题目
题型:不详难度:来源:
C
Recently scientists have worked out a way to judge roughly where a person has lived using strands(缕) of hair, a technique that could help track the movements of criminal suspects or unidentified bodies .
The method depends on measuring how chemical variations in drinking water show up in people’s hair.
While U.S diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as clouds move.
Most hydrogen and oxygen atoms in water are stable , but traces of both elements are also present as heavier isotopes (同位素) . The heaviest raid(列阵)falls first. As a result, storms that form over the Pacific deliver heavier water to California than to Utah.
Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can establish a geographic timeline. Each inch of hair corresponds to about two months.
Cerling’s team collected tap water samples from 600 cities and constructed a frame of the regional differences. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops. They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of raid systems.
“It’s not good for pinpointing (精确定位),” he said. “It’s good for ruling out many possibilities.”
64. What can we learn from the passage about the latest discovery?
A. One’s hair growth has to do with the amount of water they drink.
B. A person’s hair may reveal where they have lived.
C. Hair analysis identifies criminal suspects accurately.
D. The chemical composition of hair varies from person to person.
65. What does the underlined word “identical” in paragraph 3 probably mean?
A. similar B. fantastic C. beneficial D. healthy
66. What is the practical value of Cerling’s research?
A. It helps analyze the quality of water in different regions.
B. It helps the police determine where a crime is committed.
C. It helps the police narrow down possibilities in detective work.
D. It helps identify the drinking habits of the person under investigation.
答案
64-66 BAC
解析
核心考点
试题【CRecently scientists have worked out a way to judge roughly where a person has l】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Ⅱ语言知识及应用(共两节,满分35分)
第一节完形填空(共10小题;每小题2分,满分20分)
阅读下面短文,掌握其大意,然后从21~30各题所给的A、B、C和D项中,选出最
佳选项,并在答题卡上将该项涂黑。
Scottsdale was a typical American suburb in the 1950s,with children going to each other"s houses to play, or riding their bikes around the neighbourhood. But for Steven Spielberg none of these “normal” activities were very excitmg. Instead he made his own entertainment, like the time he 21 his younger sisters that he had a dead body in his bedroom and almost frightened them to death.
When Steven was about seven years o1d, he developed a 22 for television, despite the 23 his parents made t control the children"s viewing. His father 24 placed hair on the television“ON" switch to know when Steven watched TV. But Steven would 25 its pasition and replace it after watching hours of television.
A chance finally came for Steven to 26 his ability to entertain with his enthusiasm for television. When his father received a movie camera for Father’s Day, the movies he took,“according to Steven, were 27 .Annoyed by his son"s 28 criticism(批评),he gave the camera to Steven.
Steven proved to be a( an) 29 with the camera and quickly made several films using his own toys as the performers. His parents were 30 by how Iife-like they were and so he began a magnificent movie career.
21. A. convinced B. reminded C. promised D. encouraged
22. A. gift B. need C. concem D. love
23. A. decisions B. suggestions C.attempts D. preparations
24. A quietly B. secretly C hopefully D. successfully
25. A locate B. relate C. memorize D. examine
26. A combine B. compare C. connect D. accompany
27. A spccial B.terrible C. entertaining D .surprising
28. A occasional B. humourous C .unreasonable D .constant
29 . A winner B. expert C. natural D native
30. A .satisfied B. amazed C. puzzled D .inspired
Ⅲ 阅读 (共两节,满分40分)
第一节阅读理解(共15小题;每小题2分,满分30分)
阅读下列短文,从每题所给的A、B、C和D项中,选出最佳选项,并存答题卡上将该
项涂黑。
(A)
Increasingly over the last few years,we have become familiar with the range of small electronic devices or “smart” accessories (附件,饰品 ) . Pocket heart -rate monitors for joggers and electronic maps are just the first examples of many new products that promise to change our lives in all sorts of surprising ways.
As a scientist at New York University . Rosalind Picard tries out different smart accessories before they go on the market. One of these was the so-called " frown (皱眉)headband". Rosalind was shocked to realize just how often she frowned. Stuck in a traffic jam recently, Rosalind kept hearing the sounds of the tiny sensor inside the band worn around her forehead -each time she frowned in annoyance, the sensor gave out a signal.
Another computer scientist , Stevcn Feiner, is working on a pair of glasses that will do more than help you to see .Imagine you want to try a restaurant in a foreign city but you"re not familiar with the dishes on the menu. If you are weanng a pair of Steven"s glasses . all yau have to do is glance above the restauran’s doorway and your glasses will immediately become windows to the Tntemet, offering you full details of the meals served inside. The glasses could also be used to help people make speeches,give chefs access to the latest recipes and even provide doctors with
patient information while they carry out operations.
