In a natural disaster—a hurricane,flood,tornado,volcanic eruption,or other calamity—minutes and even seconds of warning can be the difference between life and death.Because of this,scientists and government officials are working to use the latest technological advances to predict when and where disasters will happen.They are also studying how best to analyze and communicate this information once it is obtained.The goal is to put technology to effective use in saving lives and property when nature unleashes its power with devastating results.
On September 29,1998,Hurricane Georges made landfall in Biloxi,Mississippi,after devastating Haiti,the Dominican Republic,Puerto Rico,and several islands of the Caribbean with torrential rains and winds up to 160 km/h （100 mph）.Few people lost their lives along the Gulf Coast of the United States,although hundreds died in the Caribbean.
This was a very different outcome from 1900,when a powerful Gulf Coast hurricane made an unexpected direct hit on Galveston,Texas,killing at least 6 000 people.Vastly improved hurricane warnings explain the different circumstances at either end of the 20th century—residents of Galveston had no advance warning that a storm was approaching,while residents of Biloxi had been warned days in advance of Georges’s approach,allowing for extensive safety precautions.
At the same time that people in Biloxi were thankful for the advance warning,some residents of New Orleans,Louisiana,120 km to the west,were less satisfied.A day before Georges made landfall,forecasters were predicting that the hurricane had a good chance of striking New Orleans.Because much of New Orleans lies below sea level,the city is at risk for flooding.In addition,because New Orleans has a large population in vulnerable locations,emergency management officials must begin evacuations well before a storm strikes.But evacuation costs money:Businesses close,tourists leave,and citizens take precautionary measures.The mayor of New Orleans estimated that his city’s preparations for Georges cost more than 50 million.After the full fury of Georges missed New Orleans,some residents questioned the value of the hurricane forecasts in the face of such high costs.
The differing views on the early warnings for Hurricane Georges illustrate some of the complexities involved in predicting disasters.Disaster prediction is more than just forecasting the future with advanced technology—it is also a process of providing scientific information to the government officials and other decision makers who must respond to those predictions.
In general,the process has three phases.First,there is the challenge of forecasting the event itself.In the case of Georges,scientists worked to predict the future direction and strength of the hurricane days in advance.
A second important challenge is communicating the forecast to decision－makers.Because forecasts are always uncertain,a central factor in disaster predictions is communicating this uncertainty.Uncertainty is usually described in terms of odds or probabilities,much like daily weather forecasts.The media plays an important role in communicating predictions and their uncertainty to the public.
The third part of the process is the use of predictive information by decision makers.Even the most accurate information is of little value if the decision maker does not use it appropriately,for example in deciding whether to order an evacuation.If there is a breakdown in any of these three phases of prediction,the result is increased danger and a higher risk of loss of life.The underlined word“calamity”refers to ______.
| A．nature | B．thunderstorms | C．disaster | D．dangers |
According the passage,the purpose of disaster prediction is to______.
| A．demonstrate the power of advanced technology |
| B．bring out the truth between life and death |
| C．prevent such natural disasters from happening |
| D．reduce human casualties and loss of property |
Which of the following areas suffered the most severe damage?
| A．Biloxi,Mississippi. | B．Gulf Coast of U. S. |
| C．Galveston,Texas. | D．New Orleans. |
XI'AN - China's conservation work for the endangered crested ibis（朱鹮）is facing new challenges, including an increasing mortality rate due to inbreeding, and the conflict between the need to expand natural habitats and local communities' economic interests, bird experts have warned.
The crested ibis, once widespread in Japan, China, Russia and the Korean Peninsula, almost 
became extinct in the first half of the 20th century.
Before 1981, when seven crested ibis were accidentally found in Yangxian county, in Northwest China's Shaanxi province, academics thought the species had been extinct in China for almost 17 years.
Due to the huge effort put into species protection since 1981, the number of crested ibis in China has risen to an estimated 1,617, including 997 in the wild, the State Forestry Administration said at a meeting on crested ibis protection in Xi'an on Monday.
However, although the ibis population exceeds 1,000, the birds are still not free from the threat of extinction, said Fang Shengguo, director of the State Conservation Center for Gene Resources of Endangered Wildlife at Zhejiang University.
