第一篇：二級聽力真題答案

1、女的什么意思？ B

2、jack的感覺 cecited3、什么關系 teacher and student4、準備做什么？ 買冰箱

5、下一輛發車時間 11：106、在哪兒？ 在家！

7、先做什么？ 整理房子

8、女的是什么？ 護士

9、讓她做什么？ 讓baby高興

10、對她怎么樣？ 鼓勵

11、打電話是的誰？ 鄰居

12、男的怎么了？ ill13、教授要做什么？ paper14、女的找工作為了什么？ 掙生活費

15、下女的在哪里工作？ shelves16、女的表現怎么樣？ 成績好

17、工作時間？ 8：30—0：1018、有幾條？ 1219、用什么標記？ 顏色

20、迷失方向干什么？ 下站下

拓展閱讀：

PETS 二級考試由筆試試卷和口試試卷組成。

筆試試卷（120分鐘）包括四部分：聽力、英語知識運用、閱讀理解和寫作。

（一）聽力

該部分由A、B兩節組成，考查考生理解英語口語的能力。

（二）英語知識運用

該部分由A、B兩節組成，考查考生對英語語法、詞匯知識和較為簡單表達方式的掌握情況。

（三）閱讀理解

測試考生理解書面英語的能力。

（四）寫作

該部分由A、B兩節組成，考查考生的書面表達能力。

（五）口試

口試分A、B、C三節，測試考生英語口語的交際能力。

另外，公共英語成績、合格標準一般于考后2個半月公布，屆時請廣大考生密切關注考試網，我們會第一時間發布相關信息。

第二篇：雅思聽力真題答案（精選）

SECTION 1

一個女生咨詢住宿homestay事宜。

1.住址：【14 Hill(s)Road】

2.時間：【After 7 pm / Before 9:30 am / after 9.30】 不確定

3.年齡：【19】

4-5.homestay的要求（兩個空）real 【garden】；only one 【guest】

6.英語程度【intermediate】

7.對食物的要求:【vegetarian / vegetable only】

8.最高租房費用Max Rent：【100 pounds per week】開始說60~80后來補充說up to 100

9.注冊日期：【23rd March】

10.愿意住在【northwest】

SECTION

2一次為慈善募捐所作的徒步旅行(charity walking holiday)。6個選擇題，4個填空題。

1.選【B，8天】

2.有個PIE CHART 圖表是問題捐款占總比例，平均選【過一半的那個，有55%-65%吧】 前面有干擾

3.募捐的用途選【A，for student】

4.參加者的要求【VERY FIT】（原文是 extremely fit）

5.可以帶自己的裝備嗎? 因為原文說可以靠LOCAL 單位，所以選【B，是只要帶some of the own things】

6.后面是個表格題，4個填空。

填每天的安排，第三天valley，第五或六天是visit a ancient temple，第八天是swim in a water fall，第九天是。。沒記憶，但不難填，傳統產品等。

7.spend one day on a 【forest】

8.visit ancient 【temple】

9.swimming in 【park lake / waterfall】

10.visit a weaving 【blanket】

SECTION

3一個學生和老師的談話，關于topic，supervisor/department decide，的各個方面的問題的先是6個選擇題；

1.選何種research topic?(選C)

A、是比較POPULAR的；

【C、長時間感興趣的；】

2.如何選老師？

選【學院會給你分配DEPARTMENT ALLOCATE】

3.有個問到選學校的原因，應該

選【C】應該選學校會給你research足夠好支持support的,而不是聲譽或者resource的多少。

4.又是PIE CHART，所有大學的drop-out rate 選【C、60%】；『比50％略多那個。45％只是這個大學的drop-out 率，后面再講平均的，不可能是45％，但A、75％又太高了』

5.有個獲取資料的方法：選【B、上網查】/【talk to a person】{上網查絕對不對，那個教授先就否掉了，然后說可以打

第三篇：2018年二級建造師公路工程真題答案 -

2018年二級建造師公路工程真題答案

（答案來自網絡，考生回憶版本，感謝：工程人的家）

二建公路（答案來自網絡，考生回憶版本）

單選

1-5：DCBAA 6-10：BABCC 11-15：ACCBA 16-20：DBDBC 多選

21ABCE 22ABCE 23BD 24BCE 25CD 26ABD 27ADE 28CD 29CDE 30BCD

公路案例一

1、H邊坡。A截水溝。采用堅硬粗顆粒材料，碎石，礦渣。

2、（1）強夯處理范圍為邊坡腳邊緣不對。正確做法：強夯處理范圍應超出路提坡腳。每邊超出坡腳的寬度不宜小于3M。試夯面積為200平米不對。正確做法：試夯區場地面積不應小于500平米。

