题目内容
In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming: in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels. Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influences on the weather have exceeded those caused by man. The question is: Which natural cause has the most effect on the weather？
One possibility is the variable behavior. of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates, every 27.5 days, it presents hotter or colder faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation. The sun is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
Scientists are now finding mutual relations between models or solar-weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth's climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful counter-balance to the sun's diminishing heat.
The article was written to explain______.
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According to the author, people of underdeveloped cultures can have______ languages.
听力原文：W：Thank you so much for applying for the position of the Accountant-general and for coming to this interview today．
M：I'm so happy to have the opportunity to talk with you and I will do my best for the company if I am lucky enough to get hired．
Q：What are the two speakers doing？
(16)
听力原文： (32)Francis Scott Key Fitzgerald, a member of the "Lost Generation", was the most famous chronicler of 1920s America, an era that he called "the Jazz. Age." He finished (33)four novels and wrote dozens of short stories that treat themes of youth and promise along with despair and age.
(34) Fitzgerald was born on September 24, 1896., He did poorly in school and was sent to a boarding school. He then managed to enroll at Princeton in 1913. He never graduated, instead (34)enlisting in the army in 1917,as World War I neared its end.
Fitzgerald became a second lieutenant, and was stationed at Camp Sheridan, Alabama. There he met and fell in love with seventeen-year-old Zelda Sayre. Zelda finally agreed to marry him, but her strong desire for wealth led her to delay their wedding until he could prove a success. (35)With the publication of This Side of Paradise in 1920, Fitzgerald became a literary sensation, earning enough money and fame to convince Zelda to marry him.
Many of these events from Fitzgerald's early life appear in his most famous novel, The Great Gatsby, published in 1925. Having become a celebrity, Fitzgerald fell into a wild, reckless life-style. of parties, while desperately trying to please Zelda by writing to earn money.
As the Roaring Twenties dissolved the Great Depression, however, Zelda suffered a nervous breakdown and Fitzgerald battled alcoholism, which influenced his writing. He published Tender Is the Night in 1934, and sold short stories to support his lavish lifestyle. In 1937, he left for Hollywood to write screenplays, and in 1940, while working on his novel The Love of the Last Tycoon, died of a heart attack at the age of forty-four.
(33)
A．Cave building technique.B．Language and art.C．Ice Age dancing.D．Heating system.
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