“Ornithologists used inbreeding in the early stages of protection so that numbers of the precious birds could increase quickly, but that method had conseque
nces,” Fang said.
"Studies have proved that as a result of inbreeding, crested ibis have the lowest genetic diversity of all endangered birds," Fan
g said.
"It means a high mortality rate and more physical defects for hatched chicks."
“The government should collect genetic information from all crested ibis and establish a genetic database as soon as possible, then design a scientific mating plan for the species,” Fang said.
So far, about 90 percent of crested ibis live in Shaanxi province, and fewer than 140 ibis live in three zoos in other parts of the country, including Beijing Zoo, according to Liu Dongping, an assistant researcher at the National Bird Banding Center of China, which is affiliated to the Chinese 
Academy of Forestry.
The bird has lost the ability to migrate, he said, adding that if an unexpected natural disaster occurred in Shaanxi province or an infectious disease spread through the area, the ibis population could be greatly reduced.
Experts also warned that the increased population of ibis, whether in the wild or in captivity, requires a 
larger and more varied natural habitat.
Rampant hunting, the massive loss of habitat caused by deforestation and the overuse of pesticides, which killed aquatic insects on which the ibis feed, are believed to be the main reasons for the sharp reduction in the ibis population before 1981.
So, in 1983, a State-level natural reserve was set up in Shaanxi province to protect the bird. But the struggle for living space between human and animal has never stopped, said Lu Baozhong, deputy director of the Shaanxi Crested Ibis Conservation Station.
"For example, ibis often look for loaches in farmers' rice fields. Sometimes their claws trample the rice seedlings. In another case, villagers discovered some land with abundant mineral resources which happened to be a habitat for ibis," said Lu, who has devoted 30 years to ibis protection.
A long-term win-win solution for ibis and local communities needs to be developed, one that would provide ecological compensation for local residents, Lu said.. What’s the best title for the passage?
| A．The Rare Bird in China | B．New Problems for the Crested Ibis |
| C．The Way to Save the Crested Ibis | D．The Reason for the Crested Ibis’s Extinction |
Which of the following statement is TRUE ?
| A．The crested ibis is a native of China. |
| B．Before 1981, the crested ibis was extinct in China. |
| C．The crested ibis is now free from the threat of extinction. |
| D．Most of the crested ibis are in Shaanxi province. |
. Why did the experts adopt the way of inbreeding to protect the crested ib
is?
| A．To increase the mortality rate. |
| B．To increase the number of the crested ibis. |
| C．To get more physical defects for hatched chicks |
| D．To have the lowest diversity of the endangered bird. |
. What may be the reason for the reduction in the population of the crested ibis before 1981?
| A．inbreeding | B．economic development |
| C．over hunting | D．sandstorm |
. What can we learn from the passage?
| A．Due to our great efforts, the crested ibis lives in the wild well. |
| B．Scientists will choose a better habitat for the crested ibis. |
C．The problems of the crested ibis have not been solved now. |
| D．The government has established a genetic database of the crested ibis. |
Being a mother is apparently not like it was in the good old days.
Today’s parents yearn for the golden age that their own mothers enjoyed in the 1970s and 1980s, researchers found. Mothers have less time to themselves and feel under greater pressure to handle work and family life than the previous generation. As a result, 88 per cent said they felt guilty about the lack of time they spent with their children.
The survey of 1,000 mothers also found that more than a third said they had less time to themselves than their mothers did – just three hours a week or 26 minutes a day. And 64 per cent said this was because they felt they ‘had’ to go out to work, while nearly a third (29 per cent) said they were under constant pressure to be the ‘perfect mother’, the report found.
Other findings showed social networking and parenting websites, as well as technology such as Skype, were important in providing help and support among female communities. Kate Fox, a member of the Social Issues Rese
arch Centre, which conducted the survey for Procter & Gamble, said: ‘With increasing pressure on 
mothers to work a “double shift” — to be the perfect mother as well as a wage-earner — support networks are more important than ever.
It comes as a separate report examining childcare in the leading industrialised nations found that working mothers in Britain spend just 81 minutes a day caring for their children as a ‘primary activity’. Mothers who stay at home, on the other hand, manage twice as much time – more than two and a half hours – looking after their offspring, according to the Organisation for Economic Co-operation and Development.
