The common cold is the world's most widespread illness, which is plagues(疫病) that flesh receives.
The most widespread mistake of all is that colds are caused by cold. They are not. They are caused by viruses(病毒) passing on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in isolated Arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.
During the First World War soldiers who spent long periods in the trenches(战壕), cold and wet, showed no increased tendency to catch colds.
In the Second World War prisoners at the notorious Auschwitz concentration camp(奥斯维辛集中营), naked and starving, were astonished to find that they seldom had colds.
At the Common Cold Research Unit in England, volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty room. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.
If, then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter? Despite the most pains—taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.
No one has yet found a cure for the cold. There are drugs and pain suppressors(止痛片) such as aspirin, but all they do is to relieve the symptoms(症状).The writer offered _______ examples to support his argument.
| A．4 | B．5 | C．6 | D．3 |
Which of the following does not agree with the chosen passage?
| A．The Eskimos do not suffer from colds all the time. |
| B．Colds are not caused by cold. |
| C．People suffer from colds just because they like to stay indoors. |
| D．A person may catch a cold by touching someone who already had one. |
Arctic explorers may catch colds when ________.
| A．they are working in the isolated Arctic regions |
| B．they are writing reports in terribly cold weather |
| C．they are free from work in the isolated Arctic regions |
| D．they are coming into touch again with the outside world |
The passage mainly discusses ________.
| A．the experiments on the common cold |
| B．the fallacy about the common cold |
| C．the reason and the way people catch colds |
| D．the continued spread of common colds |
Many science fiction stories tell about explorers arriving in a new world. The explorers then use some kind of high-tech device to test for breathable air or signs of life. But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or e-DNA for short. Scientists can use it to identify rare or invasive species, study bio-diversity or estimate fish populations with just a little air or water.
Ryan Kelly is an ecologist at the School of Marine and Environmental Affairs at the University of Washington in Seattle. He works in a laboratory there with other researchers. They study the genetic material released by living creatures. “Essentially we can take a sample of soil or air — and in our case — water, and we can sequence（to arrange the order of genes）the DNA out of it and tell you what is there.”
Ryan Kelly says he and his research team are studying water samples collected from Puget Sound. He says the cost of gene sequencing has “been reduced greatly in recent years.” That makes DNA testing more widely available.
Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature.
Caren Goldberg heads the new e-DNA lab at Washington State University in Pullman, Washington. She is one of the first biologists in the northwestern United States to take the technology from the testing phase to actually using it.
“It is extremely useful for species that are really hard to find. I have spent many hours looking for species that I was pretty sure were there — looking under rocks, looking in water, doing all kinds of surveys.”
Caren Goldberg sees e-DNA as a way to get answers more efficiently, safely and with less destruction compared to traditional survey techniques. Until recently, scientists depended on diving deep, netting or using an electric current to temporarily catch fish.
“We’re absolutely at this point where proof-of-concept has been established. I don't think everyone necessarily is ready for it yet, but I think the majority of people are.”
This newer way to identify what lives in the environment is becoming popular around the world. Animal experts in Vietnam are using the e-DNA to find the last, wild Yangtze giant softshell turtles. One researcher on the Caribbean island of Trinidad is using the sampling technology to find endangered golden tree-frogs. And in Madagascar, it is being used to identify amphibian diseases.
Ms. Goldberg has used e-DNA testing to confirm the local extinction, disappearance, of a leopard frog in the American state of Idaho. She has also been asked to document the spread of the New Zealand mud-snail in the state of Washington. The creature has been found in lakes and other waterways across the state.
Now, the U.S. Bureau of Land Management wants Caren Goldberg to look for the Columbia spotted frog in two other western states. The rare amphibian is a candidate for the federal government's threatened species list.
Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the old-fashioned field work could soon be more targeted.
