题目
题型:不详难度:来源:
One way to avoid accidents is better driving . Another is better roads and bridges . Engineers in the Unites States have designed ten new concrete mixtures that they think could make bridges last longer .
Professor Paul Tikalsky leads the experiments by a team at Pennsylvania State University . He says bridges made of concrete now last about twenty-five to thirty-five years . But he says the new mixtures might extend that to seventy –five or even one-hundred years .
Concrete is made of stone , sand , water and cement(水泥). The materials in the cement hold the concrete together . Ancient Romans built with concrete . Yet strengthened concrete bridges did not appear until the late 1800s . People keep looking for new ways to improve concrete . Professor Tikalsky says it is one of the most complex of all chemical systems .
The new mixtures designed by his team contain industrial waste products . He says these make the concrete better able to resist damage from water and salt over time . One of the products is fly ash . This is released into the air as pollution when coal is burned .
Professor Tikalsky says particles (颗粒)of fly ash are almost exactly the same size and chemical structure as Portland cement . This is the most costly material in concrete . So using fly ash to replace some of it would save money .
The federal government is paying for part of the research . Engineers anywhere can use the technology . Professor Tikalsky says some of the ideas have already been put to use in China , the Philippines and other countries .
小题1:Why did the United Nations launch the campaign ?
A.Because the United Nations wanted to reduce road accidents and economic costs |
B.Because two million people were killed in the accidents . |
C.Because engineers wanted to design ten new concrete mixtures . |
D.Because the United Nations made bridges of the new mixtures which could last for about 20 to 35 |
小题2:What does the underlined word “ this ” in the sixth paragraph refer to ?
A.Fly ash | B.Portland cement | C.Sand | D.Chemical |
A.Ten new concrete bridges have already been built in the United States . |
B.A new concrete bridge could last 50 more years than an ordinary concrete one . |
C.People didn’t know how to build with cement until the late 1800s . |
D.Water and salt won’t do any damage to bridges over time . |
A.The causes of road accidents . | B.The advantages of fly ash |
C.The measures of avoiding road accidents | D.Latest information about long-life concrete bridges |
答案
小题1:A
小题2:B
小题3:B
小题4:D
解析
核心考点
试题【Each year, road accidents kill a million people and injure millions more . The e】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
第二节 完形填空(共20小题,每小题1.5分,满分30分)
阅读下面短文,掌握大意,然后从36-55各小题所给四个选项(A、B、C、D)中,选出最佳选项,并在答题卡上将该项涂黑。
A couple of years ago, a minister(牧师) in an American church got fed up with listening to the people in his church complaining. They were complaining about little 36 : the service(礼拜仪式) was too long, the service was too short; they didn’t like the choice of 37 they had to sing in church. He felt all this complaining was 38 everyone feel negative. So, he 39 to do something about it.
He gave the people in his church a(n) 40 : try to stop complaining for 21 41 .And not just about the church, about everything! He 42 gave each person in the church a purple bracelet(手镯) to wear on their wrists. The bracelet was to 43 them not to complain. 44 , after three weeks of not complaining, people said they felt happier. They 45 that the less they complained, the happier their lives became.
Complaining seems to be part of our human nature. Life, 46 , is full of difficulties. It is 47 to feel disappointed, irritated and unhappy at times. The real problem, 48 , comes when we take those negative inner feeelings and 49 them out loud. Somehow, it makes everything 50 . The more we complain, the worse we feel; the worse we feel, the more we complain. And it 51 everyone around us, too. It can become a virus of negativity.
Doctors say that complaining is aslo 52 for your health. They say that people who aren’t complainers are healthier, happier, have more friends and are more successful than people who complain all the time. So, 53 something ticks you off, like a rainy day or a bad meal, try 54 your tongue instead of complaining. It will be your contribution to 55 a world without complaints.
36. A.advantages B.places C.things D. opinions
37. A.songs B.activities C.words D.speeches
38. A.causing B.making C.forcing D.getting
39. A.expected B.suggested C.wished D.decided
40. A.challenge B.gift C.suggestion D.explanation
41. A.hours B.days C.weeks D.months
42. A.even B.only C.ever D.also
43. A.hope B.warn C.remind D.persuade
44. A.Surprisingly B.Fortunately C.Finally D.Clearly
45. A.described B.imagined C.discovered D.understood
46. A.above all B.after all C.as a result D.first of all
47. A.important B.strange C.possible D.natural
48. A.besides B.instead C.however D.otherwise
49. A.express B.perform C. give D.hand
50. A.better B.worse C.satisfying D.puzzling
51. A.benefits B.improves C.attracts D.affects
52. A.bad B.good C.necessary D.fantastic
53. A.although B.now that C.even if D.next time
54. A.taking B.holding C.opening D.using
55. A.changing B.damaging C.building D.declaring
The Hokkaido Industrial Research Institute has built a number of “melody roads”, which use cars as tuning forks to play music as they travel.
The concept works by using grooves(凹槽). They are cut at very specific intervals(间隔) in the road surface. The melody road uses the spaces between to create different notes(音符).
Depending on how far apart the grooves are, a car moving over them will produce a series of high or low notes, and designers are able to create a distinct tune.
Patent documents for the design describe it as notches “formed in a road surface so as to play a melody without producing simple sound or rhythm and reproduce melody-like tones”.
There are three musical roads in central and northern Japan---one of which plays the tune of a Japanese pop song. Reports say the system was invented by Shizuo Shinoda. He scraped some markings into a road with a bulldozer(推土机) before driving over them and found that they helped to produce all kinds of tones.