Critics say the pressure on women to work long hours, and leave their offspring in the hands of nurseries or childminders, is putting the well-being of their children at risk.
The study also reveals that, despite the fact that more and more modern mothers go out to work, the burden of childcare still falls on them - even if their husband is not in work. A father who is not in work tends to spend just 63 minutes a day looking after his child - 18 minutes less than a mother who goes out to work. Working fathers spare less than three quarters of an hour with their children.. What does the passage mainly talk about?
| A．The good old days of mothers in the 1970s and 1980s. |
| B．The great sufferings of today’s children. |
| C．The statistics of working mothers and full-time mothers. |
| D．The big problems that today’s working mothers face. |
. What does the underlined phrase “yearn for” probably means ___________.
| A．hate | B．miss | C．abandon | D．control |
Which of the following problems is NOT mentioned in the passage?
| A．Today’s mothers have less time left for their children and themselves. |
| B．The working mothers can hardly strike the balance between work and family. |
| C．Most of the mothers can not control their husbands nowadays. |
| D．Modern fathers do not spend enough time with their children. |
From para. 4, we can infer that ___________.
| A．working mothers can seek help on line |
| B．Skype is a very famous expert in studying social issues |
| C．working mothers’ double shift is to be a wife and a mother |
| D．Kate Fox has opened a website offering help to working mothers |
. What critics say means that _____________.
| A．it is wise for working mothers to put their kids in nurseries or childminders |
| B．too much time in nurseries or childminders is bad for kids’ mental and physical health |
| C．nurseries or childminders are dangerous places for children |
| D．children do not like nurseries or childminders at all |
In a surprising discovery about where higher life can survive, scientists have found a shrimp -like creature and a jellyfish swimming beneath an Antarctic ice sheet.
About 180 meters below the ice where no light can get through, scientists had figured nothing much more than a few microbes (微生物) could exist.
That’s why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica. A curious shrimp-like creature came swimming by and then parked itself on the camera’s cable. Scientists also pulled up a tentacle (触须) they believe came from a jellyfish.
“We were operating on the presumption that nothing’s there.” said NASA ice scientist Robert Bindschadler. “It was a shrimp you’d enjoy havin
g on your plate.”
“We were just gaga (狂热的) over it,” he said when talking about the 7.5cm long, orange creature starring in their two-minute video. Technically, it’s not a shrimp. It’s a Lyssianasid amphipod, which is distantly related to the shrimp.
The video is likely to inspire experts to rethink what they know about life in harsh environments. And it has scientists thinking that if shrimp-like creatures can live below 180 meters of Antarctic ice in freezing dark water, what about other cold places? What about Europa, a frozen moon of Jupiter?
Cynan Ellis – Evans, a scientist of the British Antarctic Survey called the finding fascinating. He said it was possible the creatures swam in from far away and don’t live there permanently.
But Kim, who is a co-author of the study, doubts it. “The site in West Antarctica is at least 19 km from open seas. Bindschadler drilled a 20 cm-wide hole and was looking at a tiny amount of water. That means it’s unlikely that two creatures swam from great distances and were captured randomly in that small area,” she said.
“Yet scientists were puzzled at what the food source would be for these creatures. While some microbes can make their own food out of chemicals in the ocean, complex life like the shrimp can’t,” Kim said.
“So how do they survive? That’s the key question.” Kim said.
“It’s pretty amazing when you find a huge puzzle like that on a planet where we thought we know everything.” Kim said.. Scientists had believed that harsh environments could only have been populated by ______ .
| A．jellyfish | B．mammals | C．microbes | D．shrimp-like creatures |
According to Kim, the shrimp-like creature _________ .
| A．swam great distances to Antarctic | B．has always lived in the area |
| C．gradually evolved from shrimps | D．has nothing in common with shrimps |
The finding is significant in that __________.
| A．it marks NASA’S first Antarctic biological study |
| B．it proves there is marine life in the Antarctic |
| C．it could inspire further study of life in harsh environments |
| D．it shows that Lyssianasid amphipod is closely related to shrimps |
. The last three paragraphs suggest that __________.
| A．researchers will look at the places the creatures came from |
| B．ice scientists will drill deeper to find more creatures |
C．scientists know very little about the planet they live o n |
| D．further research will be done about what the creatures live on |
If English means endless new words, difficult grammar and sometimes strange pronunciation, you are wrong. Haven’t you noticed that you have become smarter since you started to learn a language?