A related research goal is to show how long environmental DNA can last and how far it can travel in different environments.Paragraph One is intended as _____ of the passage.
| A．the main idea |
| B．the introduction of the topic |
| C．a supporting detail of the main idea |
| D．a contrast of the main idea |
What has made E-DNA magic is that with E-DNA_____.
| A．you are likely to find information about a species with a little air, water, or soil |
| B．some kind of high-tech device can be used to test for breathable air or signs of life |
| C．you are able to get answers more efficiently, safely though with more damage |
| D．the cost of gene sequencing has been reduced greatly in recent years. |
So far, the technique of E-DNA has NOT helped scientists search for ______.
| A．wild Yangtze giant soft-shell turtles |
| B．endangered golden tree-frogs |
| C．the local extinction of a leopard frog |
| D．the spread of the New Zealand mud-snail |
Despites its advantage, we are still not sure of something about E-DNA. That is _____ .
A. the lasting time and the spreading area of E-DNA
B .the lasting time of E-DNA and too many species for E-DNA
C. too many candidates for E-DNA and the lasting time of E-DNA
D. robots and old-fashioned field work’s replacing E-DNAThe passage can be sorted as a(n) _____.
| A．science fiction | B．experiment report |
| C．science report | D．bio-diversity discovery |
Have you seen a historical film recently? Do you think it was accurate? Some say that there is no such thing as a historical film. In many cases, Hollywood film-makers simply change the facts. Just look at these supposedly “historical” films.
1. The Patriot
The film was released in 2000 and was directed by Ronald Emmerish and starred Mel Gibson. It is set near Charleston, South Carolina, during the American Revolutionary War(1775—1783) and follows the story of Benjamin Martin and his fight for American freedom against the British. The film was criticized for inventing and exaggerating British cruelty. The most criticized scene was one showing the burning of a church containing people of the town, of which there is no historical record. Another historical inaccuracy was the description of American-owned slaves being freed to serve with the American forces. In reality, many slaves ran away from their American owners and fought with the British against the Americans.
2. Brave Heart
The film(1995) starred Mel Gibson was directed by Toby Reisz. It is based on the life of Scottish national hero William Wallace and his fight against English rule in Scotland during the 13th century. The film includes an affair between William Wallace and Princess Isabella (based on Isabella of France). The film implies she is a mother-to-be when William Wallace will be killed. However, historically, the real Isabella was a child of nine still living in France at this time, never having met Wallace. The film also caused controversy because of its anti-English nature. Apparently, when the film was shown in Glasgow, there was a loud noise made by happy American audience.
3. U-571
This 2000 film was directed by Jonathan Mostow and starred Mathew MacConaughey, Havey Keitel and Jon Bon Jovi. It took place during the Second World War(1939—1945). In the film, a German submarine(warship underwater) is boarded in 1942 by American soldiers who made themselves up as Germans. They took away the German submarine’s code-language machine, which, in the film, helps the Americans get many secret messages from Germany. However, the film was heavily criticized because it was actually the British who got the machine in May 1941 when they boarded U-110. The movie was also criticized for showing a scene where the U-boat sailors killed American sailors in the water after their ship sunk, which is, in 99% cases, impossible to happen.
4. The 300 Spartans
The latest controversy surrounds the film The 300 Spartans. The film (directed by Zack Synder) tells the story of the battle between the Greeks and Persians in 480 BC. It is regarded as a key event in the birth of western democracy(民主) by some historians. In the film, 300 Spartans under the king fight against the enemies, 120,000 Persians led by Emperor Xerxes. The tiny Spartan forces repeatedly gain advantage over the invaders. These actions delays the Persians’ attack and gives the Greek armies enough time to prepare for the defense of Athens. But the Iranians (modern-day Persians) aren’t happy with the film. They say the film describes them as savage, killing-loving, and war-loving.This article mainly _____.
| A．praises four “historical” films |
| B．shares with us four great movies |
| C．tells the readers about the inaccuracy of four “historical” films |
| D．expresses the writer’s positive attitude towards the “historical” films |
As far as time is concerned, the war in _____ broke out earliest.
| A．The 300 Spartans | B．U-571 |
| C．The Patriot | D．Brave Heart |
Mel Gibson, a great American actor, starred in _____.
| A．The Brave Heart and U-571 |
| B．The Patriot and Brave Heart |
| C．The 300 Spartans and Brave Heart |
| D．The Patriot and The 300 Spartans |
The passage probably comes from a(n)_____.
| A．film poster | B．fashion magazine |
| C．film review | D．tour guide |
Many families take their children on vacation. They will usually travel for a few days or weeks during school breaks. But Julie and Tim Rivenbark planned a longer vacation with their two children—the Rivenbark family is on a one-year trip around the world. They plan to visit 30 countries in all.