（2）施工參數：單機夯擊力，夯擊次數，夯擊遍數，細隙時間等。3：23145786 4：動態觀測項目：沉降和水平位移觀測。施工期間宜按照路提中心線地面沉降速率每晝夜不大于10-15mm，坡腳水平位移速率每晝夜不大于5mm控制路堤穩定性。特殊軟土地基應根據設計要求確定穩定性控制標準。當沉降或位移超過標準時，應立即停止路堤填筑。路面鋪筑必須待沉降穩定后進行。沉降穩定的標準應采用雙標準控制，即推算的工后沉降應小于設計容許值，同時連續2個月觀測每月沉降不超過5mm.公路案例二

1：采用A和B等級的瀝青都可組成。結構屬于：密實/懸浮結構類型。

2：還需要配備的主要施工機械有：雙輪雙振壓路機、膠輪壓路機、瀝青混泥土攪拌設備

3：作業指導書第（1條）不正確，改為下面層攤鋪采用走線法。第（2）條不正確，改為攤鋪機每次攤鋪前，將熨平板加熱至不低于100°。第(3）條正確。第（4）條不正確，攤鋪機無法作業的地方，應在監理工程師同意后，采用人工攤鋪施工。

4：漏項有：厚度、平整度、彎沉值、滲水系數、中線平面偏位、抗滑（含摩擦系數和構造深度）。

5：1#料的用量｛（18÷100）×1000x9.5x2.4÷98%｝x25%=1046.9 水泥用量為｛（18÷100）x1000x9.5x2.4÷98%｝x4.5%=188.45（t）

公路案例三

1、V級圍巖，比選出的施工方法為雙側壁導坑法

2、事件二中必測項目為，洞內外觀察，地表下沉，拱頂下沉，周邊位移。拱頂下沉量測方法為水準測量，工具為水準儀和鋼尺。

3、事件三中的錯誤有采用干噴技術，采用掛模的方式噴射混凝土。隧道噴射混凝土嚴禁掛模噴射。噴射混凝土的實測項目有噴射混凝土強度，噴層厚度，空洞檢測。

4.噴射混凝土前。沒有對巖面清潔。造成殘留黃泥而掉落施工單位應重新鑿除至設計標高。清潔巖面。再按設計要求噴射混凝土。

公路案例四

1、（1）不成立，理由：事件為造成承包人工程項目成本的額外支出。

（2）成立，理由：建設單位未按合同約定要求提供移動模架拼裝場地，造成工期延誤，理應進行索賠。

（3）成立，理由：因建設單位未按合同約定要求提供移動模架拼裝場地造成承包人額外增加垂直提升安裝費用，理應進行索賠。

（4）不成立，理由：第十聯支架攤銷費用本屬于承包人。

（5）成立，理由：因建設單位原因造成第十聯改為支架而損失的模架攤銷費。2：型鋼--A，卸落裝置--D，貝雷片--B。結構形式跨度，承受的荷載大小。3： 1.卸架后上部結構本身及荷載一半所產生的豎向撓杜。2.在荷載作用下的彈性壓縮撓度。3.在荷載作用下的非彈性壓縮撓度。4.在荷載作用下的非彈性沉陷。5.砼收縮及溫度變化而引起的撓度。

4、第4問不正確：

順序：應經施工單位技術部門審核，經施工單位技術負責人及總監理工程師和業主批準后實施，由施工單位安全管理人員現場監督實施。

第四篇：2010年英語專業四級聽力真題答案

2010年英語專業四級聽力真題及答案

PART I

DICTATION

[15 MIN]

Listen to the following passage.Altogether the passage will be read to you four times.During the first reading, which will be done at normal speed, listen and try to understand the meaning.For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds.The last reading will be done at normal speed again and during this time you should check your work.You will then be given 2 minutes to check through your work once more.Please write the whole passage on ANSWER SHEET ONE.PART II

LISTENING COMPREHENSION

[20 MINI In Sections A, B and C you will hear everything ONCE ONLY Listen carefully and then answer the questions that follow.Mark the correct answer to each question on ANSWER SHEET TWO.SECTION A CONVERSATIONS

In this section you will hear several conversations.Listen to the conversations carefully and then answer the questions that follow.Questions 1 to 3 are based on the following conversation.At the end of the conversation, you will be given 15 seconds to answer the questions.Now, listen to the conversation.1.The following details have been checked during the conversation EXCEPT

A.number of travelers.B.number of tour days.C.flight details.D.room services.2.What is included in the price?

