When people think of the unique characteristics of Beijing the hutong style always comes to mind.It is no exaggeration to say within hutong lives the city's history. The word hutong was borrowed from the Mongolian word to mean "water well" about 700 years ago.Later it referred to a place where people live.Hutong we see today are made up of small lanes formed by walls of siheyuan.They were built during the Yuan, Ming and Qing dynasties. When the People's Republic of China was founded in 1949, there were more than 3,000 hutong.Most of the city's population lived in this traditional housing.But with the modernization of the city in the 1980s and early 1990s, many hutong were pulled down to build roads, skyscrapers and modern houses. The government has recognized the importance of hutong to Chinese cultural heritage .In 2002, Beijing listed 40 protected historical zones and increased its efforts to restore some key relics and older streets in the city.Nearly 500 hutong have survived. Hutong that still exist are like oases of calm surrounded by the noisy city.Walking through them, it's common to see groups of elderly citizens sitting together playing cards, mahjong or Chinese chess.In the early mornings and evenings, they gather to practice traditional forms of exercise such as taijiquan as well as dancing and singing folk songs or Peking Opera.Hutong have become a museum of Beijing's folk customs and history. What is the original meaning of the word hutong? A) Small lanes. B) Water well. C) Siheyuan. D) A traditional house.
B
We all know that it is possible for ordinary people to make their homes on the equator ( ), although often they may feel uncomfortably hot there. Millions do it. But as for the North Pole ---- we know that it is not only a dangerously cold place, but that people like you and we would find it quite impossible to live there. At the present time only the scientists and explorers can do so, and they use special equipment. Men had been traveling across and around the equator on wheels, on their feet or in ships for thousands of years; but only a few men, with great difficulty and in very recent time, have ever crossed the ice to the North Pole. So it may surprise you to learn that, when traveling by air, it is really safer to fly over the North Pole than over the equator. Of course, this is not true about landings in the polar region (which passenger aeroplanes do not make). But the weather, if we are flying at a height of 5,000 meters above the Pole , is a delight. At 4,000 meters and more above the earth you can always be sure that you will not see a cloud in the sky as far as the eye can reach. In the tropics , on the other hand, you are not certain to keep clear of ( ) bad weather even at such heights as 18,000 or 20,000 meters . Aeroplanes can't climb as high or as quickly in cold air as in warm. Nor can clouds. In practice, this is an advantage to the aeroplane, which is already at a good height when it reaches the polar region and so it does not need to climb, while at the same time cold air keeps the clouds down low. Aeroplanes usually do not need to climb quickly or fly high in the polar region because _ . A) they can cross the ice with special equipment B) there are no clouds above 5000 meters C) it is very cold D) they do not land there
B
Q: A new study suggests that early exposure to germs strengthens the immune system. That means letting children get a little dirty might be good for their health later in life. The study involved laboratory mice. It found that adult mice raised in a germ-free environment were more likely to develop allergies, asthma and other autoimmune disorders. There are more than eighty disorders where cells that normally defend the body instead attack tissues and organs. Richard Blumberg,who led the study,is a professor at Harvard Medical School in Boston,Massachusetts. He says,in 1989,medical researchers who sought to explain these diseases, first discovered that the increasing use of antibacterial soaps and other products, especially early in life, could weaken immune systems. Now, Dr. Blumberg and his team have what is the first biological evidence to link early exposure to germs to stronger adult immune systems. They say this exposure could prevent the development of some autoimmune diseases. In the adult germ-free mice, they found that inflammation in the lungs and colon was caused by so-called killer T cells. These normally fight infection. But they became overactive and targeted healthy tissue--an autoimmune condition seen in asthma and a disease called ulcerative colitis . Dr. Blumberg says the mice raised in a normal environment did not have the same reaction. He says their immune systems had been "educated" by early exposure to germs. Rates of autoimmune disorders are rising worldwide, but mostly in wealthier, industrialized countries. According to Dr. Blumberg, it might be high time that people were warned to be more careful with the early use of antibiotics and the prescription from their doctors. Rob Dunn is a professor of ecology and evolutionary biology at North Carolina State University in Raleigh. He says the new study does not mean people should stop washing. "Wash your hands , but don't do it with antibacterial soap. Let your kids play in a reasonable amount of dirt and get outside and get... Who first found immune systems might get harmed by overly using antibacterial products? A) A professor of ecology and evolutionary biology. B) A professor at Harvard Medical School in Boston. C) Medical researchers who tried to explain autoimmune disorders. D) Medical researchers who tried to treat autoimmune disorders.
A: C
Many people who work in London prefer to live outside it, and to go in to their offices or schools every day by train, car or bus, even though this means they have to get up early in the morning and reach home late in the evening. One advantage of living outside London is that houses are cheaper. Even a small flat in London without a garden costs quite a lot to rent. With the same money, one can get a little house in the country with a garden of one's own. Then, in the country one can rest from the noise and hurry of the town. Even though one has to get up earlier and spend more time in trains or buses, one can sleep better at night and during weekends and on summer evenings, one can enjoy the fresh, clean air of the country. If one likes gardens, one can spend one's free time digging, planting, watering and doing other jobs which are needed in a garden. Then, when the flowers and vegetables come up, one has the reward of one who has shared the secret of Nature. Some people, however, take no interest in country things: for them, happiness lies in the town, with its cinemas and theatres, beautiful shops and busy streets, dance-halls and restaurants. Such people would feel that their life was not worth living if they had to live it outside London. An occasional walk in one of the parks and a fortnight's (two weeks) visit to the sea every summer is all the country they want: the rest they are quite prepared to leave to those who are glad to get away from London every night. Which of the following statements is NOT true? A) People who like country things prefer to live outside the city. B) People who work in London prefer to live in the country. C) Because of certain disadvantages of living outside London, some people who work in London prefer to live inside London. D) Because of certain advantages of living outside London, many people who work in London prefer to live outside London.
B