Right now, the four travellers are about halfway through their trip. Ms. Rivenbark says they are trying to see as much of the world as they can. She says “we have been through Europe, southern Africa, now we are kind of working our way through Asia. So we have been to a bunch of big cities, like Dubai, Johannesburg, Rome and Bangkok.”
The family has also spent time floating in kayaks(long narrow boats) in Italy, flying in hot air balloons in Myanmar, hiking to the Everest Base Camp in Nepal and going on a journey to see or hunt animals in South Africa.
Mr. Rivenbark says the family has also ridden on ostrich birds, elephants, and camels. But, he says, one of the most interesting experiences of the trip has been meeting new people.
“People have been extremely friendly, very welcoming and love our kids—interacting with them and their reaction to see our kids enjoying themselves in their country.”
Eleven-year old Tyler says he has enjoyed learning about the people they have met. “I learned in Africa that people have very different lifestyles compared to Americans.” His sister, 9-year-old Kara, discovered that she liked Thai food.
Ms. Rivenbark says that the extended trip teaches the children a lot more than short visits would have. “I think that the longer we travel, the more impact it has on how they see the world. I can see them changing more than they can see themselves.”
It took the family a year to prepare for the trip. They had to sell their house and cars. Ms. Rivenbark quit her job and her husband is using unpaid leave. They carry small bags filled with lightweight clothing and whatever else they need. Ms. Rivenbark says she enjoys being able to carry everything she needs on her back. She says she does not miss the things she has back home. “What has become more important is making these memories as a family and taking those with us instead.” Tyler and Kara each have iPads so they can communicate with teachers to stay current with their schoolwork. Tyler is also creating a 365-day video blog.
The Rivenbarks will continue to head east for the next six months. They plan to visit Laos, Cambodia, Vietnam, China and Australia. To follow their adventures, visit their website: earthtrekkers.com.What makes the Rivenbarks different from other families is that _____.
| A．they have their family trips during the children’s holidays |
| B．they have carefully planned their family trips for holidays |
| C．they plan to have a tour around the world without their children |
| D．they tour around the world with their kids not going to class |
During the travel, _____ impressed the kids as well as the parents most.
| A．floating in kayaks in Italy |
| B．hiking to the Everest Base Camp in Nepal |
| C．interacting with different people |
| D．riding on elephants and camels |
The underlined word in Paragraph 7 extended is closest in meaning to _____.
| A．expanded | B．contented |
| C．shortened | D．intended |
We can infer from the passage that _____.
| A．It will take the family one year to prepare and finish their travel |
| B．The kids are finishing their current study with the help of the Internet |
| C．The family are likely to stay in Asia for the second part of their trip |
| D．To afford such a trip around the world is really something easy for the family |
The passage is meant to _____.
| A．share with the readers an extraordinary family trip |
| B．introduce some great parents and their jobs |
| C．remind us of the pleasure of getting close to nature |
| D．inform us of the benefits of travelling around the world |
A recent study, while showing a generally positive attitude toward science, also suggests a widespread worry that it may be “running out of control”. This idea is dangerous.
Science can be a force for evil as well as for good. Its applications can be channeled either way, depending on our decisions. The decisions we make, personally or collectively, will determine the outcomes of science. But here is a real danger. Science is advancing so fast and is so strongly influenced by businesses that we are likely to believe whatever decisions we come to will make little difference. And, rather than fighting for the best possible policies, we may step back and do nothing.
