21世纪大学英语第二册Unit1整理

21世纪大学英语应用型综合教程2 1-5单元课后答案（完整版）Unit 11.In the six-and-one half years sincet the federal government beagan certifying food as “organic,”Americans have taken to the idea with considerable enthusiasm.自联邦政府六年半前认证“有机”食品以来，美国人以极大的热情接受了这一概念。

2.To eat well, says Michael Pollanthe,the author of"In Defense of Food,"means avoiding "edible food_like substances"and sticking to real ingredients,increasingly from theplant Kingdom. “吃得好”，《食物无罪》的作者迈克尔波轮说，“意味着避免摄入‘可食用的类似的物质’，并坚持从蔬菜中获取真正营养成分的原则。

3.Neither the enabling legislation nor the regulations address food safety or nutrition. 不论有机食品的立法或是法规都未涉及食品安全或是营养问题.4.Professor Howard that major corporations now are responsible for at least 25 perceent of all organic manufacturing and marketing. 霍华德教授估计，大公司现在承担了至少25%的有机食品生产和销售。

5.Popularizing such choices may not be as marketable as creating a logo that says"organic" . 推广这样的做法可能不会像设计一个“有机”的标志那么有市场.1. It is more difficult topopularize education(普及教育)in the rural areas than in the urban areas.2. Every country must stick toits own path（坚持自己的道路）.3. I made clear to him that he should be responsible for the accident(为这次意外负责).4. He neither knows nor cares(既不知道也不关心) what happened.5. Many parents expressed concern about(表达了担忧)their children’s Internet addiction.Unit 21. The two former elephant trainers had seen enough abuse and neglect at circuses and zoos to inspire them to create a sanctuary where elephants could live out their lives. 这两位前驯象员在马戏团和动物园见过太多大象所遭受的虐待和忽视，于是决心为大象建立一座可以颐养天年的憩息所.2. Soon Hohenwald was rockingas the two greeted each other with ttrumpeting and celebratory bumping.不一会儿，霍恩沃尔德因他们相遇时互致问候的吼声和庆祝性的碰撞而震动起来3. Shirley and Jenny instantly fell into their old routine,wandering the sanctuary side by side.雪莉和詹妮很快恢复了她们的老习惯：肩并肩地在保护区内闲逛.4. At one point, the four spent therr hours trumpeting----the vibrations felt by evey living being in the sanctuary.有一次，四头大象持续三小时的鸣吼使保护区内的每个生命都为之震颤。

