a great city? Here is some information about four of the world's most famous cities.

In which section of a magazine can we read the text?

A Sports and Games.

B Health and Diet.

C News Abroad.

D World Around.

正确答案：D

解析推理判断题。通读全文，尤其根据第一段第二句“Here is some information about four of the world's most famous cities.”可知，本文主要介绍了世界上*著名的四个城市。由此可推知，我们会在杂志的World Around版块读到这篇文章。

单选题| 2分

21、

I am Frank Carduna. I work as a gym instructor(教练) in a sports centre. I usually get up at 5 a. m. and make a cup of coffee, without which I'm not at my best. I drive to work-it takes about fifteen minutes on a good day-usually getting there at about 5: 40. The first thing I do is switch on the lights and then the air conditioning if it's summer (heating if it's winter), and the radio as well. We have the radio on all day because our clients like listening to news and music. The sports centre opens at 6 a. m.

I work in a team of four, although only two of us are ever in the gym at the same time. The instructors all wear sports clothes. It's important to be comfortable because we sometimes need to show new clients how to use the machines. Besides, our other tasks are quite simple: we check that everyone has their membership card when they come in, and we check that the machines are clean and safe.

I have a one-hour break for lunch, and I usually do two more hours after lunch. I go home at about 2:30 p. m.

The best part of the job is meeting people. Our clients range from eighteen-year-old body builders to eighty- year-olds who come to exercise and chat. I've never had any problems at the sports centre. It's a really nice job. though it doesn't pay very well. In the evenings I relax by reading a book and cooking for myself, and I'm usually in bed by 9: 30 p.m.

What does Frank do first after arriving at the sports centre?

A Making a cup of coffee.

B Driving fifteen minutes.

C Switching on the lights.

D Listening to news and music.

正确答案：C

解析细节理解题。根据第一段第五句“The first thing I do is switch on the lights and then the air conditioning if it's summer(heating if it's winter), and the radio as well.”可知，弗兰克到达健身中心的第*件事是打开灯。

单选题| 2分

22、

I have a one-hour break for lunch, and I usually do two more hours after lunch. I go home at about 2:30 p. m.

What is included in Frank's tasks?

A Leading a team of four.

B Checking the machines.

C Selling membership cards.

D Washing sports clothes.

正确答案：B

解析细节理解题。根据第二段最后一句“Besides, our other tasks are quite simple: we check that everyone has their membership card when they come in, and we check that the machines are clean and safe.”可知，弗兰克的工作任务包括检查运动器械。

单选题| 2分

23、

I have a one-hour break for lunch, and I usually do two more hours after lunch. I go home at about 2:30 p. m.

Which of the following does Frank like best in his job?

A Reading books.

B Cooking for himself.

C Building up his body.

D Meeting different people.

正确答案：D

解析细节理解题。根据最后一段前两句“The best part of the job is meeting people. Our clients range from eighteen- year-old body builders to eighty-year-olds who come to exercise and chat.”可知，弗兰克认为这份工作*好的部分就是与人见面。他们的客户范围包括从18岁的健美者到80岁的过来锻炼和聊天的老人。即弗兰克认为这份工作*好的部分就是可以遇见不同的人。

单选题| 2分

24、

I have a one-hour break for lunch, and I usually do two more hours after lunch. I go home at about 2:30 p. m.

What does Frank think of his job as a gym instructor?

A Satisfying.

B Complicated.

C Relaxing.

D Well-paid.

正确答案：A

解析推理判断题。根据最后一段第三、四句“I've never had any problems at the sports centre. It's a really nice job,though it doesn’t pay very well.”可知，作者在健身中心工作没遇到任何问题。尽管这份工作薪水不高，但确实是一份不错的工作。由此可推知，作者对他健身教练的工作很满意。

单选题| 2分

25、

I have a one-hour break for lunch, and I usually do two more hours after lunch. I go home at about 2:30 p. m.

Why does Frank write this text?

A To share his daily schedule.

B To complain about his job.

C To introduce the sports centre.

D To offer tips on exercising.