Some people go even further. They say that despite the moral and legal objections, whatever is scientifically possible will be done-somewhere, sometime. They believe that science will get out of control in the end. This belief is dangerous too, because it fuels a sense of hopelessness and discourages them from making efforts to build a safer world.
In our interconnected world, the lack of agreement in and out of the world of science can lead to the failure to control the use of science. Without a common understanding, the challenges of “controlling” science in this century will be really tough. Take human cloning for example. Despite the general agreement among scientists on its possible huge impact(影响) on traditional moral values, some countries still go ahead with the research and development of its related techniques. The outcomes are hard to predict.
Therefore, discussions on how science is applied should be extended far beyond scientific societies. Only through the untied efforts of people with hope, can we be fully safe against the misuse of science and can science best serve mankind in the future.What can we conclude from the recent study?
| A．People think highly of science. |
| B．People hold mixed opinions about science. |
| C．Science is getting dangerously out of control. |
| D．Science is used for both good and bad purposes. |
According to the passage, what will happen if we hold that science is getting beyond control?
| A．The development of science will hopelessly slow down. |
| B．Businesses will have even greater influence on science. |
| C．The public will lose faith in bringing about a bright future. |
| D．People will work more actively to put science under control. |
The discussion should reach beyond scientific societies because_______
| A．scientists have failed to predict the outcomes |
| B．the ties between different areas need strengthening |
| C．united efforts are necessary for the development of science |
| D．people need to work together to prevent the bad use of science |
What is the main idea of the passage?
| A．Science and its applications bring us many dangers. |
| B．The development of science mostly lies in people's attitudes. |
| C．Mankind can largely take control of science with their efforts. |
| D．The future of science will be influenced by the dangerous ideas. |
Liverpool, my hometown, is a unique city. It is so unique that in 2004 it became a World Heritage(遗产) Site.
I recently returned to my home city and my first stop was at a museum on the River Mersey. Blanketed in mist(薄雾), Victorian architecture rose from the banks of the river, responded to the sounds of sea-birds, and appeared unbelievably charming. When I headed toward the centre, I found myself surrounded by buildings that mirror the best palaces of Europe. It is not hard to imagine why, on first seeing the city, most visitors would be overpowered by the beauty of the noble buildings, which are solid signs of Liverpool’s history.
As if to stress its cultural role, Liverpool has more museums and galleries(美术馆) than most cities in Britain. At Walker Art Gallery, I was told that it has the best collections of Victorian paintings in the world, and is the home of modern art in the north of England. However, culture is more than galleries. Liverpool offers many music events. As Britain’s No.1 music city, it has the biggest city music festival in Europe, and its musicians are famous all over the world. Liverpool is also well-known for its football and other sports events. Every year, the Mersey River Festival attracts thousands of visitors, making the city a place of wonder.
As you would expect from such a city, there are restaurants serving food from around the world. When my trip was about to complete, I chose to rest my legs in Liverpool’s famous Philharmonic pub(酒馆). It is a monument to perfection, and a heritage attraction itself.
Being a World Heritage Site, my home city is certainly a place of “outstanding universal value”. It is a treasure house with plenty of secrets for the world to explore.Visitors who see the city for the first time would be deeply impressed by________
| A．its charming banks | B．its famous museums |
| C．its wonderful palaces | D．its attractive buildings |
The third paragraph is developed mainly by______
| A．providing different examples |
| B．following the order of space |
| C．making comparisons |
| D．analyzing causes |
The author uses the Philharmonic pub to prove that_______
| A．Liverpool is a well-known city for its restaurants |
| B．Liverpool is an impressive place full of attraction |
| C．a pub is a wonderful place for visitors to relax themselves |
| D．a pub is a perfect choice for visitors to complete their journey |
What is the passage mainly about?
| A．The universal value of the world heritage in Liverpool |
| B．The exciting experience of the author in Liverpool |
| C．The special cultural atmosphere of Liverpool |
| D．The beautiful historic sites of Liverpool |