Looking for a new weight loss plan? Try living on top of a mountain. Mountain air contains less oxygen than air at lower altitudes, so breathing it causes the heart to beat faster and the body to burn more energy. A handful of studies have found that athletes training at high altitudes tend to lose weight. Doctor Florian Lippl of the University Hospital Of Ludwig-Maximilians-university Munich wondered how the mountain air would affect overweight individuals if they weren’t doing any more physical activity than usual.
Lippl and his colleagues invited 20 overweight men to an environmental research station about 300 meters below the summit of Zugspitze, a mountain around 2,970 meters near the Austrian border. They were allowed to eat as much as they liked. The men also gave blood so that researchers could test for hormones linked to appetite and fatness. At the end of the week, the men, whose mean weight starting out was 105kg, had lost on average about l.5kg. The men’s blood pressure also dropped, which the researchers believed was due to weight lost.
Exactly what caused the weight loss is uncertain. Loss of appetite is common at higher altitudes, and indeed the men ate significantly less than usual—about 700 calories fewer per day. Lippl also notes that because their consumption was being recorded, they may have been more self-conscious about what they ate. Regardless, eating less accounts for just l kg of the l.5 kg lost, says Lippl. He thinks the increased metabolic (新陈代谢的) rate, which was measured, also contributed to weight loss but cannot separate the different effects with the given data.
Appetite loss at high altitudes could certainly be key, notes Damian Bailey, a physiologist at the University of Glamorgan, UK, who recently lost 11 kg during a 3-month expedition to the Andes in Chile.   
Unfortunately, for the average person there is no treatment that can resemble living at high altitude, says Lippl. The only alternative is hypobaric chamber, which exposes subjects to low oxygen and isn’t practical as a treatment. He says, half- jokingly, “If fat people plan their holidays, they might not go to the sea, but maybe to the mountain.”
【小题1】What contributes the most to one’s heart rates according to the first paragraph?

LG Electronics, the world’s fourth largest cell phone producer, has added another feature to the mobile phone-reading books for the visually impaired(弱视). The company started marketing the model, the LF1300 on Sep.18.No other people but the blind and visually-impaired with a certificate(证书) can buy the talking phone at sales shops of LG Electronics.

“The LF1300 is the world’s first mobile phone that is capable of reading books for the print-disabled, who otherwise could not enjoy them．This is not about making money but about continuing to put froth efforts to reduce the digital difference for the disabled,” LG Vice President said.

Its users can download about 300 audio books from the Internet site of LG Sangam Library to their phones for free in two ways. One is to access the digital library’s Website on a computer designed for the blind to get the audio books and transfer them to cell phones. The other is to download the digital books directly with cell phones through the wireless net work by touching a hot key on the LF1300 phone.

On top of its unique feature of reading books, the LF1300 is no worse than the pupular top-line phones in both outlooks and frnctionalities(功能性). The phone is armed with an MP3 player and a Bluetooth headset, enabling users to listen to the music or talk without a cord. The user interface（界面) of the LF1300 is also designed for the blind,enabling phone users to control it through a voice guidance system.

However, because the phone’s internal mimory of 17MB is small even for a single audio book file, which takes up 80MB on average, a high-volume external memory is a must for the talking book services.

1.          are allowed to buy the talking phone.

A．Disabled people with a certificate

B．All the blind and poor-sighted people

C．The blind and poor-sighted with a certificate

D．Both healthy and disabled citizens

2.The users can enjoy reading books on LF1300 by         .

A．talking to the microphone                 B．touching any key

C．touching its screen                      D．touching the hot key

3.What can be learned from the passage?

A．This is the first time LG company has done something for the disabled.

B．Phone users don’t have to pay much to download the digital books.

C．LF1300 has a less attractive outlook than any other top-line phone.

D．The disadvantage of LF1300 is that it has too small internal memory.

4.The best title of the passage might be         .

