书面表达复习巩固专讲专练(章末复习+综合测评+答案)
书面表达复习巩固专讲专练(章末复习+综合测评+答案)
一、中考英语书面表达汇编
1.(·安徽中考模拟)书面表达
你看过中央电视台董卿主持的节目《朗读者》吗?这是一档非常受欢迎的节目,让我们看到生活中读书的美好、读书的重要。请根据下面表格中所列的要点,以“Growing Up with Reading”为题写一篇短文。
要求:1.语言表达准确,短文连贯、通顺;
2.短文应包括所有内容,可适当发挥,不要逐句翻译;
3.词数80词左右;文章开头部分已给出,不计入总词数。
【答案】Have you watched the program The Reader hosted by Dong Qing on CCTV? The program is very popular, and it makes us find the beauty and the importance about reading in our life.
Reading is wonderful. We can get knowledge by reading. Reading can open our minds. Reading makes us confident and happy.
Read good books. Proper books that can improve ourselves are better choice. You should read in a right way. Try to think about more while reading.
Keep a love for reading. However, some of us spend much time watching TV or playing games
online in our spare time. I’d like to suggest that everyone should read more and develop a reading habit.
Let’s grow up with reading. Let reading become a part of our life!
【解析】试题分析:本文是材料作文,也是话题作文,话题是“读书伴我成长”,以“Growing Up with Reading(读书伴我成长)”为题写一篇短文。根据内容提示可知本文使用的时态有一般现在时。写作时,列好提纲,注意使用连词,句型、句式,使文章整体意思连贯,表达流畅。写完以后,注意再读一遍,看看有无拼写,语法错误(时态,主谓一致等)。(一)列提纲,本文给词的要点就是提纲,把要点中的重要短语翻译成英文:the beauty and the importance/ get knowledge/ open our minds/ makes us confident and happy/ proper books that can improve ourselves/ read in a right way/ think about more/ spend much time watching TV or playing games online in our spare time/ develop a reading habit./ Let’s grow up with reading. Let reading become a part of our life!;(二)根据提纲连词成句,连句成篇,注意连词的使用。(三)写完以后,在阅读一遍,检查单词拼写,语法,动词时态,语序,大小写,标点符号,主谓一致等是否有错误。
点睛:这是一篇比较优秀的作文,语言表达要符合英语习惯,准确运用时态,上下文意思连贯,用词准确、句子通顺。(1)学习中注意总结,牢记一些固定句式及短语,写作时就可以适当引用,使文章的表达更有逻辑性,更富有条理。(2)注意给出的起始句(这就给出了时态),学生运用正确的时态,运用所给或所学的词语,尽量运用熟悉的句型。(3)列好提纲和要点,及需要的重要短语或句型。(3)切忌堆砌词语,句子,注意运用适当的连词使句子流畅,连贯。注意表达的顺序。(4)注意书写的规范:大小写,标点符号等的正确运用。(5)注意检查:单词拼写,语法,动词时态,语序,主谓一致等。
2.(·江苏中考模拟)临近毕业,学校在学习小组内开展了初中阶段自评和组评活动,假设你是 Moonlight 小组的组长,请根据下面表格中的信息和提示,为你的组员 Tommy 进行综合素质的评价,写一份素质报告.
要求:1、表达清楚、语法正确、上下文连贯;2、要点必须包括所有相关信息,并作适当发挥;3、词数:100 词左右;4、不得使用真实姓名、校名和地名等
Tommy is a member of my team called Moonlight.
【答案】Tommy is a member of my team called Moonlight. He is clever and he is good at all his lessons. He is so generous that he shares everything with his friends.He likes reading because he thinks he can get much knowledge and learn more about the world by reading. And reading has a good effect on children’s growth. At home, he can help his parents do some housework. At school, he gets on well with his classmates. On the way to school, he obeys the traffic rules. He crosses the road when the light is green. Our school presented him with Award for Best Student this year. However, Tommy is stressed when the exam comes. And he doesn’t have enough sleep.
I think he should go over what he has learned before exams. It’s better for him to manage his time wisely so that he can have enough time to rest.
【解析】
这篇作文要求我们按照表格里的内容介绍一下Tommy的情况,为Tommy写一篇综合素质的评价报告。在表格中有非常详细的关于Tommy各方面的内容,我们需要用正确的英语把这些内容有条理的表达出来。表格中涉及的内容较多,写作时要注意表达的条理性。这篇作文应主要使用第三人称来写。在最后要给Tommy提一些建议,这一部分应该用第一人称。同时注意表达的准确性,尤其是表格中的第五项和第六项内容。
【亮点说明】这是一篇比较优秀的范文。这篇作文内容完整,包含了表格中的所有内容,没有遗漏要点。表达准确,注意了被动形式的使用,如He was rewarded by our school this year.。写作时注意了条理性,使文章具有层次感,条理清楚。短文注意到了长短句的结合,并恰当的使用了一些连词,使文章表达的连贯。如He is always ready to help others.、He not only likes reading detective novels but also likes watching programs about sports news.、He is good at running. He won the first place in our school sports meeting this year.等。
3.(·广东中考模拟)书面表达
假设你是刘莉,你的美国笔友Amy来信想了解中国的传统节日端午节。请你回信给她介绍端午节。
参考词汇:农历:Chinese Lunar calendar 糯米:sticky rice
Dear Amy,
_______________________________________________________________________________
_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________
Best wishes!
Yours sincerely,
【答案】Dear Amy,
I learn from your letter that you want to know something about the Chinese traditional festival---the Dragon Boat Festival. I ‘m happy to share what I know about it with you.
The festival has a history of more than 2000 years. It falls on the fifth day of the fifth month according to the Chinese lunar calendar. On that day, people watch exciting dragon-boat races and make delicious zongzi, a kind of special food with sticky rice, meat, etc, wrapped in bamboo leaves. These two are both done in memory of Quyuan, a great poet in history.
In a word, we a ll love the festival because it’s a good reminder to look back on
history and a wonderful time to get together with family. I hope that you can come to celebrate it with us in the near future.