正确答案：A

解析推理判断题。通读全文可知，本文主要描写了弗兰克作为一名健身教练的工作日常和生活日常。由此可推知，作者写这篇文章的目的是和我们分享他的日常安排。

单选题| 2分

26、

Music plays an important part in many people's lives. It has changed through the years. Today there are several different styles of music.

Pop is a simple form of music, easy to follow and remember. Pop songs are often short three-minute songs that people like at once when they first hear them. The words of the songs are often about emotions, usualy love, joy , and regret. Songs by The Beatles are examples of pop songs.

Rock music is usually loud, with strong beats(节拍) from different musical instruments, like drums and two or more electric guitars. One guitar usually makes very low, deep sounds, while the other makes high, quick sounds. Rock songs can be fast or slow, with strong vocals(歌声) and words. The Roling Stones was one of the early rock bands.

Hip hop is a style of music that has a DJ making electronic instrumental sounds, while a singer raps(说唱). The words are considered to be the most important part of hip hop. They usually tel a story about the singer, and sometimes use a lot of strong or bad language. An example of a well-known hip hop singer is Eminem.

R&B has a strong beat, with sounds from guitars, keyboards and vocals. These days R&B is often mixed with other styles. Mariah Carey and Jennifer Lopez are two singers who join styles together to create new musical sounds.

What does the underlined word "emotions" in Paragraph 2 probably mean?

A Efforts.

B Interests.

C Feelings.

D Habits.

正确答案：C

解析词义猜测题。根据画线词所在句“The words of the songs are often about emotions , usually love, joy, and regret."可知，流行歌曲的词通常是关于______的，通常是爱、喜悦和遗憾。结合选项可推知，emotions在此处意为“情感”。

单选题| 2分

27、

Music plays an important part in many people's lives. It has changed through the years. Today there are several different styles of music.

What do rock and R&B have in common?

A Simple forms.

B Strong beats.

C Low sounds.

D Bad language.

正确答案：B

解析细节理解题。根据第三段第*句"Rock music is usually loud, with strong beats (节拍) from different musica instruments, like drums and two or more electric guitars.”和最后一段第*句“R&B has a strong beat, with sounds from guitars, keyboards and vocals.”可知，摇滚乐和节奏布鲁斯的共同之处是都有强烈的节奏。

单选题| 2分

28、

Music plays an important part in many people's lives. It has changed through the years. Today there are several different styles of music.

Which of the following is well known for hip hop?

A The Beatles.

B The Rolling Stones.

C Eminem.

D Jennifer Lopez.

正确答案：C

解析细节理解题。根据第四段最后一句“An example of a well-known hip hop singer is Eminem.”可知，埃米纳姆是著名的嘻哈歌手。

单选题| 2分

29、

Music plays an important part in many people's lives. It has changed through the years. Today there are several different styles of music.

Which style of music is probably developing new musical sounds according to the text?

A Pop.

B Rock.

C Hip hop.

D R&B.

正确答案：D

解析细节理解题。根据最后一段可知，节奏布鲁斯节奏强劲，有吉他声、键盘声和人声。如今节奏布鲁斯常与其他风格的音乐混合。玛丽亚·凯莉和詹妮弗·洛佩兹两名歌手将不同的音乐风格融合创造新的音乐声音。由此可知，节奏布鲁斯正在发展新的音乐声音。

单选题| 2分

30、

Music plays an important part in many people's lives. It has changed through the years. Today there are several different styles of music.

What is the best title for the text?

A The Love for Music

B The Importance of Music

C The Words of Music

D The Many Styles of Music

正确答案：D

解析主旨大意题。通读全文，尤其根据第一段最后一句“Today there are several different styles of music.”可知，本文主要介绍了四种不同风格的音乐。故D项“音乐的多种风格”*适合作文章标题。

数学

一、单选题（共30题）

单选题| 4分

1、已知集合A={-2,-1,0},B={-1,2},则AUB=

A {-2,-1,0,2}

B {-2,-1,0}

C {-1,2}

D {—1}

正确答案：A

解析因为集合A={—2，—1，0}，B={—1，2}，所以AUB={—2，—1，0，2}.

单选题| 4分

2、“x>2”是“x>1”的

A 充分不必要条件

B 必要不充分条件

C 充要条件

D 既不充分也不必要条件

正确答案：A

解析易知x>2能推出x>1，故充分性成立；x>1不能推出x>2，故必要性不成立.所以“x>2”是“x>1”的充分不必要条件.