A.Air tickets and local transport.B.Local transport and meals.C.Air tickets, local transport and breakfast.D.Air tickets, local transport and all meals.3.Which of the following statements is CORRECT?

A.The traveler is reluctant to buy travel insurance.B.The traveler is ready to buy travel insurance.C.The traveler doesn't have to buy travel insurance.D.Travel insurance is not mentioned in the conversation.Questions 4 to 7 are based on the following conversation.At the end of'the conversation, you will be given 20 seconds to answer the questions.Now, listen to the conversation.4.Which of the following details is CORRECT?

A.Mark knows the exact number of airport buses.B.Mark knows the exact number of delegates' spouse.C.Mark doesn't know the exact number of delegates yet.D.Mark doesn't know the number of guest speakers.5.What does Linda want to know?

A.The arrival time of guest speakers.B.The departure time of guest speakers.C.The type of transport for guest speakers.D.The number of guest speakers.6.How many performances have been planned tbr the conference?

A.One.B.Two.C.Three.D.Not mentioned.7.Who will pay for the piano performance?

A.Pan-Pacific Tours.B.Johnson & Sons Events.C.Conference delegates.D.An airline company.Questions 8 to 10 are based on the following conversation.At the end of'the conversation, you will be given 15 seconds to answer the questions.Now listen to the conversation.8.What is NOT missing in Mary's briefcase?

A.Her cheque book.B.Her papers for work.C.Her laptop.D.Her appointment book.9.Where was Mary the whole morning?

A.At the police station.B.At a meeting.C.In her client's office.D.In the restaurant.10.Why was Mary sure that the briefcase was hers in the end?

A.The papers inside had the company's name.B.The briefcase was found in the restaurant.C.The restaurant manager telephoned James.D.The cheque book inside bore her name.SECTION B PASSAGES In this section, you will hear several passages.Listen to the passages carefully and then answer the questions that follow.Questions 11 to 13 are based on the following passage.At the end of the passage, yott will be given 15 seconds to answer the questions.Now, listen to the passage.11.We learn from the passage that about two-thirds of the courses are taught through

A.the School of Design and Visual Arts.B.the School of Social Work.C.the School of Business.D.the Arts and Sciences program.12.What is the cost of undergraduate tuition?

A.Twenty thousand dollars.B.Thirty thousand dollars.C.Twenty-seven thousand dollars.D.Thirty-eight thousand dollars.13.International students can receive all the following types of financial assistance EXCEPT

A.federal loans.B.private loans.C.scholarships.D.monthly payment plans.ass=MsoNormal>

Questions 14 to 17 are based on the following passage.At the end of the passage, you will be given 20 seconds to answer the questions.Now, listen to the passage.14.According to the passage, mothers in ____ spend more time looking after children.A.France

B.America

C.Denmark

D.Australia 15.Which of the following activities would Australian fathers traditionally participate in?

A.Feeding and playing with children.B.Feeding and bathing children.C.Taking children to the park and to school.D.Taking children to watch sports events.16.According to the study, the “new man” likes to

A.spend more time at work.B.spend more time with children.C.spend time drinking after work.D.spend time on his computer.17.It is suggested in the passage that the “new man” might be less acceptable in

A.France.B.Britain.C.Australia.D.Denmark.Questions 18 to 20 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions.Now, listen to the passage.18.The services of the new partnership are provided mainly to

A.mothers of infected babies.B.infected children and women.C.infected children in cities.D.infected women in cities.19.Which of the following details about Family Health International is INCORRECT?