Unit 1误会佚名他头发蓬乱，衣着肮脏，口袋里只有35美分。

在马里兰州的巴尔的摩，他登上一辆公共汽车并径直走向了洗手间。

他想如果他躲在洗手间里，便可以不付钱就乘车去纽约。

但是坐在公共汽车后面的一位乘客看见了他。

她拍了拍她前面那位乘客的肩膀说：“洗手间里有个流浪汉。

告诉公共汽车司机。

”那位乘客轻轻地拍了一下坐在他前面的人，说道：“告诉公共汽车司机，洗手间里有个流浪汉。

这口信通过一个又一个的乘客传到了公共汽车的前边。

但在这一过程的某个环节，口信变了。

当它传到公共汽车司机那儿时，已经不是“洗手间里有个流浪汉”，而是“洗手间里有颗炸弹”。

司机马上在公路边停下车来并用无线电通知了警察。

当警察到达时，他们让乘客下车并且远离汽车。

然后他们关闭了那条公路。

那很快就造成了15英里长的交通堵塞。

警察在警犬的帮助下，在公共汽车上搜查了两个小时。

当然，他们没有发现什么炸弹。

两个发音相似的英语单词给一个想从洛杉矶飞往加利福尼亚州奥克兰的人也造成了麻烦。

他的问题始于洛杉矶机场。

他以为听到广播中宣布了他的航班，所以他走向登机门，出示了机票并登上了飞机。

起飞20分钟后，这人开始担心起来。

奥克兰在洛杉矶的北边，但是飞机似乎正在向西飞，而当他向窗外望去时，他所能看到的全是大海。

“这架飞机是去奥克兰吗?”他问航班服务员。

航班服务员倒抽了一口冷气，“不，”她说。

“我们去奥克兰——新西兰的奥克兰。

”因为有这么多英文单词发音相似，讲英语者之间的误会并不罕见。

并非所有的误会都会导致公路关闭或乘客飞错大陆。

大多数误会远没有这么严重。

每天讲英语的人会相互问这样的问题:“你是说七十还是十七?”“你是说你能来还是不能来?”发音相似的单词对把英语作为第二语言的人来说，特别容易让人混淆。

一天早晨，一位生活在美国的韩国妇女到上班地点时，她的老板问她：“你拿到盘子了吗?” “没有……”她回答说，心里却在纳闷，不知道他到底是什么意思。

她在办公室工作。

老板为什么问她盘子的事呢？一整天她都对老板的怪问题感到纳闷，但又不好意思开口问他。

Unit15．1. George is a smart boy; he is one of the best students in his class.2. You have to work hard if you want succeed in your courses.3.Shortly after you left, a girl came into our office looking for you.4. At first, the course was a bit difficult for me but I managed to pass the final exam with a fairly good grade.5. Mary is my best friend and I always share my secrets（秘密）with her.9. Children in China enter school at the age of 6 or 7 and must study there for at least nine years.10. The earth is surrounded by air, which makes up its atmosphere (大气层).9、1. 约翰既聪明又有责任心。

他喜欢跟别人交朋友。

John is both smart and responsible. He likes to make friends with other people.2. 我已经决定竞争这个新岗位。

你也可以竞争。

你自己决定吧。

I have made the decision to compete for the new post. You can compete for it, too.10、1、I had to set a study program if Iwangted to succeed in my courses. 如果我想在学业上取得成功，我必须制定一个学习计划。

Unit1老伴60多岁中风去世时，那位72岁的退休教授不胜悲痛。

无人依靠的生活对他来说将是非常困难的。

When his wife died of a stroke in her sixties, the 72-year-old retired professor was overwhelmed by grief. Life would be too difficult for him without anybody to rely on.两位业余画家上个月在伦敦举办了一次个人画展。

许多人前去参观，其中包括一些著名的专业画家。

Last month two amateur painters held an exhibition of their pictures in London. Many people went to see it, including a few celebrated professionals.当20世纪80年代中期，7名宇航员在“挑战者”号的灾难中遇到困难时，全世界一下子陷入了震惊与悲痛之中。

When seven astronauts died in the Challenger disaster in the mid-1980s, it plunged the whole world into shock and grief.在结束了其第二届首相任期之后，她仍积极参与政治事务。

当政府遇到困难时，她屡次前来帮忙。

After completing her second prime ministry, she remained actively involved in political affairs. She came to the rescue several times when the government was in difficulty.大选失败之后，史密斯博士隐退到一个小村庄，在那里尝试工作。

21世纪大学英语读写教程第2册全文Unit 1 My HometownPart 1 Listening PracticeExercise 1Track 1-1Instructions: You will hear a conversation between two friends, talking about their hometowns. Listen carefully and answer the following questions.1.Where is Mary’s hometown?2.What is the population of Mary’s hometown?3.How long does it take to get to Mary’s hometownfrom the city?4.What is the local specialty in Mary’s hometown?5.What does Mary recommend the listener do if theyvisit her hometown?Exercise 2Track 1-2Instructions: You will hear a monologue about a famous city. Listen carefully and complete the sentences with the missing information.1.The city is known for its _______ architecture.2.The city has _______ districts.3.The city’s most famous attraction is _______.4.Visitors can enjoy _______ performances in the city.5.The speaker recommends visiting _______ for abeautiful view of the city.Part 2 SpeakingExercise 1Instructions: Work in pairs. Answer the following questions about your hometown, using the prompts given.1.Where is your hometown?2.What is the population of your hometown?3.How long does it take to get to your hometown fromthe city?4.What is the local specialty in your hometown?5.What do you recommend visitors to do if they visityour hometown?Exercise 2Instructions: In pairs, discuss the following questions abouta famous city.1.Which city would you like to visit? Why?2.What do you know about the city?3.What attractions does the city have?4.What activities would you like to do in the city?5.What would you recommend others to do if theyvisit the city?Part 3 ReadingPassage 1Instructions: Read the following passage about the history of London and answer the questions that follow.London, the capital city of England, has a rich history dating back to Roman times. The city was founded by the Romans in AD 43 and was originally called Londinium. It quickly became an important trading port and grew in prosperity.During the Middle Ages, London saw significant growth and became the largest city in England. It played a major role in the development of the British Empire and was a center of political, economic, and cultural power.Today, London is a global city and a major tourist destination. It is known for its iconic landmarks such as the Tower of London, Buckingham Palace, and the British Museum. Visitors can also enjoy world-class shopping, theaters, and cuisine.1.When was London founded by the Romans?2.What was London originally called?3.What role did London play during the Middle Ages?4.What are some famous landmarks in London?Passage 2Instructions: Read the following passage about a famous city in Asia and answer the questions that follow.Tokyo, the capital city of Japan, is a modern metropolis with a unique blend of traditional and contemporary culture. The city is known for its bustling streets, futuristic technology, and vibrant entertainment industry.Tokyo has a rich history and was originally a small fishing village called Edo. It became the capital of Japan in 1868 andgrew rapidly during the Meiji period, when Japan opened up to the world.Today, Tokyo is one of the most populous cities in the world and a major economic and cultural hub. It is home to various attractions such as the Tokyo Tower, Imperial Palace, and Shibuya Crossing. Visitors can also experience traditional Japanese culture by visiting temples, enjoying Japanese cuisine, and witnessing traditional performances.1.What was Tokyo originally called?2.When did Tokyo become the capital of Japan?3.What is Tokyo known for today?4.What are some famous attractions in Tokyo?Unit 2 Environmental ProtectionPart 1 Listening PracticeExercise 1Track 2-1Instructions: You will hear a conversation between a student and a professor, discussing environmental issues. Listen carefully and answer the following questions.1.What is the main topic of the conversation?2.How does climate change affect ecosystems?3.What are some causes of deforestation?4.What are the consequences of air pollution?5.What can individuals do to help protect theenvironment?Exercise 2Track 2-2Instructions: You will hear a monologue about recycling. Listen carefully and complete the sentences with the missing information.1.Recycling helps reduce the _______ of waste.2._______ is a commonly recycled material.3.Recycling _______ helps conserve natural resources.4.The speaker suggests _______ as a way to reducewaste.5.It is important to _______ before recycling materials.Part 2 SpeakingExercise 1Instructions: Work in pairs. Answer the following questions about environmental issues, using the prompts given.1.What environmental issues are you concerned about?2.What are some causes of these issues?3.What are the consequences of these issues?4.What can individuals do to help protect theenvironment?5.How can governments and organizations contributeto environmental protection?Exercise 2Instructions: In pairs, discuss the following questions about recycling.1.How often do you recycle?2.What types of materials do you recycle?3.Why do you think recycling is important?4.Have you ever participated in any recyclingprograms or initiatives?5.What can schools and communities do to promote recycling?。