【解析】这是一篇给材料作文,介绍中国的传统节日端午节。结合所给材料,可知本文主要考查一般现在时,人称为第一,三人称,注意主谓一致问题,句子结构主要为系表结构和动宾结构,注意一些常见句式的应用,比如:I learn from your letter that……,I’m happy to……,The festival has a history of……,These two are……,we all love……,I hope that……等句式的应用。写作中注意运用代词,注意多种句式交替运用。写作中注意叙述顺序,符合逻辑关系。
点睛:本文结构紧凑,语言简练。开头表达了我很高兴向你介绍端午节,接下来介绍端午节的历史,日期,庆祝活动,特色食物和目的,最后表达我的感受。此处want to do sth, share sth with sb, according to, in a word, look back, get together等这些词组的运用也让文章增色不少。
4.(·山东中考模拟)书面表达。
现在各行各业都在为建设美丽中国,实现中国梦而奋斗.请根据下列图示,谈谈以下几种职业怎样做贡献的.作为学生,你又该怎么办?
要求:1、短文需包含提示要点,并适当发挥;
2、文中不得出现真实姓名和校名;
3、语句通顺,结构合理,书写规范;
4、词数:80词左右.短文开头部分已给出,不计入总词数.
Now all the Chinese people are making their efforts to build beautiful China and achieve the Chinese Dream.
【答案】Now all the Chinese people are making their efforts to build beautiful China and achieve the Chinese Dream.
In the fields,a large number of farmers work hard every day to improve our living levels.In order to produce enough vegetables and fruit,they are busy growing plants.Meanwhile,in hospitals,doctors and nurses always try their best to save patients day and night.Besides,they also take good care of the old.(医生)In our daily life,we can see many policemen in the streets on duty to protect people.(警察)As for scientists,they concentrate more on scientific studies to invent something useful and raise our living standards.(科学家)As students,what should we do to build our country?I think we should study hard to get rich knowledge so as to make contributions to our country。
【解析】这是一篇给材料作文,介绍为建设美丽中国,实现中国梦,农民,医生,警察和科学家怎样做贡献的。结合所给材料,可知本文主要考查一般现在时态,人称为第一,三人称,注意主谓一致问题,句子结构主要为系表结构和动宾结构,注意一些常见句式的应用,比如:Now all the Chinese people are……,they are busy……,we can see……,I think……等句式的应用。写作中注意运用代词,注意多种句式交替运用。写作中注意叙述顺序,符合逻辑关系。
点睛:本文结构紧凑,语言简练。开头介绍了为了实现中国梦,中国人正在努力做贡献,接下来介绍农民、医生、警察和科学家如何做贡献的,最后表示我们作为学生应该做的事。此处make efforts to do sth, a large number of, be busy doing sth. try one’s best, take good care of, concentrate on, make contributions to等这些词组的运用也让文章增色不少。
5.(·山西中考模拟)书面表达请将作文写在答题卡相应的位置上。
在家庭生活中,我们会做很多关于我们青少年的决定,比如该买什么新年衣服,该怎样庆祝生日,该上哪所学校等。你认为在我们自己的事情上应该自己做决定,还是听从家长的意见?针对这一话题,九年级七班的同学们展开了辩论。
假设你是正方或反方的一员,请围绕你的观点,结合自身的亲身经历
.......,说出2至3条理由来支持你的观点。(只能选择一方观点表达。)
要求:1. 词数不少于80词; 2. 文章的开头已给出,不计入总词数。
【答案】One possible version:
At home, I think teenagers should make their own choices. Learning to make our own choices can help us to be more independent.
After I entered junior high school, I made every choice on my study, from which reference books to buy to how to plan time for study. Unlike other students, I didn’t need my parents to be with me when I was studying. With the development of this learning habit, I soon realized that I could do better in study than other classmates who often depended on teachers and parents. Before making every choice, I carefully considered the advantages and disadvantages of my actions and in that way, I grew up independently.
There is no wonder that we will grow up some day and live on our own. Although parents undoubtedly care about us, we still need to make our own decisions when it comes to our personal things. Everyone needs to learn to grow up to get prepared for future life.
【解析】这篇作文要求我们写一篇议论文,论点是:在我们自己的事情上,我们应该自己做决定,还是由家长来做决定。关于这个话题每个人都会有自己的看法,题目要求我们任选一个观点来讲述,并结合自己的亲身经历,给出2到3个理由。写作之前,我们应先从正方和反方中选择一个,作为自己的观点,然后围绕这一观点阐述自己的理由。这是一篇话题作文,题目中并没有给我们规定具体的写作内容,我们应发挥自己的想象力,结合自己的日常生活来组织语言,丰富文章的内容。写作时还应注意的是语言的表达,英语的表达习惯和汉语是不同的,我们不能按照汉语思维,逐词翻译,而是从句子的整体考虑,使用恰当的词汇和句型,多用简单句,如主谓宾、主系表的结构,点缀几个复合句或并列句,调整文章节奏,让文章的句子富于变化,有新鲜感。高级句型或词汇的使用也可以提升文章的档次,在语句之间使用恰当的连接成分,使文意表达连贯、流畅。
点睛:这是一篇优秀的作文。首先短文内容完整,观点明确,结构合理。短文作者选择了正方的观点,第一句话先点明自己的观点是什么,接下来围绕这一观点进行阐述,并从自己的经历出发,阐述了自己持有这一观点的理由,充分、合理,有说服力。最后一段作者
重申自己的观点,并进行了总结。其次短文中使用了正确的时态、人称,文章以一般现在时态和一般过去时态为主,谓语动词形式准确,语法规范。句式表达符合英语的表达习惯,简单句为主,也使用了较多的复合句和高级句型,如状语从句、宾语从句、定语从句、非谓语动词等。有些句子较长,是由于使用高级句型所致,一味使用较长的句子也会导致文章的冗长,让读者感觉比较累,因此要注意调整文章的节奏。短文中较好的句型和短语有Learning to make our own choices can help us to be more independent.、After I entered junior high school, I made every choice on my study, from which reference books to buy to how to plan time for study.、Before making every choice, I carefully considered the advantages and disadvantages of my actions and in that way, I grew up independently.、There is no wonder that we will grow up some day and live on our own. 、Although parents undoubtedly care about us, we still need to make our own decisions when it comes to our personal things.等。
6.(·陕西师大附中中考模拟)书面表达
“文明是一面镜子,折射出一座城市的品质”。西安作为一座古老的城市在创建国际化大都市的过程中,离不开精神文明建设。在你身边有哪些不文明现象?作为中学生,我们应该从哪些方面做起,为文明城市的建设出一份力?请根据提示词,以“Let’s help Xi’an be better”为题,号召全体中学生共创美好西安。
提示词:spit 吐痰; respect; traffic rules; volunteer; collect the trash; plant trees; clean the streets; an environmental project….