At the moment, Steven"s invention looks more like a large ski mask than a pair of glasses.
It"s a headset connected to a hand-held computer and a Global Positioning System ( GPS ) receiver, which tracks the wearer"s position. But he says that these head-worn displays will eventually get smaller and lighter as technology improves.
And, of course, this new technology has a fashionable as well as a useful application. A chemical engineer named Roben Langer has invented a new microchip that, if put inside a ring,can give off different smells according to a person"s mood. That, of course, may or may not appeal to you. And,in the end , it is shoppers . not scientiscs , who will determine which of these smart accessories will succeed as fashionable items and which are sure tO join history"s long list of crazy inventions.
It is clear,however ,that as computers get smaller and cheapcr. Lhcy will pop up in all sorts
of easily-wearable accessories . even in the buttons on your coat. WhaCs morc, this is something that"s going to happen a lot sooner than we all expect.
41. When Rosalind wore the headband, she was surprised a___________
A. how well the sensor worked B. how she was affected by traffic
C. how strong the signal was D. how uncomfortable it was
42. For people eating out , Steven’ s glasses can___________
A . give them a restaurant"s location
B. let them see a restaurant"s environment
C. inform them about a restaurant’s menu
D. tell them about a restaurant"s quality
43. What is the current problem with Stevcn"s glasses?
A. Limited function. B. Inconvenience.
C. High cost. D. Poor Internet access.
44. In general, what does the writer think about smart accessories?
A. They will soon be widely available.
B. Much more research is needed into them.
C. Only a few of them will appeal to shoppers.
D. Most of them are considered to be crazy inventions.
45. What"s the writer"s purpose in writing this passage?
A. To advertise some smart accessories.
B .To tell interesting stories about smart accessories.
C. To argue that smart accessories are fashionable.
D. To introduce the idea of smart accessories.
(B)
One of the main challenges facing many coutries is how to maintain their identity in the face of globalization and the growing multi-language trend. “One of the main reasons for economic failure in many African countries is the fact that,with a few important exceptions,mother-tongue
education is not practiced in any of the independent African states." said Neville Alexander.Dutctor of the Project for the Study of Aitemative Education in South Africa at the University of Cape Town.
In response to the spread of English and the increased multi-language trends arising from Immigration . many countries have inuoduced language laws in the laws in the last decade .In some ,the use of languages other than the national language is banned in public spaccs such as advertsing posters. One of the first such legal proviaions was the 1994 " Toubon law" in France. but the idea hs been copied in many counuics since then. Such efrorts to govern language use are often
dismisscd as futile by language experts . who are well aware of the difficulty of controlling fashions in specch and know from research that language switching among bilinguals is a natural process.
It is especiaLly difficult for native speakers of English to understand the desire to maintain the "purity" of a language by law. Since the time of Shakespeare . English has continually absorbed
foreign words into its own language. EngLish is one of the most mixed and rapidly changing languages in the world. But the has not been a barrier to acquiring prestige and power. Another reason for the failure of many native English speakers to understand the role of state regulation is that it bas never been the Aryllo-Saxon way of doing things. English has never had a state-controlled
autharity for the language, similar, for example . to the Academie Francaise in France.
The need to prorect national languages is for most western Europeansa recent phenomenon- especially the need to ensure that English does not unnecessarily take over too many fields.
Public communication, educauon and new modcs of communication promoted by technology,may be key fields to defend.
46. Neville Alexander believes that___________.
A. mother-tongue education is not practiced in all African countries
B. lack of mother-tongue education can lead to economic failure
C. globalization has led to the rise of multi-language trends
D. globalization has resulted in the econonuc failure of Africa
47 . The underlined word " futile" (in paragraph 2) most probably means "___________"
A. useless B. pracucal C. workable D. unnecessary
48. Why do many English-speaking; cuuntries not support the language protection efforts described in the passage?
A. They think language protection laws are ineffective.
B. They want their language to spread to other countries.
C. They have a long history of taking words from other languages.
D. It reduces a language"s ability tO acquire intenatiunal importance.
49.what can we infer from the last paragraph?