A.It is a nonprofit organization.B.It provides public health services.C.It carries out research on public health.D.It has worked in five countries till now.20.The example of Cambodia mainly shows

A.the importance of government support.B.the importance of public education efforts.C.the progress the country has made so far.D.the methods used to fight AIDS.SECTION C NEWS BROADCAST In this section, you will hear several news items.Listen to them carefully and then answer the questions that follow.Questions 21 and 22 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions.Now.listen to the news.21.According to the news, the victim was

A.a 17-year-old girl.B.a 15-year-old boy.C.a 23-year-old woman.D.an l 8-year-old man.22.We learn from the news that the suspects were arrested

A.one month later.B.two months later.C.immediately.D.two weeks later.Questions 23 and 24 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions.Now, listen to the news.23.The Iraqi par

liament can vote on the security agreement only after

A.all parties have agreed on it.B.the US troops have pulled out.C.the cabinet has reviewed it.D.the lawmakers have returned from Mecca.24.According to the news, the US troops are expected to completely pull out by

A.mid-2009.B.the end of 2009.C.mid-2011.D.the end of 2011.Questions 25 and 26 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions.Now, listen to the news.25.The following are involved in the operations to rescue the children in Honduras EXCEPT

A.the police.B.the district attorney.C.the prison authorities.D.Institute of Childhood and Family.26.What punishment would parents face if they allowed their children to beg?

A.To be imprisoned and fined.B.To have their children taken away.C.To be handed over to the authorities.D.None.Question 27 is based on the following news.At the end of the news item.you will be given 5 seconds to answer the question.Now, listen to the news.27.What is the news item about?

A.Coastlines in Italy.B.Public use of the beach.C.Swimming and bathing.D.Private bathing clubs.Question 28 is based on the following news.At the end of the news item, you will be given 5 seconds to answer the question.Now, listen to the news.28.Which of the following is NOT mentioned in the news?

A.The airport was shut down for Friday.B.There was a road accident involving two buses.C.Local shops were closed earlier than usual.D.Bus service was stopped for Friday.Questions 29 and 30 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions.Now, listen to the news.29.How many people were rescued from the apartment building?

A.17.B.24.C.21.D.41.30.Which of the following details in the news is CORRECT?

A.The rescue operation involved many people.B.The cause of the explosions has been determined.C.Rescue efforts were stopped on Thursday.D.The explosions didn't destroy the building.2010年英語專業四級真題答案

The UK has a well-respected higher education system and some of the top universities and research institutions in the world.But to those who are new to it all, it can be overwhelming and sometimes confusing.October is usually the busiest month in the academic calendar.Universities have something called Freshers' Week for their newcomers.It's a great opportunity to make new friends, join lots of clubs and settle into university life.However, having just left the comfort of home and all your friends behind, the prospect of meeting lots of strangers in big halls can be nerve-wracking.Where do you start? Who should you make friends with? Which clubs should you join?

Luckily, there will be thousands of others in the same boat as you worrying about starting their university social life on the right foot.So just take it all in slowly.Don't rush into anything that you'll regret for the next three years.1-5 DDACA

6-10 BDCCD

11-15DBADD

16-20BCBDA 21-25CBADC

26-30ABACA

第五篇：四級聽力真題答案解析

真題，是指真正在省級以上測試中出現過的原題，多出現在考試資料、練習冊中，歷年真題都是上述思想的真實體現，下面是小編收集推薦的四級聽力真題，僅供參考，歡迎閱讀。

2018年6月英語四級聽力真題

Section A

Directions: In this section, you will hear three news reports.At the end of each news report, you will hear two or three questions.Both the news report and the questions will be spoken only once.After you hear a question, you must choose the best answer from the four choices marked A), B), C)and D).Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 1 and 2 are based on the news report you have just heard.1.A)The return of a bottled message to its owner's daughter.B)A New Hampshire man's joke with friends on his wife.C)A father's message for his daughter.D)The history of a century-old motel.2.A)She wanted to show gratitude for his kindness.B)She wanted to honor her father's promise.C)She had been asked by her father to do so.D)She was excited to see her father's handwriting.Questions 3 and 4 are based on the news report you have just heard.3.A)People were concerned about the number of bees.B)Several cases of Zika disease had been identified.C)Two million bees were infected with disease.D)Zika virus had destroyed some bee farms.4.A)It apologized to its customers.B)It was forced to kill its bees.C)It lost a huge stock of bees.D)It lost 2.5 million dollars.Questions 5 to 7 are based on the news report you have just heard.5.A)It stayed in the air for about two hours.B)It took off and landed on a football field.C)It proved to be of high commercial value.D)It made a series of sharp turns in the sky.6.A)Engineering problems.B)The air pollution it produced.C)Inadequate funding.D)The opposition from the military.7.A)It uses the latest aviation technology.B)It flies faster than a commercial jet.C)It is a safer means of transportation.D)It is more environmentally friendly.Section B