The optimal speed for melody road is 44 kph, but people say it is not always easy to get the intended sound.
“You need to keep the car windows closed to hear well,” wrote one Japanese blogger. “Driving too fast will sound like playing fast forward, while driving around 12 mph (20 kph) has a slow-motion effect, making you almost car-sick.”
59. According to the passage, to create different notes, melody roads use ______.
A. cars B. grooves C. spaces between internals D. bulldozers
60. We can learn from the passage that the highness of notes is dependent on ______.
A. how far the grooves are B. how big the grooves are
C. the number of the grooves D. the speed of the car
61. The underlined word “optimal” in the passage might mean ______.
A. fastest B. possible C. best D. suitable
62. In order to hear the music well, you have to ______.
A. drive very fast B. drive slowly
C. open the window wide D. keep the window closed
According to a survey by CIF, there’s room for improvement all over Britain.
Love or hate it — cleaning your home is one job you simply can’t ignore(忽视). But that’s not to say everyone spends the same amount of time or effort on making their places spotless. A new survey by CIF— experts on making tough cleaning jobs easier—— shows that when it comes to washing windows or cleaning the oven(烤箱),where you live in the UK it may show how much effort you put into the task.
BATHROOM
25% of men have never cleaned the toilet — but those in Wales are the worst. Nearly four in 10 Welsh men said they never cleaned anywhere in the house. Hate cleaning the shower head? You’re not alone — a quarter of a million Brits say the same. 20% of Scots regard window-cleaning as their most hated job.
KITCHEN
36% of people in the south-east say cleaning the cooker is their hated task. 68% of those in the north-east spend more than six hours a week cleaning their homes — especially the kitchen — in sharp contrast to the 49% of Welsh and West Country folk, who put their hands up to cleaning for under an hour.
BEDROOM
18% believe cleaning starts here: that’s the percentage of women who clean wearing their dressing gowns. 51% of women in the north-west may be staying in bed and giving their husband a cuddle(拥抱)—as a thank-you for helping them clean. In other places, there are far fewer helpful men.
LIVING ROOM
32% of women in the north-east turn up the stereo to help make the dusting more fun. Almost six in 10 women agree, however, that cleaning is seriously energetic exercise.
SHIFT THE DIRT WITH CIF
It’s no secret that the right cleaning products will cut cleaning time and effort in half— and no one knows that better than How Clean Is Your house? Presenters Aggie Mackenzie and Kim Woodburn. For solutions(解决办法)to all your cleaning needs, here are some of CIF’s top tips:
·Stop a lot of build-up on your shower head—give it a quick squirt(喷洒)with CIF bathroom spray once a week.
·Stainless steel(不锈钢)tools seem to need endless cleaning. The CIF Wild Qrchid Qxy-Gel-it lifts dirt easily and leaves the kitchen smelling fresh and clean.
·Cooking outside? CIF cream will get your barbecue (烤架)spotlessly clean, ready for those long, lazy summer evenings. Perfect!
小题1:The main purpose of this passage is to ______.
A.tell us the results of a certain survey |
B.advertise a certain product |
C.advise men to do more cleaning housework |
D.tell us which is the hardest job at home |
A.have different views on house cleaning |
B.spend different amounts of time and effort on house cleaning |
C.like to do different kinds of housework |
D.have different ways to do housework |
A.the Welsh | B.people in the north-west |
C.people in the south-east | D.people in the north-east |
A.an organization doing research on housework |
B.a group of experts who give advice on doing housework |
C.a company providing advice and products on cleaning |
D.a company providing cleaning services |
Taking all amateur(业余)and professional sports in Britain into consideration, there can be no doubt that football is at the top of the list. It is called soccer in the United States. The game originated in Britain and was played in the Middle Ages or even earlier, though as an organized game, or “association football”, it dates only from the beginning of the 19th century.
The next is rugby, which is called “football” in the United States. It is a kind of football played by two teams of fifteen players rather than eleven. The rugby, in which an oval-shaped ball is used can be handled as well as kicked. It is a pretty rough game.
In summer, cricket is the most popular sport. In fact, it has sometimes been called the English national game. Most foreigners find the game rather slow or even boring, but it enjoys great popularity among the British.
Tennis rates high on the list, too. It was introduced into England from France in the 15th century, but it was from England that it spread to practically every country in the world.
Table-tennis or “ping-pong” surely is not played on a great scale as it is in China or in Japan. Basketball and volleyball were introduced into Britain during the late 19th century from America and are gaining popularity. Horse-back riding, swimming, rowing and golf all attract a lot of people.
小题1:The main purpose of paragraph one is to tell us that the English_______.
A.are all sports lovers | B.behave like children |
C.like to kick a ball around | D.can remain young all their lives |
A.They differ in the shape of the ball |
B.They are played by different numbers of players |
C.They both can be handled |
D.They both can be kicked |
A.Americans love football most of all |
B.British people love rugby most of all |
C.Americans and British people may call the same thing differently |
D.football originated in Britain in the 18th century |
基础训练篇(12)
We all know that computers have played and (1)__________ play a very important part (2)___________ various fields.
In personal lives, computers can do lots of work. It can carry (3)___________ people’s instructions. In agriculture, computers are used (4)_____________ control the (5)__________(grow) conditions of vegetables and other plants. In transportation(交通运输), computers can work out the best distance (6)__________ trains and operate the trains instead (7)____________ human beings. In the fields of education, health and scientific research, computers are important, (8)___________. People use them to store information (9)______________ records.
Because of the computers, life is easier and (10)________ convenient for people.
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