A．A New Type of Cell Phone is on the Market

B．Mobile Phones Can Read Books for the Print-Disabled

C．The Disabled will Benefit from Cell Phone Producers

D．Advanced Technology Helps the Blind Read Books

THE 2,298-kiIometer Beijing-Guangzhou High-speed Railway 1.____ (official) opened to passengers on December 26，2012. It is the world’s longest high-speed rail route. The 2.____ (design)speed of the track is 350 km^, though speeds during the initial period of operation will be limited to about 300 km/h. The new route cuts the travel time between Beijing and Guangzhou3.almost two thirds, from 22 hours to roughly eight hours .On December 1, 2012，not long before the opening of the Beijing-Guangzhou High-speed Railway, the Harbin-Dalian High-speed Railway, 4.____ first high-speed line ever to cross land that lies frozen for almost half a year, began operations, 5.____ allows passengers to appreciate the view off the coast from Dalian in the morning, 6.____ the winter snowscape of frosty Harbin in the afternoon .At present the total 7.__ (long) of high-speed lines in China 8.___(reach)9,349 km. With four main lines 9.___ (run) east-west and four north-south, the country’s high-speed train network is the world’s largest. China plans to expand 10._ high-speed railway network to 50，000 km by 2020, to cover almost all large and medium-sized cities.

A

A higher reading rate, with no loss of comprehension, will help you in other subjects as well as in English, and the general principles apply to any language. Naturally, you will not read every book at the same speed. You would expect to read a newspaper, for example, much more rapidly than a physics or economics textbook-but you can raise your average reading speed over the whole range of materials you wish to cover so that the percentage gained will be the same whatever kind of reading you are concerned with.

The reading passages which follow are all of an average level of difficulty for your stage of instruction. They are all about five hundred words long. They are about topics of general interest which do not require a great deal of specialized knowledge. Thus they fall between the kind of reading you might find in your textbooks and the much less demanding kind you will find in a newspaper or light novel. If you read this kind of English, with understanding at four hundred words per minute, you might skim (浏览) through a newspaper at perhaps 650-700, while with a difficult textbook you might drop to two hundred or two hundred and fifty.

Perhaps you would like to know what reading speeds are common among native English-speaking university students and how those speeds can be improved. Tests in Minnesota, USA, for example, have shown that students without special training can read English of average difficulty, for example, Tolstoy's War and Peace in translation, at speeds of between 240 and 250 words per minute with about seventy percent comprehension. Students in Minnesota claim that after twelve half-hour lessons, once a week, the reading speed can be increased, with no loss of comprehension, to around five hundred words per minute.

According to the passage, the purpose of effective reading with higher speed is most likely to help you ________.

A. only in your reading of a physics textbook

B. improve your understanding of an economics textbook

C. not only in your language study but also in other subjects

D. choose the suitable materials to read

Which of the following does not describe the types of reading materials mentioned in the second paragraph?

A. Those beyond one's reading comprehension.

B. Those concerned with common knowledge.

C. Those without much demand for specialized knowledge.

D. Those with the length of about five hundred words.

The average speed of untrained native speakers in the University of Minnesota is ________.

A. about 300 words per minute

B. about 245 words per minute

C. about 650-700 words per minute

D. about 500 words per minute

According to the passage, how fast can you expect to read after you have attended twelve half-hour lessons in the University of Minnesota?

A. You can increase your reading speed by three times.

B. No real increase in reading speed can be achieved.

C. Yon can increase your reading speed by four times.

D. You can double your reading speed.

In many countries today, laws protect wildlife. In India, the need for such protection was realized centuries ago.
About 300 B.C. an Indian writer described forest that were somewhat like national parks today. The killing of game beasts was carefully supervised(监视). Some animals were fully protected．Within the forest, nobody was allowed to cut timber(wood for building), burn wood for charcoal(炭), or catch animals for their furs. Animals that became dangerous to human visitors were caught or killed outside the park so that other animals would not become uneasy.
The need for wildlife protection is greater now than ever before. About a thousand species of animals are in danger of extinction, and the rate of extinction was about one species every fifty years from A.D. 1 to 1800, but now it is about one species every year. Everywhere, men are trying to solve the problem of protecting wildlife caring for the rapid growth of the world’s population.
【小题1】 In forest of ancient India __________.