Directions: In this section, you will hear two long conversations.At the end of each conversation, you will hear four questions.Both the conversation and the questions will be spoken only once.After you hear a question, you must choose the best answer from the four choices marked A), B), C)and D).Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard.8.A)It seems a depressing topic.B)It sounds quite alarming.C)It has little impact on our daily life.D)It is getting more serious these days.9.A)The man doesn't understand Spanish.B)The woman doesn't really like dancing.C)They don't want something too noisy.D)They can't make it to the theatre in time.10.A)It would be more fun without Mr.Whitehead hosting.B)It has too many acts to hold the audience's attention.C)It is the most amusing show he has ever watched.D)It is a show inappropriate for a night of charity.11.A)Watch a comedy.B)Go and see the dance.C)Book the tickets online.D)See a film with the man.Questions 12 to 15 are based on the conversation you have just heard.12.A)Most of her schoolmates are younger than she is.B)She simply has no idea what school to transfer to.C)There are too many activities for her to cope with.D)She worries she won't fit in as a transfer student.13.A)Seek advice from senior students.B)Pick up some meaningful hobbies.C)Participate in after-school activities.D)Look into what the school offers.14.A)Give her help whenever she needs it.B)Accept her as a transfer student.C)Find her accommodation on campus.D)Introduce her to her roommates.15.A)She has interests similar to Mr.Lee's.B)She has become friends with Catherine.C)She has chosen the major Catherine has.D)She has just transferred to the college.Section C

Directions: In this section, you will hear three passages.At the end of each passage, you will hear three or four questions.Both the passage and the questions will be spoken only once.After you hear a question, you must choose the best answer from the four choices marked A), B), C)and D).Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard.16.A)To investigate how being overweight impacts on health.B)To find out which physical drive is the most powerful.C)To discover what most mice like to eat.D)To determine what feelings mice have.17.A)When they are hungry.B)When they are thirsty.C)When they smell food.D)When they want company.18.A)They search for food in groups.B)They are overweight when food is plenty.C)They prefer to be with other mice.D)They enjoy the company of other animals.Questions 19 to 21 are based on the passage you have just heard.19.A)Its construction started before World War I.B)Its construction cost more than $ 40 billion.C)It is efficiently used for transport.D)It is one of the best in the world.20.A)To improve transportation in the countryside.B)To move troops quickly from place to place.C)To enable people to travel at a higher speed.D)To speed up the transportation of goods.21.A)In the 1970s.B)In the 1960s.C)In the 1950s.D)In the 1940s.Questions 22 to 25 are based on the passage you have just heard.22.A)Chatting while driving.B)Messaging while driving.C)Driving under age.D)Speeding on highways.23.A)A gadget to hold a phone on the steering wheel.B)A gadget to charge the phone in a car.C)A device to control the speed of a vehicle.D)A device to ensure people drive with both hands.24.A)The car keeps flashing its headlights.B)The car slows down gradually to a halt.C)They are alerted with a light and a sound.D)They get a warning on their smart phone.25.A)Installing a camera.B)Using a connected app.C)Checking their emails.D)Keeping a daily record.答案

1.A)The return of a bottled message to its owner's daughter.2.B)She wanted to honor her father's promise.3.B)Several cases of Zika disease had been identified.4.C)It lost a huge stock of bees.5.A)It stayed in the air for about two hours.6.C)Inadequate funding.7.D)It is more environmentally friendly.8.A)It seems a depressing topic.9.D)They can't make it to the theatre in time.10.C)It is the most amusing show he has ever watched.11.B)Go and see the dance.12.D)She worries she won't fit in as a transfer student.13.C)Participate in after-school activities.14.A)Give her help whenever she needs it.15.D)She has just transferred to the college.16.B)To find out which physical drive is the most powerful.17.A)When they are hungry.18.C)They prefer to be with other mice.19.D)It is one of the best in the world.20.B)To move troops quickly from place to place.21.A)In the 1970s.22.B)Messaging while driving.23.D)A device to ensure people drive with both hands.24.C)They are alerted with a light and a sound.25.B)Using a connected app.2019年6月英語四級聽力真題

Section A News Report

Directions： In this section，you will hear three news reports。At the end of each news report，you will hear two or three questions。Both the news report and the questions will be spoken only once。After you hear a question，you must choose the best answer from the four choices marked A），B），C）and D）。Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre。

