We are always attracted by the sea. From it we can get food, minerals and treasures. For thousands of years, we just sailed on it but couldn't go far under its surface. We want to explore deep into the sea. However, we are not fish. We must breathe, so we can't stay underwater for long. To explore deep water, we face even more dangers and problems. A diver trying to stay underwater for a long time must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a special pipe. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea, so his body is under great pressure. When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to the surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles . The diver is then suffering from a kind of illness. This kind of illness can cause a diver great pains and even kill him. We can infer from the text that _ . A) deep sea divers should be in good health B) divers usually explore deep sea for treasures C) diving underwater too quickly causes a kind of illness D) there is a special mixture of gases under the sea
A
The hallways cast shadows since the only light available was from open windows and doorways. The lights are turned off to save money on the electricity bill. The rooms, borrowed rooms, were not like being in hospitals. There were no color1s on the walls, or framed pictures for us to be distracted by. There were no magazines to look at, or pens to write with. There were no plants, or matching chairs, or paper spread over the examining tables. By the second day of a medical mission hosted by PAMS (Peruvian American Medical Society) in Abancay, Peru, it was easy to start adapting and taking advantage of what we did have inside the hospital. I learned to reuse a brown paper bag in order to transport items the entire week. I hid my mask, hat and shoe covers whenever I needed to leave the surgery floor to be sure they were available again. The one towel was creatively folded so that we could keep using it. By the third day, I realized how wasteful I was the first day. I had thrown away a rubber band that had held a pile of envelopes, a used water bottle, and worst of all: we had used two gloves instead of one. The free medical care the local Indians were receiving today was a new experience for many of the people. PAMS is a nation-wide, non-profit organization that helps bring Peruvian and American doctors together to offer medical treatment and education to towns in Peru. Several other towns including Cusco, Lima, and Trujillo also benefit from these medical missions. All the volunteers donate their own time and services. The mission is organized for two weeks, once or twice a year. Volunteers are encouraged to stay as long as possible. Abancay is a beautiful town, 7,000 feet above sea level with a population of 80,000 people. This first week, there are 19 other people who volunteered to help those less fortunate. Many of the volunteers stayed in the same hotel together and many were paired up to have a roommate. On the first night, the mayor welcomed everyone as the high school children performed a dance... We can guess that the author will, in the rest of the passage, write about _ . A) her friendship with locals B) the scenery in Peru C) the progress of PAMS D) her work
D
Q: Honesty is the best policy, as the English saying goes. Unfortunately, honesty often leaves us when no one is watching, British psychologists reported last week. Researchers at UK's Newcastle University set up an experiment in their psychology department's coffee room. They set a kettle, with tea, coffee and milk on the counter and hung up a sign listing the price for drinks. People helping themselves to a cup of tea were supposed to put a few cents in the box nearby. The scientists hung a poster above the money box, and changed each week between pictures of gazing eyes and pictures of flowers. The researchers found that staff paid 2.76 times more for their drinks when the image of the eyes was hung. "We were shocked by the size of the effect," said Gilbert Roberts, one of the researchers. Eyes are known to be a powerful perceptual signal for humans, scientists say. "Even though the eyes were not real, they still seemed to make people behave more honestly," said Melissa Bateson, a behavioral biologist and leader of the study. Researchers believe the effect throws light on our evolutionary past. It may arise from behavioral characteristics that developed when early humans formed social groups to strengthen their chances of survival. For social groups to work, individuals had to co-operate, rather than act selfishly. "There's an argument that if nobody is watching us, it is in our interests to behave selfishly. But when we're being watched we should behave better. So people see us as co-operative and behave the same way towards us," Bateson said. The new finding indicates that people have a striking response to eyes. That might be because eyes and faces send a strong biological signal we have evolved to respond to, Bateson said. The finding could be put to practical use. For example, images of eyes could ensure ticket sales on public transport and improve surveillance systems to deter anti-social behavior. What is the best title for the passage? A) You're being watched! B) Pay for your drink, please! C) Mind your behavior in public! D) Look out for electronic surveillance equipment!
A: A
Q: NEW YORK (AP) -- In a report, the Pew Internet and American Life Project said 47 percent of U.S. adult Internet users have looked for information about themselves through Google or another search engine. That is more than twice the 22 percent of users who did in 2002, but Pew senior research specialist Mary Madden was surprised that the growth wasn't higher than it had been expected. "Yes it's doubled, but it's still the case that there's a big chunk of Internet users who have never done this simple act of connecting their names with search engines," she said. "Certainly more and more people have become aware of this, but I don't know it's necessarily kept pace with the amount of content we post about ourselves or what others post about us." About 60 percent of Internet users said they aren't worried about the extent of information about themselves online, although they are increasingly concerned over how that data can be used. Americans under 50 and those with more education and income were more likely to self-Google---in some cases because their jobs demand a certain online persona . Meanwhile, Pew found that 53 percent of adult Internet users admit to looking up information about someone else, famous people not included. Often, it's to find someone they've lost touch with. But looking up information about friends, relatives, colleagues and neighbors also was common. Although men and women equally searched for online information about themselves, women were slightly more likely to look up information about someone they are dating. In many cases, the search is not harmful, done to find someone's contact information. But a third of those who have conducted searches on others have looked for public records, such as bankruptcies and divorce proceedings. A similar number have searched for someone else's photo. Pew also found that teens were more likely than adults to limit the range of people who can see their information at an online hangout like Facebook or News Corp.'s MySpace, contrary to conventional... According to the report some people haven't looked for information about themselves because _ . A) they are not rich enough to get a computer B) they are not well educated C) they don't know they can look for their own information on the Internet D) they think it unnecessary to look for their own information on the Internet
A: C