Read the following article and answer the question. Article: "The world's oceans are slowly getting more acidic." say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.  The lowering of the waters' PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century.  These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. "This level of acidity will get much more extreme in the future if we continue releasing CO2into the atmosphere," said Dr Caldeira. "And we predict the amount of future acidity will exceed   anything we have seen over the last several hundred million years."  However, it is not  ly clear what that means for ocean life. Most organisms live near the surface, where the greatest PH change would be expected to occur, but deep-ocean life forms may be more sensitive to PH changes.Coral reefs and other organisms whose shells contain calcium carbonate   may be affected if the water's acidity levels keep going up, the team predict.  In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming.But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thingbecause in releasing CO2into the atmosphere we warm the planet, and when CO2, is absorbed by the ocean, it reduces the amount of greenhouse warming." Question: If the water's acidity level keeps rising,  _  . Answer:
ocean life whose structures contain calcium carbonate may be affected
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Read the following article and answer the question. Article: Late that afternoon I took the train back to Sydney. There I found another surprise waiting for me. My room at the hotel had been given to somebody else and they had no room for me. Harkin had known my travel plans and had planned everything. How could he have booked the room only for three days? There was nothing to be done but to find another hotel. The waiters were happy to find me a new hotel, and when I said that I was happy to stay at the airport, thinking it might be cheaper than staying in the city, they suggested the Holiday Inn at the airport. There was one small matter: the room rate was 300$ per night. The best hotel in Katoomba had wanted only 145$. I asked if there was anything cheaper they might suggest but they warned that most hotels would already be full by this time. The hotel was far from the train station, so I had to take a taxi, as 25$. On the way to the Holiday Inn, we passed a hotel just two blocks from the Holiday Inn that advertised a room rate of 104$. At the desk I asked if their room rate could go down a lot. "No, this is a 4star hotel," the waiter told me. "In that case," I replied, "I'll just walk the two blocks to the cheap hotel." But she warned me that they were probably full and that if I didn't take the room, it might not be available when I came back. Finally, I decided to take the room. The room itself was big, but the air conditioning couldn't keep up with the Australian heat. I couldn't get to sleep until about 1:00 am. Question: How did the writer feel when hearing the room rate at the Holiday Inn? Answer:
Surprised.
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Read the following article and answer the question. Article: In China ,with the development of society, more and more people are annoyed at the continually rising house prices. They want to know who is to blame for it. Local governments,developers and speculators   share a vested   interest in it. People who are really in need of homes are most likely to suffer heavy losses. Many local governments depend on selling land to keep its normal operation. The higher land prices,the more money. Therefore,developers back the local governments by buying land at high prices. In return,the governments make favorable policies to help the developers. For example,drive all the possible home buyers to this nasty   market. They even encourage large numbers of speculators to catch more people. Rising house prices have already become the fence which divides the Chinese society. It has caused widespread dissatisfaction. The government will lose the support of the common people if leaving house prices out of control. Besides,rising house prices will stop us building the new countryside as the present policy actually forbid people to flow freely from cities to the countryside. Collecting taxes on houses can fundamentally solve this problem. On one hand,it will discourage the speculators. On the other hand,it will offer a stable tax resource apart from reducing the sales cost of the developers. secondly,stop the developers selling the houses before completion. If so,the developers will certainly try their best to sell all their houses once completed. And this will also lower speculators' expectation of price rising,which will decrease speculations. Question: We can infer from the passage that continually rising house prices will  _  . Answer:
affect the sound development of the Chinese society
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Read the following article and answer the question. Article: Holidaymakers who are bored with baking beaches and overheated hotel rooms head for a big igloo. Swedish businessman Nile Bergqvist is delighted with his new hotel, the world's first igloo hotel. Built in a small town in Lapland, it has been attracting lots of visitors, but soon the fun will be over. In two weeks' time Bergqvist's ice creation  will be nothing more than a pool of water. "We don't see it as a big problem," he says. "We just look forward to replacing it." Bergqvist built his first igloo in 1991 for an art exhibition. It was so successful that he designed the present one, which measures roughly 200 square meters. Six workmen spent more than eight weeks piling 1,000 tons of snow onto a wooden base; when the snow froze, the base was removed. "The only wooden thing we have left in the igloo is the front door," he says. After their stay, all visitors receive a survival certificate recording their success. With no windows, nowhere to hang clothes and temperatures below 0degC, it may seem more like a survival test than a relaxing  hotel break. "It's great fun," Bergqvist explains, "As well as a good start in survival training." The popularity of the igloo is beyond doubt: it is now attracting tourists from all over the world. At least 800 people have stayed at the igloo this season even though there are only 10 rooms. "You can get a lot of people in," explains Bergqvist. "The beds are three meters wide by two meters long, and can fit at least four at one time." Question: When the writer says "the fun will be over," he refers to the fact that   _  . Answer:
