题目内容
PALO ALTO, California--" Switching off the television may help prevent children from getting fatter--even if they do not change their diet or increase the amount they exercise," US researchers said last week.
A study of 192 third and fourth graders, generally aged eight and nine, found that children who cut the number of hours spent watching television gained nearly two pounds(0.91kg)less over a one-year period than those who did not change their television diet.
"The findings are important because they show that weight loss can only be the result of a reduction in television viewing and not any other activity," said Thomas Robinson, a pediatrician(儿科专家) at Stanford University.
"American children spend an average of more than four hours per day watching television and videos or playing video games, and rates of childhood being very fat have doubled over the past 20 years." Robinson said.
In the study, presented this week to the Pediatric Academic Societies annual meeting in San Francisco, the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to one-third.
Children watching fewer hours of television showed a significantly smaller increase in waist size and had less body fat than other students who continued their normal television viewing, even though neither group ate a special diet nor took part in any extra exercise.
"One explanation for the weight loss could be the children unstuck to the television may simply have been moving around more and burning off calories," Robinson said.
"Another reason might be due to eating fewer meals in front of the television. Some studies have suggested that eating in front of the TV encourages people to eat more," Robinson said.
The author tries to tell us in the first two paragraphs that ________.
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Although it may be the most convenient place for Londoners to buy books, Chafing Cross Road is not the cheapest. For the really cheap second-hand volumes, the collector must travel off the beat- en track, to Farringdon Road, for example, in the East Central district of London. Here there is nothing so grandiose (宏大的)as bookshops. Instead, the book sellers come along each morning and tip out their sacks of books on to small barrows (活动推车)which line the roadside. In places like this one can still, occasionally, pick up for few pence an old volume that may be worth many pounds.
The text tells us Londoners like ________.
【B13】
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
He has been called the "missing link", half-man, half-beast. He is supposed to live in the highest mountain in the world—Mount Everest.
He is known as the Abominable Snowman. The 【B1】 of the Snowman has been around for 【B2】 .Climbers in the 1920s reported finding marks like those of human feet high up on the side of Mount Everest. The native people said they 【B3】 this creature and called it the "Yeti", and they said that they had 【B4】 caught Yetis on two occasions 【B5】 none has ever been produced as evidence (证据).
Over the years, the story of the Yetis has 【B6】 In 1951, Eric Shipton took photographs of a set of tracks in the snow of Everest. Shipton believed that they were not 【B7】 the tracks of a monkey or a bear and 【B8】 that the Abominable Snowman might really 【B9】 .
Further efforts have been made to find out about Yetis. But the only things people have ever found were 【B10】 footprints. Most believe the footprints are nothing more than 【B11】 animal tracks, which had been made 【B12】 as they melted(融化)and refroze in the snow 【B13】 , in 1964, a Russian scientist said that the Abominable Snowman was 【B14】 and was a remaining link with the prehistoric humans. But, 【B15】 , no evidence had ever 【B16】 been produced. These days, only a few people continue to take the story of the Abominable Snowman 【B17】 .
But if they ever 【B18】 catching one, they may face a real 【B19】 Would they put it in a 【B20】 or give it a room in a hotel？
【B1】
No nation leaped into the 20th century like Japan. For two hundred years, Japan remained and isolated from the rest of the world. It doubted of western ways. In 1854, Commodore Perry of the U. S. Navy sailed into Tokyo Bay. When he showed the people inventions like the telegraph and railroad train, Japan realized what it was missing. Japan has quickly caught up with western technology. It may have even gone past it.
Japan has a population of over 116,000,000. The people are thickly settled on the four main islands. Since only one sixth of the land is arable, Japan relies on imported food. To pay for the imports, Japan exports manufactured goods.
Japan builds and sells cars, motorcycles, television sets, radios and cameras. Textiles and chemicals also made. In Yokohama Harbor, ships are constructed for use by other nations.
The "head start" western nations had may be the reason for Japan's success today. Western countries are still using machines and technology that they developed many years ago. Japan is using newer, improved methods. For example, robots are relieving factory-workers of long, tiring jobs.
Modem technology has brought modern problems. Air and water quality reached dangerous levels in some parts of Japan in the late 1960's. Since then, the Japanese government has applied strong pollution controls.
The main idea of the passage is that Japan ________.
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