B

Scientists have devised a way to determine roughly where a person has lived using a strand (縷) of hair, a technique that could help track the movements of criminal suspects or unidentified murder victims.

The method relies on measuring how chemical variations in drinking water show up in people’s hair.

“You’re what you eat and drink, and that’s recorded in your hair,” said Thure Ceiling, a geologist at the University of Utah.

While U.S. diet is relatively identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as rain 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 rain 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 construct 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 map 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 rain systems.

“It’s not good for pinpointing (精確定位),” Ceding said. “It’s good for eliminating many possibilities.”

Todd Park, a local detective, said the method has helped him learn more about an unidentified woman whose skeleton was found near Great Salt Lake.

The woman was 5 feet tall. Police recovered 26 bones, a T-shirt and several strands of hair.

When Park heard about the research, he gave the hair samples to the researchers. Chemical testing showed that over the two years before her death, she moved about every two months.

She stayed in the Northwest, although the test could not be more specific than somewhere between eastern Oregon and western Wyoming.

“It’s still a substantial area,” Park said. “But it narrows it way down for me.”

61. According to the passage scientists’ new discovery is that          .

  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 accurately identifies criminal suspects.

  D. The chemical composition of hair varies from person to person.

62. The underlined sentence “You’re what you eat and drink” (Line 1, Para. 3) means        .

A. Food and drink affect one’s personality development.

B. Food and drink preferences vary with individuals.

C. Food and drink leave traces in one’s body tissues.

D. Food and drink are indispensable to one’s existence.

63. Which of the following is true of the rainfall in America’s West?

A. There is much more rainfall in California than in Utah.

B. The water it delivers becomes lighter when it moves inland.

C. Its chemical composition is less stable than in other areas.

D. It gathers more light isotopes as it moves eastward.

64. Cerling’s team produced__________in their research?

A. a map showing the regional differences of tap water

B. a collection of hair samples from various barber shops

C. a method to measure the amount of water in human hair

D. a chart illustrating the movement of the rain system

65. 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.

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Christopher Reeve is best known as the man who played Superman always fighting against the forces of evil(邪惡). He came to ___1___ the victory of good over bad. Now he has taken on his ___2___ fight. 

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1. A. show      B. play    C. stand for    D. win

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3. A. when      B. before        C. after   D. by

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5. A. above     B. below        C. from   D. of

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7. A. And       B. however     C. Still    D. So

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11. A. treating        B. caring        C. serving       D. curing

12. A. research       B. patients      C. hospital      D. medicine

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14. A. later     B. possibly     C. hardly        D. never

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16. A. money  B. equipment  C. time    D. views

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18. A. spinalcord    B. illness        C. position      D. spirit

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科目：高中英語 來源：浙江省平湖中學(xué)2009-2010學(xué)年度高二下學(xué)期4月月考 題型：閱讀理解


D
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It is estimated that as many as 2, 000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A& M, the first-ever attempt at cloning a dog.
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A. available panda eggs                     B. host animals
C. qualified researchers                     D. enough money
70. The best title for the passage may be _______.
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B. The First Cloned Panda in the World
C. Exploring the Possibility to Clone Pandas
D. China —the Native Place of Pandas Forever
71. From the passage we know that _______.
A. Kraemer and his team have succeeded in cloning a dog
B. scientists try to implant a panda’s egg into a rabbit
C. Kraemer will work with Chinese scientists in clone researches
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A.keep windows open and let fresh air in.
B.Scientists have a clear idea how plants control air pollution.
C.Oxygen is let out through the leaves and roots of the plants.
D.Green plants are a natural pollution control system for building.

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科目：高中英語 來源：山西省康杰中學(xué)2010屆高三5月第五次模擬考試英語試題 題型：閱讀理解


It’s not a particular brain region that makes someone smart or not smart. Nor is it the strength and speed of the connections throughout the brain or such features as total brain volume. Instead, new research shows, it’s the connections between very specific areas of the brain that determine intelligence.
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“These studies suggest results based on the absence of brain tissue (組織),”added Paul Sanberg, famous professor and director of the University of South Florida Center. “It allows them to systemize and find areas important to intellingence.”
1. Which of the following is the best title for the passage?
A. General Intelligence Depend on Brain Volume
B. Scientists Explain Mysteries of Intelligence
C. Science Research Done on Human Brain
D. Brain Lesions Cause Patients Stupid
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B. a person good at maths has obstacles learning languages
C. overall intelligence will make a person successful
D. Jan Glascher’s article really shocks the world
3. Why did experts locate 241 patients with some sort of brain lesions?
A. To diagram the location of their lesions.
B. To take IQ tests to the patients.
C. To know more about the secrets of intelligence.
D. To take better care of the patients.
4.From the diagram, the experts concluded that_____________.
A. the absence of brain tissue will influence intelligence
B. the brain lesions can improve the performance
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D. Some areas totally determine the ability of intelligence

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科目：高中英語 來源：2014屆天津市高三上期第一次月考英語卷（解析版） 題型：閱讀理解

Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino （厄爾尼諾）. The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.

One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe（津巴布韋）, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.

The scientists wrote about their recent work in the publication（出版物）Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.

1.El Nino is known as ___.

A. the changing of the weather in southern Africa

B. the warming of waters in the Pacific Ocean

C. the weather which brings drought（旱災(zāi)）to Africa

D. the weather phenomenon（現(xiàn)象）that brings heavy rains to Africa

2.Scientists study El Nino in order that ___.

A. they can provide a kind of early warning to the place that will suffer from drought

B. they can tell why Zimbabwe has little or no rain

C. they can do some research work in this field.

D. they can put all this information into their computers.

3.Which of the following is TRUE according to the passage?

A. Scientists come to understand how El Nino appears.

B. Three scientists from the USA work on this subject.

C. Southern Africa suffered a serious drought and many people died from hunger.

D. El Nino has something to do with Zimbabwe’s poor crops.

4.Which of the following is NOT true according to the article?

A. The computer is used in this research work.

B. Scientists know when an El Nino appears by means of the computer program.

C. The scientists published their results of the research work.

D. Nature is the name of the article written recently by the scientists.

5.What’s the best title for this passage?

A. Appearance of El Nino is Predictable（可預(yù)測的）

B. Drought in Zimbabwe

C. Early Warning System

D. Weather in Africa

 

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