According to a new study by a British university, learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter. This is the area of the brain which processes information. It is similar to the way that exercise builds muscles.
The study also found the effect is greater, the younger people learn a second language.
A team led by Dr Andrea Mechelli, from University College London, took a group of Britons who only spoke English. They were compared with a group of “ea
rly bilinguals” who had learnt a second language before the age of five, as well as a number of later learners.
Scans showed that grey matter density(密度)in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference.
“Our findings suggest that the structure of the brain is changed by the experience of learning a second language,” said the scientists.
It means that the change itself increases the ability to learn.
Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills. “Having two languages gives you two windows on the world and makes the brain more flexible,”he said. “You are actually going beyond language and have a better understanding of different ideas.”
The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of two and 34. Reading, writing, and comprehension were all tested. The results showed that the younger they started to learn, the better. “Studying a language means you get an entrance to another world,” explained the scientists... The main subject talked about in this passage is_______.
| A．science on learning a second language | |
B．man's ability of learning a  second language |
|
| C．language can help brain power | D．language learning and maths study |
..In the second paragraph, the writer mentions “exercise” in
order to_______.
| A．say language is also a kind of physical labor |
| B．prove that one needs more practice when he (she) is learning a language |
| C．to show the importance of using the language when you learn the language |
| D．make people believe language learning helps grey matter work well |
.. We may know from the scientific findings that______
__.
| A．the earlier you start to learn a second language the higher the grey matter density is |
| B．there is no difference between a later second language learner and one who doesn't know a second language |
| C．the experience of learning a second language has bad effect on people's brain |
| D．the ability of learning a second language is changing all the time |
.. In the last two paragraphs, the author wants to tell us that_______.
| A．learning a second language is the same as studying maths |
| B．early learning of a second language helps you a great deal in study other subjects |
| C．Italian is the best choice for you as a second language |
| D．you’d better choose the ages between 2 and 34 to learn a second language |
Grown-ups know that people and objects are solid. At the movies, we know that if we reach out to touch Tom Cruise, all we will feel is air. But does a baby have this understanding?
To see whether babies know objects are solid. T. Bower designed a method for projecting an optical illusion(视觉影像)of a hanging ball. His plan was to first give babies a real ball, one they could be expected to show surprised in their faces and movements, All the 16 to 24-week-old babies tested were surprised when they reached for the illusion and found that the ball was not there.
Grown-ups also have a sense of object permanence. We know that if we put a box in a room and lock the door, the box will still be there when we come back. But does a baby realize that a ball that rolls under a chair does not disappear and go to never-never land?
Experiments done by Bower suggest that babies develop a sense of object permanence when they are about 18 we
eks old. In his experiments, Bower used a toy train that went behind a screen. When 16-week-old and 22-week-old babies watched the toy train disappear behind the left side of the screen, they looked to the right, expecting it to re-appear. If the experiment took the train off the table and lifted the screen, all the babies seemed surprised not to see the train. This seems to show that all the babies had a sense of object permanence. But the second part of the experiment showed that this was not really the case. The re-searcher substituted(替换) a ball for the train when it went behind the screen. The 22-week-old babies seemed surprised and looked back to the left side for the train. But the 16-week-old babies did not seem to notice the switch(更换).Thus,the 16-week-old babies seemed to have a sense of “something permanence,” while the 22-week-old babies had a sense of object permanence related to a particular object.The passage is mainly about .
| A．babies’sense of sight | B．effects of experiments on babies |
| C．babies’understanding of objects | D．different tests on babies’feelings |
.In Paragraph 3, “object permanence” means that when out of sight, and object .
| A．still exists | B．keeps its shape | C．still stays solid | D．is beyond reach |
.What did Bower use in his experiments?
| A．A chair | B．A screen | C．A film | D．A box |
. Which of the following statements is TRUE?
| A．The babies didn’t have a sense of direction. |
| B．The older babies preferred toy trains to balls. |
| C．The younger babies liked looking for missing objects |
| D．The babies couldn’t tell a ball from its optical illusion. |
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