Read the article and select the best answer. Article: What do you do if you are hit in the mouth and one of your teeth is knocked out? A dentist may be able to put the tooth back in for you, but you have to get to the dentist first.In the meantime, you have to store the tooth so that it will stay healthy. The simplest thing to do is put the tooth back into your mouth, or you could put it in milk.Frank Courts, a dentist at the University of Florida, worked with other researchers to find the safest way of keeping knocked-out teeth.He tried putting teeth into milk, into water, and into cell-culture medium .He also tried, just drying the teeth in the open air.He used teeth that had to be removed from people's mouths for various reasons.The teeth were put into one of the solutions or stored in the air for one hour.Then cells from the root of the teeth were scraped-off the teeth.Dr.Courts and the others then studied how healthy these cells were. The cell-culture medium worked best to keep a knocked-out tooth healthy outside the mouth.However, few people keep cell-culture medium handy at home or in school. The next best thing was milk.But Dr.Courts said that the best thing of all was to wash the tooth and put it right back into its socket in the mouth.For some people, though, this is just too painful or upsetting.So milk will do, until you get your tooth (and your mouth)to a dentist. Question: "Dr.Courts said that the best of al1 was to wash the tooth and put it right back into its socket in the mouth."In the sentence, the word "best" means_. Options: A: cheapest and healthiest B: least painful and cheapest C: quickest and least painful D: easiest and healthiest
D

(Question)
Read the article and select the best answer. Article: Computer people talk a lot about the need for other people to become "computer-literate." But not all experts agree that this is a good idea. One pioneer, in particular, who disagrees is David Tebbutt, the founder of Computertown UK. Although many people see this as a successful attempt to bring people closer to the computer. David does not see _ that way. He says that Computertown UK was formed for just the opposite reason, to bring computers to people and make them "people-literate." David Tebbutt thinks Computertowns are most successful when tied to a computer club but he insists there is an important difference between the two. The clubs are for people who have some computer knowledge already. This frightens away non-experts, who are happier going to Computertowns where there are computers for them to experiment on, with experts to encourage them and answer any questions they have. They are not told what to do, they find out.The computer experts have to learn not to tell people about computers, but have to be able to answer all questions people ask. People don't have to learn computer terms , but the experts have to explain in plain language. The computers are becoming "people-literate." Question: David Tebbutt started Computertown UK with the purpose of _ . Options: A: making better use of computer expert B: improving computer programs C: increasing omputersales D: popularising computers
(Answer)
D

Ques: Read the article and select the best answer. Article: Not many years ago, some American farmers began to complain about hawks . The hawks were killing chickens. The farmers did not know what to do. They went to the government officials and asked for help. The officials said, " We'll pay you for each hawk you kill." The farmers began to kill the hawks. Many hawks were killed, but the farmers now had another problem. The field mice were growing in number and they were eating up the farmers' corn. Hawks eat not only chickens but also field mice. They eat more field mice than chickens. But if the farmers had known that, they would not have upset the balance of nature. In one part of the USA, there are deer which eat a kind of wild rose. The deer are eaten by mountain lions. The number of deer, mountain lions, and wild rose does not change much if people stay away from them. If there are too many deer, mountain lions will increase rapidly in number and kill many deer. If there are too many mountain lions, there will be fewer deer and there will be more roses. It is always necessary for us to keep the balance of nature. The government once killed almost all the mountain lions to protect the deer. Soon there were so many deer that they ate up all the wild roses. Then they began to eat the green leaves of young trees which were important to the farmers. So the farmers protected their trees from the deer. The deer had nothing to eat, and many of them died. The government learned a valuable lesson from nature. Question: Why did American people have to protect their trees? Options: A: Because the mountain lions destroyed the trees. B: Because there were so many deer that they began to eat the green leaves. C: Because they wanted the trees to grow well. D: Because the trees are more important than the deer.
Ans: B

Ques: Read the article and select the best answer. Article: BEIJING--As China scrambles to respond to the choking smog that has _ Beijing in recent weeks, authorities in several major cities are experimenting with carbon trading platforms. The schemes are one effort to get control over greenhouse gases in an economy still hungry for cheap energy. It has been a persistent concern in recent years, but the spiking pollution levels in January are sparking a public outcry. Emissions from coal-fired electricity plants and busy factories are part of the problem that officials hope to get control over through carbon trading platforms. Seven cities are expected to open carbon markets later this year, including Tianjin. "The government has decided to start with programs because the carbon trading is something new to China," said David Tang, secretary of the board of the Tianjin Carbon Exchange. "So we want to have a number of programs to explore the use of the market." said Tang. China wants to launch a national carbon trading program by 2016. If it is successful, analysts say, the program would be one of the largest in the world and would help the country meet its target of cutting carbon dioxide emissions by 45 percent within seven years. The platforms allow companies to earn credits for lowering greenhouse gas emissions, which can then be traded. If it works, it would encourage for-profit businesses to invest in green technology. As public concern builds pressure for the government to find a solution, Wu Changhua, greater China director of the Climate Group, says there is a broad shift under way in how Chinese weigh their quality of life. China has long put economic growth ahead of environmental concerns, making it the world's biggest polluter. Carbon trading supporters hope that the markets could be one way to curb pollution and keep the economy growing. Question: Tang's attitude towards carbon markets is _ . Options: A: unknown B: indifferent C: optimistic D: pessimistic
Ans:
C