Unit 1误会佚名他头发蓬乱，衣着肮脏，口袋里只有35美分。

在马里兰州的巴尔的摩，他登上一辆公共汽车并径直走向了洗手间。

他想如果他躲在洗手间里，便可以不付钱就乘车去纽约。

但是坐在公共汽车后面的一位乘客看见了他。

她拍了拍她前面那位乘客的肩膀说：“洗手间里有个流浪汉。

告诉公共汽车司机。

”那位乘客轻轻地拍了一下坐在他前面的人，说道：“告诉公共汽车司机，洗手间里有个流浪汉。

这口信通过一个又一个的乘客传到了公共汽车的前边。

但在这一过程的某个环节，口信变了。

当它传到公共汽车司机那儿时，已经不是“洗手间里有个流浪汉”，而是“洗手间里有颗炸弹”。

司机马上在公路边停下车来并用无线电通知了警察。

当警察到达时，他们让乘客下车并且远离汽车。

然后他们关闭了那条公路。

那很快就造成了15英里长的交通堵塞。

警察在警犬的帮助下，在公共汽车上搜查了两个小时。

当然，他们没有发现什么炸弹。

两个发音相似的英语单词给一个想从洛杉矶飞往加利福尼亚州奥克兰的人也造成了麻烦。

他的问题始于洛杉矶机场。

他以为听到广播中宣布了他的航班，所以他走向登机门，出示了机票并登上了飞机。

起飞20分钟后，这人开始担心起来。

奥克兰在洛杉矶的北边，但是飞机似乎正在向西飞，而当他向窗外望去时，他所能看到的全是大海。

“这架飞机是去奥克兰吗?”他问航班服务员。

航班服务员倒抽了一口冷气，“不，”她说。

“我们去奥克兰——新西兰的奥克兰。

”因为有这么多英文单词发音相似，讲英语者之间的误会并不罕见。

并非所有的误会都会导致公路关闭或乘客飞错大陆。

大多数误会远没有这么严重。

每天讲英语的人会相互问这样的问题:“你是说七十还是十七?”“你是说你能来还是不能来?”发音相似的单词对把英语作为第二语言的人来说，特别容易让人混淆。

一天早晨，一位生活在美国的韩国妇女到上班地点时，她的老板问她：“你拿到盘子了吗?” “没有……”她回答说，心里却在纳闷，不知道他到底是什么意思。

她在办公室工作。

老板为什么问她盘子的事呢？一整天她都对老板的怪问题感到纳闷，但又不好意思开口问他。