要求:1. 不少于70词(开头已给出,不计入总词数);
2. 文中不得出现真实的姓名和校名;
3. 语言流畅、书写规范、卷面整洁。
Let’s help Xi’an be better
Our city is making its effort to become an international city. But in our daily life, we
find_____________
_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ ___________________________
【答案】Let’s help Xi’an be better
Our city is making its effort to become an international city. But in our daily life, we find many bad behaviors around us. For example, many students spit everywhere. Some students don’t follow the traffic rules. Also, some students don’t respect others. These are not ri ght. As students, we should do our part to build a civilized city. We can plant more trees to make our environment better. On weekends, we can help clean the streets and collect the trash in public places. Besides, we can do volunteer work to help others. Let’s work together to make our city more civilized and more beautiful.
【解析】
【详解】
这篇作文要求我们阐述身边的不文明现象,并阐述我们应该如何做,为文明城市的建设出
一份力。题目中只给出了话题和一些提示词,具体的写作内容应由学生们自己发挥想象力,进行补充,这是写作中的一个难点。需要注意题目中给出的提示词在文章中必须要用上,可以根据表达需要调整顺序。写作时,学生们可以根据提示词,或联想自己的实际生活,列举身边的不文明现象,然后对创建文化城市提出自己的看法。审题可知,短文应以一般现在时态为主,第一人称来叙述。写作时应注意英语句式结构和汉语是不同的,不能按照汉语思维逐词翻译,应从句子的整体结构考虑,写完整的句子,并注意使用适当的句型去表达,变化单词的正确形式。为提升文章档次,在文章中应穿插几个并列句或复合句的结构。同时注意语句之间使用恰当的连接成分,使文意连贯。
【点睛】
这是一篇优秀的作文,短文作者根据题目提示,介绍了自己身边的不文明现象,并对中学生如何创建文明城市贡献自己的力量提出了自己的看法。短文有以下几个优点:首先文章内容完整,包括了题目中要求的所有信息,且叙述完整,内容充实。文章内容分成两个部分:第一部分列举了一些不文明现象;第二部分介绍了为创建文明城市,中学生应该怎么做。层次清晰,结构合理。其次短文使用了正确的时态和人称,语法规范,用词准确。句式结构完整,以简单句为主,叙述清楚、简洁。短文中的一些好的句型和短语有Also, some students don’t respect others、As students, we should do our part to build a civilized city.、We can plant more trees to make our environment better. 、On weekends, we can help clean the streets and collect the trash in public places. 、Besides, we can do volunteer work to help others等。
7.(·陕西师大附中中考模拟)书面表达
初中就要毕业了,校报“英语角”栏目向同学们征集毕业晚会的计划。假定你是李明,请根据要点写一封信,说说你的计划。
要求:1.写作要点都必须用上;紧扣主题,适当发挥;
2.语句通顺,意思连贯,书写工整;
3. 文中不得出现真实姓名和地名;
4. 词数不少于70词。(开头和结尾已给出,但不计入总词数)
Dear editor,
I am very happy to have the chance to show my plan for the graduation party.
_______________________________________________________________________________
_______________________________________________________________________________ _______________________________________________________________________________ ___________________________ Yours,
Li Ming
【答案】Dear editor,
I'm very happy to have the chance to show you my plan for the evening party.It will be held in our school hall at 7 o’clock,on June 22n.I have planned three activities for it.First of a11,we would like to invite our teachers to come.We will give each other gifts and give our best wishes.After that,one of the students will read a thank-you letter to all the people who have helped us.In the end,some pictures will be shown to share the happy times we have had together.
This is what we will do.I hope you will choose my plan.
Yours,
Li Ming
【解析】
【详解】
初中就要毕业了,校报“英语角”栏目向同学们征集毕业晚会的计划。假定你是李明,请根据要点写一封信,说说你的计划。本题是一篇图表作文,信息提示简洁明了,但是必要的补充和想象是必不可少的,切忌照信息翻译句子,必须通过适当的连词保证文章通顺,就本题而言,介绍三项活动时,要有必要的顺序词.
【点睛】
文中使用了非常好的短语和句子为文章增色不少,如:After that,one of the students will read a thank-you letter to all the people who have helped us;In the end,some pictures will be shown to share the happy times we have had together.文章层次清晰,内容饱满,表达流畅。
8.(·山东中考模拟)写作
现在全世界都在倡导“低碳生活(low-carbon life)”,即:降低二氧化碳的排放,采取低能量、低消耗、低开支的生活方式。低碳生活对我们大家都有好处,请你写一篇短文向一家英文报社投稿。内容包括:你的具体做法、你的感受以及建议。
提示词语:be good for,everyone,ride a bike,think,make a difference,environment,suggest,reuse _______________________________________________________________________________ _______________________________________________________________________________ _
【答案】Low-carbon life is good for everyone.To help with the environment,I always walk or ride a bike to school instead of taking a car.Besides,I will try to use things that can be recycled and I never forget to turn off the lights when I leave the classroom.I think it's my duty to live a low-carbon life.And even the simplest activities can make a real difference to the environment.So I suggest we should reuse books as long as possible.And we'd better not spend much money on
expensive
clothes.
If everyone does something for the environment,I believe the earth will be a better place
【解析】
【详解】
本文属于话题作文,针对“低碳生活”你的做法、感受以及建议。根据要表达的内容确定并
准确运用时态,上下文意思连贯,符合逻辑,可适当增加内容。
亮点说明:这是一篇优秀的作文,很好的完成了试题规定的任务,语言表达符合英语习惯,准确运用时态、主谓一致,特别使用一些亮点词句,如be good for, help with, instead of, besides, make a difference, as long as possible, had better do, it is my duty to。增强逻辑关系,增加上下文意思连贯,用词准确,句子通顺,行文连贯。
【点睛】
写作时可以从以下几个方面做起:
认真审题。审好题是写好书面表达的关键。审题时要注意试题的要求,抓住要点,词数符合要求。
构思提纲。有了提纲,我们就可以根据提纲和主题确定相关的写作材料。通常书面表达给出的话题是开放的,而具体的内容要求学生自己发挥,因此选择恰当的素材也是使短文中心突出、明确的关键。
初写短文。一切都准备就绪,就可以动笔写作了,在写作的过程中我们要注意句子的准确性、连贯性以及简洁性。使用的词语、短语及句型尽量用自己有把握的词。同时还要注意使用恰当的连词,使句子衔接自然。
修改润色。修改润色是获取高分的必要步骤。这一步我们除了检查短文的各种错误外,还要检查语法结构是否合理,有无重复、啰嗦的语言,大小写是否正确,格式是否正确,词数是否符合要求等。
9.(·江苏赣榆实验中学初三)初中的三年即将过去,这三年里你一定学会了不少东
西。假如你是Jack,你想给老师写一封感谢信,表达你的感激之情。请根据下列提示,完成这封感谢信。词数100左右。开头已经写好,不计入总词数。
1. 学会了如何学习:课前预习;课堂认真听讲,记笔记:课后认真完成作业,及时复习;懂得了读书的重要性,养成了好的阅读习惯,为以后的学习做好准备。
2. 懂得了如何做人:在家里,爱父母和家人,帮父母做力所能及的事:在学校,尊重老师,关爱同学,做文明学生;在社会,遵守交通规则,爱护花草树木,…(适当补充)
3. 以后的打算:……(适当补充)
Dear teachers,
How time flies! Nearly three years has passed. I will graduate from the school. I want to say "Thank you, dear teachers." It is you who have taught me a lot of things.
