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 or 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 (精确定位),” 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.”
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注意：此部分试题请在答题卡2上作答。
62. What is the scientists’ new 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 accurately identifies criminal suspects.
D) The chemical composition of hair varies from person to person.
63. What does the author mean by “You’re what you eat and drink”
(Line 1, Para. 3)?
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.
64. What is said about 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.
65. What did Cerling’s team produce 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.
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.
Part V Cloze (15 minutes)
注意：此部分试题请在答题卡2上作答。
Kimiyuki Suda should be a perfect customer for Japan’s car-makers.
He’s young, successful executive at an Internet-services company in Tokyo and has plenty of disposable __67__. He used to own Toyota’s Hilux Surf, a sport utility vehicle. But now he uses __68__ subways and trains. “It’s not inconvenient at all,” he says. __69__, “having a car is so 20th century.”
Suda reflects a worrisome __70__ in Japan; the automobile is losing its emotional appeal, __71__ among the young, who prefer to spend their money on the latest electronic devices. __72__ mini-cars and luxury foreign brands are still popular, everything in between is __73__. Last year sales fell 6.7 percent, 7.6 percent __74__ you don’t count the mini-car market. There have been __75__ one-year drops in other nations: sales in Germany fell 9 percent in 2007 __76__ a tax increase. But experts say Japan is __77__ in that sales have been decreasing steadily __78__ time. Since 1990, yearly new-car sales have fallen from 7.8 million to 5.4 million units in 2007.
Alarmed by this state of __79__, the Japan Automobile Manufacturers Association (JAMA) __80__ a comprehensive study of the market in 2006. it found that a __81__ wealth gap, demographic (人口结构) changes and __82__ lack of interest in cars led Japanese to hold their __83__ longer, replace their cars with smaller ones __84__ give up car ownership altogether. JAMA __85__ a further sales decline of 1.2 percent this year. Some experts believe that if the trend continues for much
longer, further consolidation (合并) in the automotive sector is __86__.
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67. A) profit C) income B) payment D) budget
68. A) mostly C) occasionally B) partially D) rarely
69. A) Therefore C) Otherwise B) Besides D) Consequently
70. A) drift C) current B) tide D) trend
71. A) remarkably C) specially B) essentially D) particularly
72. A) While C) When B) Because D) Since
73. A) surging C) slipping B) stretching D) shaking
74. A) unless C) as B) if D) after
75. A) lower C) broader B) slighter D) larger
76. A) liable to C) thanks to B) in terms of D) in view of
77. A) unique C) mysterious B) similar D) strange
78. A) over C) on B) against D) behind
79. A) mess C) growth B) boom D) decay
80. A) proceeded C) launched B) relieved D) revised
81. A) quickening C) strengthening B) widening D) lengthening
82. A) average C) abundant B) massive D) general
83. A) labels C) vehicles B) cycles D) devices
84. A) or C) but B) until D) then
85. A) concludes C) reckons B) predicts D) prescribes
86. A) distant C) temporary B) likely D) immediate
Part VI Translation (5 minutes)
注意：此部分试题请在答题卡2上作答，只需写出译文部分。
87. Soon after he transferred to the found that he new school, Ali had________________ (很难跟上班里的同学) in math and English.
88. If she had returned an hour earlier, Mary ________________(就不会被大雨淋着了).
89. It is said that those who are stressed or working overtime are________________ (更有可能增加体重).
90. (很多人没有意识到的)________________ is that Simon is a lover of sports, and football in particular.
91. The study shows that the poor functioning of the human body is ________________(与缺乏锻炼密切相关).
参考答案：
仅供参考
范文1:
It is well known that a museum is a building to display a collection of artistic,historical,cultural or military objects. ndoubtedly museums can have a variety of purposes in the city; I think two roles the museums play can illustrate they areworth visiting.
Now we talk about how to fund a museum. A museum can never be considered as a financial burden to society. I suggest that the Government should invest a small amount of money on advertisements for the museums in the city. For example, ads of the museums should be forwarded on the travel brochures or maps of the city. Consequently tourists come and admission tickets are collected. Both reputation and funds are earned. Conclusion (23 words) In brief, museums should play a role as an instructive means of the city and incomes from admission can keep them running properly.