A. English has taken over fields like public communication and education.
B. Europeans have long realizcd the need to protect their national Languages.
C. Most language experts believe it is important to promote a national language.
D. Many aspects of national culture are threatened by the spread of English.
50. The best title for the passage is___________.
A. Fighting against the rule of English
B. GlobaLization and multi-language trends
C. Protecting local languages and identities
D. to maintain the purity of language by law
E
“A good book for children should simply be a good book in its own right,” says Mollie Hunter. Born and brought up near Edinburgh, Mollie has devoted her talents to writing primarily for young people. She firmly believes that there is always and should always be a wider audience for any good book whatever its main market is. In Mollie"s opinion it is necessary to make full use of language and she enjoys telling a story, which is what every writer should be doing. “If you aren"t telling a story, you"re a very dead writer indeed,” she says. With the chief function of a writer being to entertain, Mollie is indeed an entertainer. “I have this great love of not only the meaning of language but of the music of language,” she says. “This love goes back to early childhood. I"ve told stories all my life. I had a school teacher who used to ask us what we would like to be when we grew up and, because my family always had dogs, and I was very good at handling them, I said I wanted to work with dogs, and the teacher always said ‘Nonsense, Mollie, dear, you’ll be a writer.’ So finally I thought that this woman must have something, since she was a good teacher and I decided when I was nine that I would be a writer.”
This childhood intention is described in her novel, A Sound of Chariots, which although written in the third person is clearly autobiographical and gives a picture both of Mollie"s ambition and her struggle towards its achievement. Thoughts of her childhood inevitably(不可避免地)brought thoughts of the time when her home was still a village with buttercup meadows and strawberry fields—sadly now covered with modern houses.“I was once taken back to see it and I felt that somebody had lain dirty hands all over my childhood. I"ll never go back,”she said. “Never.”“When I set one of my books in Scotland,”she said,“I can recall my romantic (浪漫的) feelings as a child playing in those fields, or watching the village blacksmith at work. And that"s important, because children now know so much so early that romance can"t exist for them, as it did for us.”
57. What does Mollie Hunter feel about the nature of a good book?
A. It should not aim at a narrow audience.
B. It should not be attractive to young readers.
C. It should be based on original ideas.
D. It should not include too much conversation.
58. In Mollie Hunter"s opinion, which of the following is one sign of a poor writer?
A. Being poor in life experience. B. Being short of writing skills.
C. The weakness of description. D. The absence of a story.
59. What do we learn about Mollie Hunter as a young child?
A. She didn"t expect to become a writer. B. She didn"t enjoy writing stories.
C. She didn"t have any particular ambitions. D. She didn"t respect her teacher"s views.
60. What"s the writer"s purpose in this text?
A. To describe Mollie Hunter"s most successful books.
B. To share her enjoyment of Mollie Hunter"s books.
C. To introduce Mollie Hunter"s work to a wider audience.
D. To provide information for Mollie Hunter"s existing readers.
C
Still want a laptop? That was so yesterday. Get ready for the next stage in the personal computer revolution: It"s the ultrathin (超薄的), cheap netbook.
According to a New York Times report last week, personal computers are about to go through their biggest change since the rise of the laptop. By the end of the year, consumers are likely to see laptops the size of thin paperback books that can run all day on a single charge and are equipped with touch screens or slide-out keyboards. The netbook is a kind of portable computer with learner functions for online surfing and basic computing activities, for example, word processing. To cut the cost and weight, they usually have a low-powered processor, small screen, narrow keyboard, and no ODD.
Currently, some of the devices look more like a toy than a full-feature computer. That"s because most of the netbooks sold today run on an Intel chip called Atom. This is a lower-power version of the company"s standard laptop chip, so they have trouble running demanding software like games and photo-editing programs.
This year, a group of companies who make cheap, power-saving chips used in cell phones are applying that expert skill to PCs. That means they will break Atom"s netbook dominance (统治地位) and reduce the size while letting it run complicated programs.
The big winner in the rise of netbooks will be the consumer. AT&T announced last week that customers in Atlanta, Georgia, US, could get a netbook for just $50 (342 yuan) if they signed up for an Internet service plan. This trend will soon spread to Asia, according to industry experts.
University campuses are a major target of Shanzhai netbooks—uncopyrighted (无版权的) domestic copies of foreign brands. These products are usually sold at less than 2,000 yuan. But industry insiders suggest students not use these nameless products because many of them don"t provide good after-safes services.
49.The following are all advantages of netbooks EXCEPT that .
A.people can easily edit photographs with them
B.they cost less than other personal computers
C.they are very thin and easy to carry
D.they save power
50.Why are students advised not to use Shanzhai netbooks?
A.Because they are of poor quality.
B.Because they are not easy to operate.
C.Because they will soon be out of date.
D.Because they lack good after-sales services.
51.What can be inferred from the passage?
A.Laptops are becoming more and more popular.
B.University students seldom buy Shanzhai netbooks.
C.Shanzhai netbooks are sold better than those of famous foreign brands.
D.Atom"s netbooks make up the largest part of the sales of portable computers at present.
52.What is the general idea of this passage?
A.Shanzhai netbooks are taking control of laptop market.
B.Netbooks have advantages over laptops in everything.
C.Netbooks are becoming the trend of personal computers.
D.Most of the netbooks sold today run on an Intel chip called Atom.
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