_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________
_______________________________________________________________________________【答案】Dear teachers,
How time flies! Nearly three years has passed. I will graduate from the school. I want to say "Thank you, dear teachers." It is you who have taught me a lot of things.
First,I learn how to learn. I preview before class, listen carefully in class and take notes. I finish homework carefully after class and review in time. I understand the importance of reading and develop good reading habits to prepare for future learning.
Secondly, I know how to be a person. At home, I love parents and family and help parents do what they can. At school, I respect teachers, care for classmates, and try to be civilized students. In society, I obey traffic rules, love flowers and trees. I try to be a civilized teenager.
I am going to study harder in high school. I will meet new challenges and enter my dream university. I will make greater contributions to society in the future.
Yours,
Jack 【解析】
10.(·北京中考模拟)中国传统文化源远流长,代代相传。近期各校都在开展学习中国传统文化活动。某网站正在开展以“弘扬中国传统文化”为题征文,请你用英文写一篇报道,介绍你校上周举办的“讲中国成语故事”活动并谈谈你的收获与感受。
提示词语: Chinese idioms, story, collect, share, learn from, acient
提示问题:● What did you do during the activity of "Telling Chinese idiom s story"?
● What did you learn from the activity?
● What do you think of it?
【答案】The activity of “Telling Chinese idioms story” was held in our school last week.
In order to take part in this activity, I collected lots of Chinese idiom stories in advance. Many students, including me, actively shared the Chinese idiom stories in the activity. After each story, the teacher explained the meaning of idioms and how to use it correctly. We learned a lot from our teacher.
I did lots of reading in the process of p reparation. My reading ability has improved greatly. What’s more, I realized the richness of Chinese acient culture. I really had a good time on the activity.【解析】
【详解】
1.题干解读:这是一篇提纲类书面表达,只给了一些要点提示,但都不很明确。学生除了要把所给要点提示都表达出来外,还要进行适当拓展,使文章内容充实。
2.例文点评:例文采用三段式;用第一人称来叙述讲成语故事活动;因为活动已经举办,所以时态采用一般过去时;对参加活动的过程描写完整且条理清晰。
3.高分亮点:
短语:in order to,take part in,lots of,learn from,in the process of,What’s more,have a good time。
句型:被动句型。
二、中考英语完形填空汇编
11.阅读下面短文,从每小题所给的四个选项中,选出一个最佳选项。
I went to school in China for four years and for another six years in Canada. There are two teachers from these countries that really impressed me even though they are very 1 .
When I 2 to Canada, I couldn't even order food on the flight. After two months on an ESL (English as a Second Language) course, I got my first 3 card. My mark in English was 65. I was very 4 . I couldn't 5 what would be said at the parent-teacher interview.
"Hello!" Mrs. Franceschini welcomed my parents. "Richard just came to Canada a few months ago. I am amazed at how his English has 6 so fast," she said. "On his first day, he was very shy and only used 7 words. Now he can answer and ask questions by us in whole sentences."
8 many other Chinese parents, my mom asked if she could give me extra homework. "Don't worry. Richard is already working very hard," Mrs. Franceschini laughed. Then she shook my hand. "Richard, you did a good job. I am 9 of you!" she said.
Back in Shanghai, my teacher Miss Li was very 10 . In a test, my average(平均分)was 97, top of the class. I was proud to take parents 11 the interview.
Miss Li told my parents, "Feng Yu is doing pretty well. But because of his 12 , he lost 3 points in math. Otherwise he would be the top of the school."
I thought she was being 13 to me. But when I was about to leave, I realized Miss Li was ver nice. She hosted a party for me and gave me a big card. Her phone number and e-mials address were on the card. "Feng Yu, you re my best student. I 14 you a successful life," she wrote. "If you want to talk or need any help, I am always here for you."
Miss Li and Mrs. Franceschini are both great teachers, just in different ways. One built up my learning abilities. 15 gave me tons of confidence and made learning enjoyable. I'm proud to have had them as my teachers.
