Read the following article and select the best answer. Article: 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. Question: Why does a diver get a kind of illness? - Because he tries to do exercise underwater. - Because he can't breathe enough air. - Because he comes to the surface too quickly - Because the air in his blood can be used up
Because he comes to the surface too quickly

Read the following article and select the best answer. Article: Heavy rains have caused disasters across China this summer, bringing the worst landslides in decades. The most deadly disaster happened on August 8 when a big landslide hit Zhouqu County in Gansu province, killing at least 1,407 people. On August 18, landslides hit Gongshan, a town in northwestern Yunnan. At least 38 people were killed and 54 are missing. Heavy rains also caused landslides in several counties in Sichuan province. People were forced to evacuate to safe places. Landslides and devastation Landslides take place when dirt and rocks slide down a slope together. Sometimes these landslides are small, and hardly noticeable. Other times however, they can be massive, involving the entire side of a mountain. Landslides can be caused by a number of different things. Often rain, which adds weight to the side of a slope, can cause one. Other times they might be caused by erosion .When a stream slowly removes the base of a slope, it weakens the entire side of the mountain. As a slide moves down a mountain slope, it can pick up great speed and energy. Some slides travel at a speed of 300km an hour. The resulting winds can be so powerful that they are known to strip the leaves off surrounding trees. Earthquakes and landslides Some experts think the landslides in Sichuan were related to the magnitude-8.0 Wenchuan earthquake on May 12, 2008. The quake has caused a change in the structure of the Earth's surface, making it more likely that land will slide in the rain, according to geologist Xu Qiang of the Chengdu University of Technology. Landslides pose threats to 140 cities and towns in the country, one quarter of which are in Sichuan, said Wei Fangqiang, a researcher with the Chinese Academy of Sciences. Landslide prevention If you want to avoid being a landslide victim, the easiest thing to do is avoid living on slopes or close to mountains. If you live in a landslide-threatened area, try not to water the slopes if possible. If there are large rocks on the slopes above your house, remove them so that they... Question: The landslides around China are mentioned at the beginning of the article to _ . - warn travelers to keep away from those places - show that the environment in China is getting worse - introduce the topic of landslides - express concern for those affected by landslides
introduce the topic of landslides

Q: Read the following article and select the best answer. Article: 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. Question: Which of the following English proverbs can be best used at the beginning of the passage? - Once a thief, always a thief - Lies have short legs - Honest is the best policy - An honest look covers many faults
A: Honest is the best policy

Q: Read the following article and select the best answer. Article: "Bad luck always comes in three" and last Saturday seemed to prove it. After trouble with the car, the television, we spent the evening waiting for the next trouble. Shortly after dinner we both smelled smoke. My wife, who was often careless when cooking, ran to the kitchen but returned looking puzzled. I rushed up the stairs to see smoke coming from under our bedroom door. I went to the bathroom and tied a wet cloth over my face. Then I returned to the bedroom, opened the door andcrawled in--there would be less smoke at floor level. With one hand reaching out in front of me I advanced carefully feeling for the switch to turn off the electric blanket. At that moment I heard the bell of a coming fire engine. Thank goodness my wife had not been wasting her time. Question: The wife rushed into the kitchen because _ . - the smoke came out of the kitchen - she left something in the kitchen - she was afraid the smoke was caused by her carelessness - things in the kitchen were easy to cause fire
A: she was afraid the smoke was caused by her carelessness