A research team led by Peter Doran of the University of Illinois at Chicago drilled through more than 39 feet ice to collect samples of bacteria and algae. When Doran's team brought them back and warmed them up a bit， they sprang back to life.
Doran said the microbes have been age-dated at 2，800 years old， but even older microbes may live deeper in the ice sheet sealing the lake， and in the briny water below the ice. That deeper ice and the water itself will be cautiously sampled in a later expedition that will test techniques may one day be used on Mars.
Called Lake Vida， the 4.5-square —— kilometer body is one of a series of lakes located in the McMurdo Dry Valleys of Antarctica， some 2，200 kilometers due south of New Zealand. This lake has been known since the 1950s， but people ignored it because they thought it was just a big block of ice. While at the site for other research in the 1990s， Doran and his colleagues sent radar signals into the clear ice covering the lake and were surprised to find that 62 feet below there was a pool of liquid water that was about seven times more salty than seawater.
That prompted the researchers to return in 1996 with equipment to drill a hole down to within a few feet of the water layer. At the bottom of this hole， researchers harvested specimens of algae and bacteria.
The searchers will return in 2004 equipped with instruments that are sterilized. They will then drill through the full 62 feet of ice and sample some of the briny water from the lake for analysis. The water specimen will be cultured to see if it contains life. Specimens from the water are expected to be even older than the life forms extracted from the ice covering.
1. Paragraph 2 ___.
2. Paragraph 3 ___.
3. Paragraph 4 ___.
4. Paragraph 6 ___.
A. Significance of testing techniques for sampling microbes in the deep ice sheet
B. special features of lake Vida
C. later expedition on mars
D. 2004 revisit planned for collecting lake water specimen
E. Antarctic frozen life sampled and revived
F. Accidental discovery of ice-sealed lake water Antarctica
5. Scientists ignored lake Vida because they thought that a lake of ice ___.
6. Scientists expect that the life， if found in deeper water below the ice sheet， ____.
7. What the scientists will do in 2004 ___.
8. The salt concentration in the liquid water of Lake Vida ___.
A. is found to be a great deal higher than that of seawater
B. was of little scientific value
C. may be older than that collected below 39 sheet of ice
D. might have come from Mars
E. is to collect some briny lake water for analysis
F. may return to life sooner than microbes frozen in the surface ice.
第四部分：阅读理解（每题3分，共45分）
下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案涂在答题卡相应的位置上。
第1篇
Losing Weight
Girls as young as 1 0 years old are dieting and in danger of developing unhealthy attitudes
about weight，body image and food，a group of Toronto researchers reported Tuesday.
Their study of 2，279 girls aged 10 to 14 showed that while the vast majority had healthy
weights，nearly a third felt they were overweight and were trying to lose pounds.Even at the tender agez of 10，nearly 32 per cent of girls felt“too fat''and 31 per cent said they were trying to diet.
McVey，a researcher at.the Hospital for Sick Children in Toronto，and her colleagues
analyzed data collected in a number of surveys of southern Ontario school girls between 1 993 and 2003，reporting their findings in Tuesday's issue of the Canadian Medical Association Journal.
Nearly 80 per cent of the girls had a healthy body weight and only 7.2 per cent were
considered overweight using standard weight-to.height ratios.Most researchers suggest the rate of overweight children in this country is several times higher than that figure.
Nearly 30 per cent of the girls reported they Were currently trying to lose weight，though few admitted to dangerous behavior such as self-induced vomiting.
Still，a test that measured attitudes towards eating showed 10.5 per cent of survey
Participants were already at risk of developing an eating disorder.
‘'We're not talking about kids who've been prescribed a diet because they're above average weight or overweight. We're talking about children who are within a healthy weight range.And they have taken it upon themselves to diet to lose weight，“McVey said，acknowledging she found the rates disturbing.She said striking a balance between healthy weights and healthy attitudes towards food and body image is a complex task，with no easy solutions.
词汇：
overweight adj.超重的；过重的
induce vt.引起，导致
prescribe vt.处方；开药；嘱咐
1.The study showed that most of the girls
A）were overweight.
B） were on a diet.
C）had unhealthy attitudes about weight
D）had a healthy body weight.
2.What percentage of the girls considered themselves overweight？
A）Nearly 80 percent.
B）7.2 percent.
C）Nearly 30percent.
D）10.5 percent.
3.The survey participants were girls
A）whowere 10.
B）who were 14.
C）who were 10 to 14.
D）who were 10 to 18.
4. What kind of institution does the lead researcher work with？
A）A schoo1.
B）A hospital.
C）An association.
D）A charity.
5. Unhealthy attitudes about weight，body image and food may
A）lead to an eating disorder.
B）result from self-induced vomiting.
C）make it easier to gain weight.
D）bring about greater competition.
第2篇
Will Quality Eat up the U.S. Lead in Software？
If U.S. software companies don't pay more attention to quality， they could kiss their business good-bye. Both India and Brazil are developing a world-class software industry. Their weapon is quality and one of their jobs is to attract the top U.S. quality specialists whose voices are not listened to in their country.
Already， of the world's 12 software houses that have earned the highest rating in the world， seven are in India. That's largely because they have used new methodologies rejected by American software specialists. For example， for decades， quality specialists， W. Edwards Deming and J. M. Juran had urged U.S. software companies to change their attitudes to quality. But their quality call mainly fell on deaf ears in the U.S —— but not in Japan. By the 1970s and 1980s， Japan was grabbing market share with better， cheaper products. They used Deming's and Juran's ideas to bring down the cost of good quality to as little as 5% of total production costs. In U.S. factories， the cost of quality then was 10 times as high： 50%. In software， it still is.
，2017职称英语考试全真模拟试题 理工类C级第三套