1. A. kind B. strict C. similar D. different
2. A. moved B. arrived C. reached D. visited
3. A. birthday B. green C. report D. ID
4. A. satisfied B. upset C. serious D. careful
5. A. imagine B. tell C. wonder D. doubt
6. A. changed B. improved C. spoken D. increased
7. A. long B. popular C. simple D. complete
8. A. With B. Except C. Against D. Like
9. A. proud B. certain C. afraid D. free
10. A. patient B. strict C. friendly D. hard-working
11. A. in B. off C. to D. up
12. A. method B. action C. habit D. carelessness
13. A. unfair B. nice C. crazy D. polite
14. A. hope B. prepare C. offer D. wish
15. A. Other B. The other C. Another D. The others
【答案】(1)D;(2)A;(3)C;(4)B;(5)A;(6)B;(7)C;(8)D;(9)A;(10)B;(11)C;(12)D;(13)A;(14)D;(15)B;
【解析】【分析】文章大意:文章介绍了作者心目中最好的两个老师,虽然他们呢不一样,但是在我的人生中起到了重要作用,一个培养了我的能力,一个给了我信心,我跟骄傲拥有这两位老师。
(1)句意:有两个来自这些国家的老师给我留下了深刻的印象,即使他们很不一样。A.善良的;B.严厉的;C.相似的;D.不同的。根据下文的叙述可知两位老师对他的要求是不一样的,一个是在学业上严格,一个是让他建立了自信。故答案是D。
(2)句意:当我搬往加拿大时,我甚至不会在航班上订餐。A.搬运,挪动;B.到达;C.到达;D.参观。根据 on the flight 可知是在去加拿大的途中。因此moved最符合语境,故答案是A。
(3)句意:两个月的英语ESL课程之后,我拿到了我的第一个成绩单。成绩单report card,固定用法,故答案是C。
(4)句意:我很难过,A.满意的;B.难过的;C.严肃的;D.认真的。经过两个月的学习英语才得到了65分,我不会满意,可以想象我很生气。故答案是B。
(5)句意:我想象不到我会在家长教师采访中说什么。A.想象;B.告诉;C.想知道;D.怀疑。根据前面的叙述可知我很生气,就不知道说什么了,所以说是想象不到。故答案是A。
(6)句意:我很吃惊他的英语如何进步这么快。A.改变;B.提高;C.说;D.增加。根据后面的叙述可知一开始他只会使用简单的单词,现在居然考了65分,老师对他的进步表示吃惊,故答案是B。
(7)句意:在第一天,他很害羞,只会使用简单的单词。A.长的;B.流行的;C.简单的;
D.完全的。结合语境考虑 simple搭配words最为合适。故答案是C。
(8)句意:像许多其他的中国的父母一样,我妈妈问她是否能给我点额外的作业呢。A.带着;B.除了;C.反对;D.像。中国的家长都需要孩子多做点作业,认为这样可以提高成绩,根据 if she could give me extra homework.这点可知我妈妈就像许多中国的家长一样。故答案是D。
(9)句意:我为你感到骄傲。A.骄傲的;B.一定的;C.害怕的;D.自由的。根据hard-working 可知,理查德做得好,老师应该为自己的学生感到骄傲。故答案是A。
(10)句意:回到上海,我的老师李老师非常严格。A.耐心的,B.严厉的;C.友好的;D.辛勤的。根据 Miss Li told my parents, "Feng Yu is doing pretty well. But because of his 12 , he lost 3 points in math. Otherwise he would be the top of the school." 可知老师为他丢了三分都会感到遗憾,因此老师是比较严格的,故答案是B。
(11)句意:我很骄傲带着父母接受了采访。take sb. to…带某人去某地,固定搭配。故答案是C。
(12)句意:因为他的粗心,在数学考试中丢了3分。A.理论;B.行动;C.习惯;D.粗心。根据 he lost 3 points in math 可知,在老师的眼里,这三分是本应该拿到的,因为粗心却丢
失了,故答案是D。
(13)句意:我认为他对我不公平。A.不公平;B.好的;C.疯狂的;D.有礼貌的。根据前文
的叙述可知我考试只丢了3分,她还说我粗心,所以我认为这样对我不公平,故答案是A。
(14)句意:我祝愿你生活成功。A.希望;B.准备;C.提供;D.希望。wish sb.+名词,固定
搭配,希望某人怎么样。故答案是D。
(15)句意:另一个给了我许多信心。one…the other,一个……,另一个……,固定短语,
故答案是B。
【点评】考查完形填空,首先通读一遍文章,跳过缺失的单词,再根据上下文来判断所缺
单词的含义,最后对选项进行区别,选出正确的那一项。
12.阅读下面短文,根据短文内容,从A、B、C三个选项中选出可以填入空白处的正确答案。
One day in class, the teacher held up an apple. She stood on the platform (讲台) and said, "Please 1 it in the air, and…"
One student 2 his hand and said, "I can smell it. It is the smell of an apple."
The teacher stepped 3 the platform, passed by each of the students and said, "Smell 4 to see if the smell of the apple is still in the air."
Half of the students put up their hands to show that they could smell it. The teacher returned
to the 5 of the classroom and asked again who else could smell the apple. The rest raised their hands except one boy. The teacher came to the boy and asked, "You really can't smell the apple?"
The boy answered, "No, I can't smell it. I don't think it's a 6 apple."
The teacher 7 at the boy and said to the class, "He's right! It's not 8 to get the apple smell from this apple."
All of the other students had been tricked. Some may have thought that perhaps the apple didn't have the apple smell, 9 they didn't dare to speak up. They just 10 the first student blindly and went along with him.
1. A. watch B. feel C. smell
2. A. shook B. raised C. showed
3. A. on B. off C. towards
4. A. later B. once C. again
5. A. front B. middle C. back
6. A. real B. tasty C. nice
7. A. laughed B. smiled C. shouted
8. A. surprising B. possible C. common
9. A. and B. so C. but
10. A. followed B. admired C. preferred
【答案】(1)C;(2)B;(3)B;(4)C;(5)A;(6)A;(7)B;(8)B;(9)C;(10)A;
【解析】【分析】主要讲了一天老师在课上问谁可以闻到苹果的味道,结果很多同学都说
自己可以闻到,只有一个男孩说苹果是假的,闻不到苹果味,最终老师说这个男孩是正确的。
(1)句意:请闻空气中的它。A.观看;B.感到;C.闻起来。根据后文可知是让学生闻苹果味,故选C。
(2)句意:一个学生举起手。A.摇晃;B.举起;C.表明。raise one's hand,举起手,固定搭配,故选B。
(3)句意:老师走下讲台。A.在......上面;B.离开;C.朝向。根据后句passed by each of the students,可知老师走下讲台把苹果递给学生,step off走下,故选B。
(4)句意:再闻一次看看苹果味是否还在空气中。A.之后;B.一次,曾经;C.再次。根据
前文可知一个学生已经闻过了,所以是再次闻,故选C。
(5)句意:老师回到教室前面。A.前面;B.中间;C.后面。根据前文可知老师是从讲台上
到学生间的,所以是返回到前面,故选A。
(6)句意:我认为它不是一个真的苹果。A.真正的;B.可口的;C.漂亮的。根据后文可知
苹果没有苹果味,所以不是真的苹果,故选A。
(7)句意:老师对那个男孩微笑。A.嘲笑;B.微笑;C.喊叫。根据后文可知男孩说对了,
所以老师对他微笑,smile at sb.朝某人微笑,故选B。
(8)句意:闻到这个苹果的味道是不可能的。A.惊讶的;B.可能的;C.共同的。根据句子
可知苹果是假的,所以不可能闻到苹果味,故选B。
(9)句意:但是他们不敢说。A.和;B.所以;C.但是。根据前句Some may have thought that perhaps the apple didn't have the apple smell,一些认为苹果没有苹果味,但是他们不敢说,故选C。
(10)句意:他们仅仅盲目地跟着第一个学生。A.跟随;B.欣赏;C.偏爱。根据全文可知第
一个学生说有苹果味,其他同学就说有苹果味,所以是盲目跟随,故选A。
【点评】考查完形填空,首先通读一遍文章,跳过缺失的单词,再根据上下文来判断所缺
单词的含义,最后对选项进行区别,选出正确的那一项。
13.阅读短文,从A、B、C、D四个选项中选出最佳选项。
When I was a twelve-year-old newspaper boy, an old lady who was my customer lived near my house. I 1 her name. On a winter afternoon, I was playing with my friend near the old lady's backyard. I found a 2 smooth rock and threw it out, but the stone 3 a small window of her house. Unluckily, I saw the old lady standing behind the window. We knew we were 4 , and ran away quickly. We were scared about that we would 5 and didn't worry about the old lady with the broken window in winter. The next morning, she was 6 greeting me with a smile when I gave her the newspaper. I made up my mind 7 my money to correct my mistake. After three weeks, I had seven dollars. I put the money in an envelope with a note explaining everything and/ hoped that the seven dollars would cover the 8 for repairing the window. I waited until it was dark, and put the letter in her door. The next day, I 9 the old lady her newspaper and she thanked me for it as usual and gave me a bag
of cookies. After eating several cookies, I found an envelope and pulled it out. When I opened it, I
was surprised. Inside were the seven dollars and a short note that said, "I'm proud of you." I smiled in relief. However, I 10 the lesson about forgiveness she taught me.