单选题| 4分

3、设a，b，c∈R，且a>b，则下列结论正确的是

A ac2

B a+c

C a—c>b—c

D ac>bc

正确答案：C

解析A项，若c=0时，则ac2不成立，故A错误.由a>b及不等式的性质，可知a+c>b+c，故B错误.由a>b及不等式的性质，可知a—c>b—c，故C正确.若c≤0，则由a>b及不等式的性质，可知ac≤bc，故D错误.

单选题| 4分

4、已知线段P1P2的中点坐标为（1，2）.若点PP1（—1，0），则点P2的坐标为

A （0，1）

B （3，4）

C （1，1）

D （—3，—2）

正确答案：B

单选题| 4分

5、不等式|x—1|<3的解集为

A {x|x<-2}

B {x|x>4}

C {x|-2

D {x|x<—2或x>4}

正确答案：C

解析由|x—1|<3得—3—1<3，解得—2

单选题| 4分

6、已知直线l 1:2x-3y-1=0,l 2:ax+6y+1=0.若l 1//l 2，则a=

A 9

B -9

C 4

D —4

正确答案：D

解析因为直线l1：2x—3y—1=0，l2：ax+6y+1=0，且l1/l2，所以

单选题| 4分

7、在等比数列{an}中，a2=3，公比q=3.若此数列的前n项和Sn=40，则n=

A 3

B 4

C 5

D 6

正确答案：B

解析等比数列{an}中，a2=3，公比q=3，所以，解得n=4.

单选题| 4分

8、以点（1，—1）为圆心，且过坐标原点的圆的方程为

A (x-1)2+(y+1)2=4

B (x+1)2+(y-1)2=4

C (x-1)2+(y+1)2=2

D (x+1)2+(y-1)2=2

正确答案：C

解析由题意可知所求圆的半径为，所以所求圆的方程为(x-1)2+(y+1)2=2.

单选题| 4分

9、某校高一年级有210名学生，高二年级有180名学生，高三年级有150名学生.为了解学生身体状况，该校采用分层抽样的方法抽取n名学生进行体能测试，若从高二年级抽取了30名学生，则n=

A 55

B 65

C 90

D 120

正确答案：C

单选题| 4分

10、已知函数若f（4）-f（0）=7，则a

A 23

B 9

C 3

D 1

正确答案：B

单选题| 4分

11、已知函数，关于此函数下列结论正确的是

A 最小正周期为

B 振幅为4

C 初相为

D 频率为

正确答案：A

单选题| 4分

12、若数列{an}的前n项和Sn=n2+n,则a2=

A 8

B 6

C 4

D 2

正确答案：C

解析易知a2=S2-S1=(4+2)-(1+1)=4.

单选题| 4分

13、在空间中，下列结论正确的是

A 垂直于同一直线的两条直线一定平行

B 垂直于同一平面的两条直线一定平行

C 平行于同一平面的两条直线一定平行

D 没有公共点的两条直线一定平行

正确答案：B

解析A项，垂直于同一条直线的两直线平行或异面或相交，故A错误.B项，垂直于同一平面的两直线平行，故B正确.平行于同一平面的两直线平行或异面或相交，故C错误.D项，没有公共点的两直线平行或异面，故D错误.

单选题| 4分

14、已知f（x）是R上的奇函数.当x<0时，f（x）=x2+4x.若af（a）>0，则a的取值范围是

A (-4,0)U(4,+∞)

B (-∞,-4)U(0,4)

C (-4,0)U(0,4)

D (-∞,-4)U(4,+∞)

正确答案：C

解析当x<0时，f（x）=x2+4x，所以当x>0时，—x<0，f（—x）=（—x）2+4（—x）=x2—4x，因为f（x）是奇函数，所以f（x）=—f（—x）=—x2+4x，故当x>0时，f（x）=—x2+4x.当a<0时，由af（a）>0得f（a）<0，即a2+4a<0，解得—4当a>0时，由af（a）>0得f（a）>0，即—a2+4a>0，解得0综上，a的取值范围是(-4,0)U(0,4).