Questions 1 and 2 are based on the news report you have just heard.1.A)He set a record by swimming to and from an island.B)He celebrated his ninth birthday on a small island.C)He visited a prison located on a faraway island.D)He swam around an island near San Francisco.2.A)He doubled the reward.B)He cheered him on all the way.C)He set him an example.D)He had the event covered on TV.Questions 3 and 4 are based on the news report you have just heard.3.A)To end the one-child policy.B)To encourage late marriage.C)To increase working efficiency.D)To give people more time to travel.4.A)They will not be welcomed by young people.B)They will help to popularize early marriage.C)They will boost China's economic growth.D)They will not come into immediate effect.Questions 5 to 7 are based on the news report you have just heard.5.A)Cleaning service in great demand all over the world.B)Two ladies giving up well-paid jobs to do cleaning.C)A new company to clean up the mess after parties.D)Cleaners gainfully employed at nights and weekends.6.A)It takes a lot of time to prepare.B)It leaves the house in a mess.C)It makes party goers exhausted.D)It creates noise and misconduct.7.A)Hire an Australian lawyer.B)Visit the U.S.and Canada.C)Settle a legal dispute.D)Expand their business.Section B Conversation

Directions： In this section，you will hear two long conversations。At the end of each conversations you will hear four questions。Both the conversations and the question-s will be spoken only once。After you hear a question。You must choose the best answer from the four choices marked A），B），C）and D）。Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard.8.A)He had a driving lesson.B)He got his driver's license.C)He took the driver's theory exam.D)He passed the driver's road test.9.A)He was not well prepared.B)He did not get to the exam in time.C)He was not used to the test format.D)He did not follow the test procedure.10.A)They are tough.B)They are costly.C)They are helpful.D)They are too short.11.A)Pass his road test the first time.B)Test-drive a few times on highways.C)Find an experienced driving instructor.D)Earn enough money for driving lessons.Questions 12 to 15 are based on the conversation you have just heard.12.A)Where the woman studies.B)The acceptance rate at Leeds.C)Leed's tuition for international students.D)How to apply for studies at a university.13.A)Apply to an American university.B)Do research on higher education.C)Perform in a famous musical.D)Pursue postgraduate studies.14.A)His favorable recommendations.B)His outstanding musical talent.C)His academic excellence.D)His unique experience.15.A)Do a master's degree.B)Settle down in England.C)Travel widely.D)Teach overseas.Section C Passage

Directions： In this section，you will hear three passages。At the end of each passage，you will hear three or four questions。Both the passage and the questions will be spoken only once。After you hear a question，you must choose the best answer from the four choices marked A），B），C）and D）。Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard.16.A)They help farmers keep diseases in check.B)Many species remain unknown to scientists.C)Only a few species cause trouble to humans.D)They live in incredibly well-organized colonies.17.A)They are larger than many other species.B)They can cause damage to people's homes.C)They can survive a long time without water.D)They like to form colonies in electrical units.18.A)Deny them access to any food.B)Keep doors and windows shut.C)Destroy their colonies close by.D)Refrain from eating sugary food.Questions 19 to 21 are based on the passage you have just heard.19.A)The function of the human immune system.B)The cause of various auto-immune diseases.C)The viruses that may infect the human immune system.D)The change in people's immune system as they get older.20.A)Report their illnesses.B)Offer blood samples.C)Act as research assistants.D)Help to interview patients.21.A)Strengthening people's immunity to infection.B)Better understanding patients' immune system.C)Helping improve old people's health conditions.D)Further reducing old patients' medical expenses.Questions 22 to 25 are based on the passage you have just heard.22.A)His students had trouble getting on with each other.B)A lot of kids stayed at school to do their homework.C)His students were struggling to follow his lessons.D)A group of kids were playing chess after school.23.A)Visit a chess team in Nashville.B)Join the school's chess team.C)Participate in a national chess competition.D)Receive training for a chess competition.24.A)Most of them come from low-income families.B)Many have become national chess champions.C)A couple of them have got involved in crimes.D)Many became chess coaches after graduation.25.A)Actions speak louder than words.B)Think twice before taking action.C)Translate their words into action.D)Take action before it gets too late.答案

1.A

2.A

3.B

4.D

5.C

6.B

7.D

8.C

9.A

10.B

11.A

12.C

13.D

14.B

15.D

16.C

17.B

18.A

19.D

20.B

21.C

22.D

23.C

24.A

25.B