1. A. will forget B. forgets C. have even forgotten D. would forget
2. A. recently B. perfectly C. easily D. lonely
3. A. hit B. hitting C. hurt D. hurting
4. A. in silence B. in peace C. in need D. in trouble
5. A. help B. catch C. be caught D. be helped
6. A. always B. already C. never D. still
7. A. to save B. saving C. save D. saved
8. A. prize B. price C. pay D. cost
9. A. bought B. handed C. posted D. accepted
10. A. never remember B. shall never remember C. shall never forget D. could forget
【答案】(1)C;(2)B;(3)A;(4)D;(5)C;(6)D;(7)A;(8)D;(9)B;(10)C;
【解析】【分析】主要讲了作者是送报纸男孩时和朋友在老妇人的后院玩耍时不小心把老妇人的窗户打破了,老妇人没有责怪男孩,男孩决定节约钱来还给老妇人,最终老妇人没有要男孩的钱,并且信纸里写着为男孩感到骄傲。
(1)句意:我已经忘记她的名字。A.一般将来时;B.一般现在时;C.现在完成时;D.过去将来时。根据前句可知是作者会议自己12岁时发生的故事,所以现在已经忘记老妇人的名字,所以用现在完成时,故选C。
(2)句意:我发现一块完美地平滑的石头,然后扔了它。A.最近;B.完美地;C.简单地;
D.孤独寂寞的。形容石头是完美光滑的,故选B。
(3)句意:但是石头敲击到了她的房子的一个小窗户。hit敲击;hurt伤害。根据句意可知是石头敲到了窗户,石头是一般过去时,所以用过去式hit,故选A。
(4)句意:我们知道我们处在困境中了。A.沉默;B.安静;C.需要;D.处在困境中。作者把邻居家的窗户打坏了,所以处在困境中了,故选D。
(5)句意:我们害怕我们将被抓住。A.帮助;B.抓住;C.被抓住;D.被帮助。害怕被抓住,主语we是动作catch的承受者,所以用被动语态,结构是be+动词过去分词,catch 的过去分词是caught,would后面用动词原形be,故选C。
(6)句意:第二天早上当我给她报纸时,她仍然带着微笑和我打招呼。A.总是;B.已经;
C.从不;
D.仍然。作者把老妇人的窗户打破了,但是第二天还是和作者打招呼,所以是仍然,故选D。
(7)句意:我下定决心节省钱纠正我的错误。make up one's mind to do sth.下定决心做某事,故选A。
(8)句意:我希望7美元将覆盖修窗户的花费。A.奖品;B.价格;C.支付;D.花费。作者希望7美元是一扇窗户的花费,故选D。
(9)句意:第二天我交给老妇人报纸。A.买;B.上交;C.邮寄;D.接受。作者把报纸交给老妇人,故选B。
(10)句意:然而,我将从不忘记她教给我的原谅的那一课。A.从不记得;B.将从不记
得;C.将从不忘记;D.可能忘记。作者将从没有忘记自己的所得,故选C。
【点评】考查完形填空,首先通读一遍文章,跳过缺失的单词,再根据上下文来判断所缺
单词的含义,最后对选项进行区别,选出正确的那一项。
14.完形填空
Mr. White is a blind man who likes traveling alone. However, as a blind man, he has met a lot of 1 during his trips.
Once Mr. White traveled to Texas. It was his first time to go there. On the plane, he sat next to a woman who 2 Texas. The woman told him that everything was 3 and better in her city. When Mr. White arrived, he found a 4 and decided to spend the night there.
After dinner, Mr. White went to a wine bar(酒吧) and ordered a glass of wine. When the waiter brought him one, he was 5 ." Wow!How big!" he said. Mr. White doesn't drink often, 6 he was a little drunk (喝醉) after drinking the wine. He wanted to go to the restroom, so he asked another waiter for 7 . "Turn right at the information desk and it is the second door on the right," said the waiter.
When Mr. White walked past the first door, he fell down. He missed(错过)the 8 and went towards the third door instead. Not realizing that he had entered the swimming area, he walked forward and then 9 into the swimming pool. At that time he 10 that everything there was bigger. "Don't flush(冲洗)! Don't flush!" he shouted as soon as he got his head above water.
