Besides providing an ideal environment for sea plants and animals to live in, seawater has other values, one of which is that it constantly moves, and its movements produce energy. The most obvious movements are waves and the tides. Winds causes the waves, and the gravitational pull of the moon and the son causes tides. In places like the Bay of Fundy in Canada, the difference between the high and low tide level can be as much as 40 feet. France and Britain are now trying to use energy in the tides to produce electricity. Waves can produce electricity and some experiments are taking place to learn more about this. One of the most encouraging areas of research uses the difference between the temperature of seawater at the surface and deep down to produce electricity. According to the passage, which of the following is not true? A) The temperature difference of seawater can produce electricity. B) The energy in the tides can produce electricity. C) Waves can produce electricity. D) The plants and animals in the ocean can produce electricity.
B
(Question)
A study of a million UK women, published today in The Lancet, has shown that happiness itself has no direct effect on mortality, and that the widespread but mistaken belief that unhappiness and stress directly cause ill health came from studies that had simply confused cause and effect. Life-threatening poor health can cause unhappiness, and for this reason unhappiness is associated with increased mortality. In addition, smokers tend to be unhappier than non-smokers. However, after taking account of previous ill health, smoking, and other lifestyle and socio-economic factors, the investigators found that unhappiness itself was no longer associated with increased mortality. The lead author, Dr Bette Liu, now at the University of New South Wales, Australia said: "Illness makes you unhappy, but unhappiness itself doesn't make you ill. We found no direct effect of unhappiness or stress on mortality, even in a ten-year study of a million women." As in other studies, unhappiness was associated with deprivation, smoking, lack of exercise, and not living with a partner. The strongest associations, however, were that the women who were already in poor health tended to say that they were unhappy, stressed, not in control, and not relaxed. The main analyses included 700 000 women, average age 59 years, and over the next 10 years these women were followed by electronic record linkage for mortality, during which time 30 000 of the women died. After allowing for any differences already present in health and lifestyle, the overall death rate among those who were unhappy was the same as the death rate among those who were generally happy. The study is so large that it rules out unhappiness being a direct cause of any material increase in overall mortality in women. This was true for overall mortality, for cancer mortality, and for heart disease mortality, and it was true for stress as well as for unhappiness. It's wrongly believed that _ . A) unhappiness itself is not associated with increased mortality B) there is no direct link between unhappiness and mortality C) ill health directly causes unhappiness and stress D) ill health directly results from unhappiness and stress
(Answer)
D
Ques: Queen Victoria was monarch of Great Britain from 1837 until her death in 1901. This period is often called the Victorian Age. Queen Victoria was a stern and serious woman. One reason she was so serious was that she had suffered a great loss. When she was twenty years old, she married a German prince named Albert. Victoria and Albert were deeply in love, and their marriage was extremely happy. In 1861, after they had been married for twenty-one years, Albert died, leaving Queen Victoria heartbroken. For the rest of her life, the lonely Victoria mourned his loss. It was customary in those days for a widow to dress in black for a short time after the death of her husband. But Queen Victoria dressed in black for forty years. And for forty years, as another sigh of her grief, she wrote her letters white paper edged in black. Even before Prince Albert died, Queen Victoria was known as a very serious woman. She had a strong sense of duty and worked very hard at all her tasks. In her diary she wrote, "I love to be employed; I hate to be idle." She never forgot that she was Britain's queen and always acted with great dignity. Victoria had high ideals and moral standards that sometimes made her seem stuffy. She was also very sure of herself. She always thought that she was right, and she expected everyone to agree with her. Which of the following statements about Queen Victoria is NOT true? A) She had great confidence in herself. B) She ruled Great Britain for sixty-four years. C) She enjoyed her marriage to a German prince. D) She became a serious woman after her beloved husband died.
Ans: D
Ques:People without homes have always been present in America. In the past,they were called hobos,bums,or drifters. It was not until the early 1980s that these people received a new name,when activists named them the homeless. The types of people who were homeless also changed in the 1980s. No longer were they primarily older men. They were younger,with an average age of 35. Their numbers consisted of women,children,adolescents and entire families. They were of many races and cultures. No longer were they only in the inner city. They lived in rural areas and in large and small cities. No longer were they invisible to the people with homes and jobs. The homeless of the 1980s lived in packing crates and doorways. They slept on sidewalks and in public parks. They begged money from passersby. Counting the numbers of homeless people is difficult. However,in 1984 the Department of Housing and Urban Development estimated the homeless population at between 250,000 and 350,000. In 1990 the Census Bureau counted about 459,000 people in shelters,in cheap hotels,and on the streets. In 1995 the National Alliance to End Homelessness estimated that there were 750,000 homeless Americans. The homeless of the 1980s also began to speak out for themselves. Some spoke to Congress and to government committees controlling funding for social programs. Street newspapers,such as Chicago's Streetwise and Boston's Spare Change,had stories,poems,and essays that expressed the homeless viewpoint. The visible and vocal presence of the homeless prompted help from volunteers and government agencies. But what is still needed is a solution to the _ of America's homeless population. Who is responsible to get the number of the homeless population according to the passage? A) Government agencies. B) Street newspapers. C) The homeless themselves. D) The volunteers.

Ans:
A