1. A. animals B. troubles C. strangers D. visitors
2. A. came from B. heard from C. looked at D. arrived at
3. A. smaller B. newer C. older D. bigger
4. A. museum B. restaurant C. hotel D. supermarket
5. A. nervous B. surprised C. upset D. bored
6. A. although B. until C. or D. so
7. A. addresses B. directions C. orders D. suggestions
8. A. second B. third C. fourth D. fifth
9. A. got B. turned C. fell D. jumped
10. A. remembered B. dreamed C. discovered D. hoped
【答案】(1)B;(2)A;(3)D;(4)C;(5)B;(6)D;(7)B;(8)A;(9)C;(10)A;
【解析】【分析】文章大意:短文介绍了盲人怀特去德克萨斯旅行时发生的有趣的事。
(1)句意:然而,作为一个盲人,他在旅行中遇到了很多麻烦。A.动物;B.麻烦;C.陌生人;D.拜访者。根据下文的陈述可知他在旅行中遇到了麻烦,故答案是B。
(2)句意:在飞机上,他挨着一个来自德克萨斯的女士坐着。A.来自;B.收到某人的来信;C.看;D.到达。句子为定语从句,关系代词是人,宾语是地点,根据下一句in her city.
可知,她来自德克萨斯,故答案是A。
(3)句意:这位妇女告诉他她的城市更大更好。A.更小;B.更新;C.更旧;D.更大。根据
How big!可知,女士说她的城市更大,故答案是D。
(4)句意:当怀特先生到达的时候,他发现了一个旅馆,并决定在那里住一晚。A.博物馆;B.饭店;C.旅馆;D.超市。根据decided to spend the night there.可知他决定在那里住一晚,可知是见到了一个旅馆,故答案是C。。
(5)句意:当服务员给他带来一杯酒的时候,他很吃惊。A.紧张;B.吃惊的;C.不高兴的;D.无聊的。根据Wow!How big!"可知,他感觉到酒杯是这么大,所以他很吃惊,故答案是B。
(6)句意:怀特先生不经常喝酒,因此喝完这杯酒之后有点醉了。A.尽管;B.直到;C.或者;D.因此。根据Mr. White doesn't drink often,可知他不经常喝酒,再加上前文的叙述酒杯那么大,所以喝完后就有点醉了,两句之间是因果关系,使用so引出结果,故答案是D。
(7)句意:他想去休息室,于是让另一个服务员给他引路。A.地址;B.方向;C.定制;D.建议。怀特是一个盲人,所以他需要服务员给他指引方向,故答案是B。
(8)句意:他错过了第二个门,直接走向第三个门。A.第二;B.第三;C.第四;D.第五。根据Mr. White walked past the first door可知他走过了第一个门,根据went towards the third door instead可知他反而走向了第三个门,说明他把第二个门错过了,应使用second,故答案是A。
(9)句意:没有意识到他走进了游泳区域,他直接往前走,就掉进了游泳池里。A.到达;B.转向;C.掉下;D.跳,根据前文的陈述可知他走进了游泳区域,再加上它是盲人,看不到游泳池,一致走下去,所以就点进去了,fall into掉进……里,故答案是C。
(10)句意:那时他记着一切都很大。A.记着;B.梦想;C.发现;D.希望。根据短文内容可知,来自德克萨斯的女士告诉他这里的一起都很大,他当时还记着,故答案是A。
【点评】考查词汇在篇章中的运用能力,答题时首先要跳过空格通读文章掌握其大意,然后细读文章字斟句酌逐一作答,注意考虑句型、语法、搭配、语境等因素。最后通读一遍检查验证。
15.完形填空
English is important in our society. Different people have 1 ideas on how to learn English well. Some think you must learn grammar well 2 you want to learn English well. Others believe that you can't learn English well unless you 3 as many English words as possible.
As for me, I don't think so. Grammar rules, new words and phrases are very important, but they are not 4 . You still need to learn something else, or you cannot be good at English. For example, many of my classmates 5 grammar. They have learned a lot of English words and phrases by heart, yet they can't express 6 in English when they meet foreign friends. So I think the best way to learn English well is to learn and 7 English all the time. Don't be afraid to make mistakes and be 8 . Unless you keep practicing it again and again, you can't learn it well. That means we'd better practice listening, speaking, reading and writing as much as possible. What's more, if we can form the habit of thinking and writing 9 English all day, we are sure to learn English well.
What's your opinion? Do you have any ideas on this topic? Please 10 us and give us your advice.
1. A. same B. different C. interesting D. surprising
2. A. if B. though C. because D. until
3. A. remember B. meet C. realize D. forget
4. A. good B. easy C. enough D. bad
5. A. are good at B. are born with C. are poor in D. are worried about
6. A. ourselves B. yourselves C. themselves D. itself
7. A. listen B. read C. speak D. use
8. A. looked after B. laughed at C. taken away D. dressed up
9. A. on B. to C. with D. in
10. A. think of B. lay out C. put on D. write to
【答案】(1)B;(2)A;(3)A;(4)C;(5)A;(6)C;(7)D;(8)B;(9)D;(10)D;
【解析】【分析】文章大意:英语在生活中很重要,有人认为学习单词重要,作者认为单词,语法和短语都很重要,但是并不够,必须要使用英语,用英语思考,用英语写作。(1)句意:关于英语学好,不同的人有不同的观点。A.相同的;B.不同的;C.有趣的;D 令人吃惊的。根据下面的陈述可知,不同的人有不同的观点,应使用different,故答案是B。
(2)句意:一些人认为如果你想学好英语,你必须学好语法。A.如果;B.尽管;C.因为;
D.直到。设空的前后句构成的是条件关系,应使用if构成条件状语从句,故答案是A。(3)句意:其他人相信,除非你记住尽可能多的单词,否则你不会学好英语。A.记住;B.见面;C.意识到;D.忘记,根据as many English words as possible.可知是尽可能多的记住单词,故答案是A。
(4)句意:语法规则、生词和短语都很重要,但是这些并不够。A.好的;B.容易的;C.足够的;D.坏的,根据下文的叙述可知,除了这些之外还需要学习其他知识,所以语法。生词和短语这些并不够,故答案是C。
(5)句意:例如,我的许多同学擅长语法。A.擅长;B.天生;C.在……弱;D.担心,此处是用学好语法却不能表达自己做例子,说明擅长语法,不一定能学好英语。故答案是A。(6)句意:然而,当他们遇到外国人的时候,他们不能英语表达自己。A.我们自己;B.你们自己;C.他们自己;D.它自己。反身代词往往和主语是一致的,主语是they,所以反身代词为themselves,故答案是C。
(7)句意:因此我认为学好英语最好的方法是学英语用英语。A.听;B.读;C.说;D.使用,语言是一种工具,只有使用才能够掌握,故答案是D。
(8)句意:不要怕出错,不要怕被嘲笑。A.照看;B.嘲笑;C.拿走;D.打扮,因为说错了别人会嘲笑,所以就不敢说了,所以不要怕别人嘲笑。故答案是B。
(9)句意:而且,如果我们能养成用英语思和写作的习惯,我们一定会学好英语,A.在……上;B.表示动作方向;C.带有,D.在……里,使用。用某种语言使用介词in,故答案是D。
(10)句意:请给我们写信给我们你的建议。A.想起;B.铺开;C.穿上;D.给某人写,write to sb.给某人写信,固定短语,故答案是D。
【点评】考查词汇在篇章中的运用能力,答题时首先要跳过空格通读文章掌握其大意,然
后细读文章字斟句酌逐一作答,注意考虑句型、语法、搭配、语境等因素。最后通读一遍
检查验证。
16.Choose the best answer and complete the passage(选择最恰当的选项完成短文)
This month, we had the honor of interviewing and six local change-makers aged from 11 to 17. These weren't stopped by their age or size or lack of resources, they saw a 1 in the world around them and to step help where they could. They support female soldiers raise money through their efforts, teach other kids about life lessons, and use their free time to 2 the
old trees we love so dearly in the community. Each of them had adults in their lives encouraging and supporting their work.
We were also honored to interview a famous writer for his new book, Start Now! You Can Be a Change-maker. The book explains some of the world's big problems-hunger, health and animals
in danger-in a way that young children can understand. The book shows them, through other kids' stories, how they can make a 3 , too. In our interview with the writer, he shares that each time his children take a small action, such as recycling, he talks with them. He uses the moment to discuss how small changes can achieve a great effect. It's a step any of us can take to help children realize how 4 they are.
At this time of year, we often hear lots of questions from parents. The most 5 one is, "What volunteer chances are there for yo ung children under 16?”The kids in the interview and in
the book show us that parents don't have to find an organized event for their kids to take part in. They can create their own chances. As parents, teachers, aunts, uncles, and friends, it's our job to 6 for what speaks to a child's heart, help them take that first step, and watch what their little hands can do.
Start now, and you can raise a change-maker.
Editor of PARENTS Magazine
1. A. sign B. need C. reason D. change
2. A. worry about B. climb up C. care for D. cut down
3. A. plan B. mistake C. decision D. difference
4. A. powerful B. generous C. happy D. confident
第五章相交线与平行线单元试卷综合测试卷(word含答案)
第五章相交线与平行线单元试卷综合测试卷(word 含答案) 一、选择题 1.如图,AB ∥CD ∥EF ,AF ∥CG ,则图中与∠A (不包括∠A )相等的角有( ) A .5个 B .4个 C .3个 D .2个 2.如图,要得到AB ∥CD ,只需要添加一个条件,这个条件不可以... 是( ) A .∠1=∠3 B .∠B +∠BCD =180° C .∠2=∠4 D .∠D +∠BAD =180° 3.如图,ABC 的角平分线CD 、BE 相交于F ,90A ∠=?,//EG BC ,且CG EG ⊥于G ,下列结论:①2CEG DCB ∠=∠;②CA 平分BCG ∠;③ADC GCD ∠=∠;④1 2 DFB CGE ∠= ∠.其中正确的结论是( ) A .①③④ B .①②③ C .②④ D .①③ 4.已知两个角的两边两两互相平行,则这两个角的关系是( ) A .相等 B .互补 C .相等或互补 D .相等且互补 5.已知:点A ,B ,C 在同一条直线上,点M 、N 分别是AB 、BC 的中点,如果AB =10cm ,AC =8cm ,那么线段MN 的长度为( ) A .6cm B .9cm C .3cm 或6cm D .1cm 或9cm 6.下列命题中,假命题是( ) A .对顶角相等 B .同角的余角相等 C .面积相等的两个三角形全等 D .平行于同一条直线的两直线平行 7.如图,直线1 2l l ,130∠=?,则23∠+∠=( ) A .150° B .180° C .210° D .240°
8.如图,下列条件中,不能判断直线a ∥b 的是( ) A .∠1=∠3 B .∠2=∠3 C .∠4=∠5 D .∠2+∠4=180° 9.如图,直线a 和直线b 被直线c 所载,且a//b ,∠2=110°,则∠3=70°,下面推理过程错 误的是( ) A .因为a//b ,所以∠2=∠6=110°,又∠3+∠6=180°(邻补角定义) 所以∠3=180?-∠6=180?-110?=70? B . //,13,12180a b ?∴∠=∠∠+∠= 1180218011070????∴∠=-∠=-= 所以370?∠= C .因为a//b 所以25∠=∠又∠3+∠5=180°(邻补角定义), 3180518011070????∴∠=-∠=-= D .//,42110a b ?∴∠=∠=,43180?∠+∠=,∴∠3=180°?∠4=180°?110°=70° 所以 3180418011070????∠=-∠=-= 10.如图,直线12l l //,被直线3l 、4l 所截,并且34l l ⊥,144∠=,则2∠等于( ) A .56° B .36° C .44° D .46° 11.下列命题是真命题的有( )个 ①对顶角相等,邻补角互补 ②两条直线被第三条直线所截,同位角的平分线平行 ③垂直于同一条直线的两条直线互相平行 ④过一点有且只有一条直线与已知直线平行 A .0 B .1 C .2 D .3
人教版七年级上册数:第二章《整式的加减》章末检测卷
第二章检测卷 一、选择题(每小题3分,共30分) 1.下列式子中,是单项式的是() A.x+y 2 B.- 1 2x 3yz2 C. 5 x D.x-y 2.在下列单项式中,与2xy是同类项的是() A.2x2y2 B.3y C.xy D.4x 3.多项式4xy2-3xy3+12的次数为() A.3 B.4 C.6 D.7 4.下面计算正确的是() A.6a-5a=1 B.a+2a2=3a2 C.-(a-b)=-a+b D.2(a+b)=2a+b 5.如图所示,三角尺的面积为() A.ab-r2 B.1 2ab-r 2 C.1 2ab-πr 2 D.ab 6.已知一个三角形的周长是3m-n,其中两边长的和为m+n-4,则这个三角形的第三边的长为() A.2m-4 B.2m-2n-4 C.2m-2n+4 D.4m-2n+4 7.已知P=-2a-1,Q=a+1且2P-Q=0,则a的值为() A.2 B.1 C.-0.6 D.-1 8.甲、乙、丙三家超市为了促销一种定价相同的商品,甲超市先降价20%,后又降价10%;乙超市连续两次降价15%;丙超市一次性降价30%.则顾客到