Read the following article and select the best answer. Article: Why do men live a shorter life than women? The latest research indicates that men's hearts going into a rapid decline when they reach middle age could be the cause. The research of ageing on the heart has shown that women's _ may be linked to the fact that their hearts do not lose much pumping power with age. "We have found that the power of the male heart falls by 20-25 percent between 20 and 70 years of age," said the head of the study, Samantha of Liverpool John Moores University in the UK. "Within the heart there are millions of cells which make it beat.Between the ages of 20 and 70, one-third of those cells die and are not replaced in men ," said Samantha."This is part of the ageing process." What amazes scientists is that the female heart suffers very little loss of these cells.A healthy 70-year-old woman's heart could work almost as perfectly as a 20-year-old one's. "This gender difference might give the reason why men live shorter than women,"said Samantha.They studied over 250 healthy men and women between the ages of 17 and 80, who are mainly healthy persons so as to reduce the influence of disease."The team has yet to think about why ageing suffers a greater loss on the male heart," said Samantha. But there is also good news -- men can enjoy the health of their hearts with regular exercise.Samantha stressed that women should also take regular exercise to stop their leg muscles getting weaker as they age. Question: If you want to live a long life, you should _ . - enable your heart to beat much faster - think about the reason for ageing - take regular exercise to keep your heart healthy - stop your cells from being lost
take regular exercise to keep your heart healthy

Read the following article and select the best answer. Article: One would have to be a fool to overlook the importance of using positive thinking for you rather than allowing negative thinking to work against you. In recent years, research in psychopharmacology has proved what many people have known over the centuries: a positive attitude is good for you, good for your health, good for your wealth, good for everything. Researchers found that a positive attitude produces a specific chemical reaction which makes people feel better, while negative thinking results in a decline of hormone and shuts down the immune system. This leads to illness and depression. Positive thoughts will make you feel better. Even if you must begin by literally forcing yourself to be positive (faking it, so to speak), it will become contagious and the positive thoughts will generate nice little chemicals and good feelings which will reinforce the positive thoughts. For example, if you force yourself to smile or laugh, even when you don't feel like smiling or laughing, if you keep at it for a few minutes, you will soon feel like it. Feelings can generate thoughts, but thoughts can also generate feelings. Control your thoughts and you can control your feelings. Positive thinking is important in all aspects of our lives. There is probably no single factor more important in determining your success in achieving your career objectives than your own attitude. It's often been said that in the land of the blind, the one-eyed man is king. And in the office of militant negativism, the positive workers shine like gold. You cannot control external events, but you can learn to control your reaction to those events and thereby have a positive attitude and be happy. This vital key to success is totally within your control. Use it. Question: We can infer from the passage that _ . - positive thinking can cure you of your diseases - positive thinking can easily be generated by anyone - a decline of hormone may cause you to be depressed - a specific chemical reaction is the cause of negative thinking
a decline of hormone may cause you to be depressed

Q: Read the following article and select the best answer. Article: I have a rule for travel: Never carry a map. I prefer to ask for directions. Foreign visitors are often puzzled in Japan because most streets there don't have names. In Japan, people use _ in their directions instead of street names. For example, the Japanese will say to travelers, "Go straight down to the corner. Turn left at the big hotel and go past a fruit market. The post office is across from the bus stop." In the countryside of the American Midwest, usually there are not many landmarks. There are no mountains, so the land is very flat . In many places there are no towns or buildings within miles. Instead of landmarks, people will tell you directions and distance. In Kansas or Iowa, for example, people will say, "Go north two miles. Turn east, and then go another mile." People in Los Angeles, California, have no idea of distance on the map: They measure distance by means of time, not miles. "How far away is the post office?" you ask. "Oh," they answer, "It's about five minutes from here." You say, "Yes, but how many miles away is it?" They don't know. People in Greece sometimes do not even try to give directions because visitors seldom understand the Greek language. Instead of giving you the direction, a Greek will often say, "Follow me." Then he'll lead you through the streets of the city to the post office. Sometimes a person doesn't know the answer to your question. What happens in this situation? A New Yorker might say, "Sorry, I have no idea." But in Yucatan, Mexico, no one answers, "I don't know." People in Yucatan think that "I don't know" is impolite. They usually give an answer, often a wrong one. A visitor can get very, very lost in Yucatan! One thing will help you everywhere -- in Japan, in the United States, in Greece, in Mexico, or in any other place. You might not understand a person's words, but maybe you can understand his body language. He or she will usually turn and then point in the correct direction. Go in that direction, and you may find the post office! Question: The passage mainly tells us that _ . - never carry a map for travel - there are not many landmarks in the American Midwest - there are different ways to give directions in different parts of the world - New Yorkers often say, "I have no idea," but people in Yucatan, Mexico, never say this.
A: there are different ways to give directions in different parts of the world

Q: Read the following article and select the best answer. Article: Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer, saying studies showed a clear link. "Our suggestion is for people to increase their intake, through diet or a vitamin supplement," Dr. Cedric Garland said in a telephone interview. Garland's research team reviewed 63 studies, including several large long-term ones, on the relationship between vitamin D and certain types of cancer worldwide between 1966 and 2004. "There's nothing that has this ability to prevent cancer," he said, urging governments and public health officials to do more to fortify foods with vitamin D.Garland is part of a University of California at San Diego Moores Cancer Center team that published its findings this week online in the American Journal of Public Health. Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses, usually at around 100 international units (IU) a serving. People might want to consider a vitamin supplement to raise their intake to 1000 IUs per day, Garland said, adding that it was well within the safety guidelines established by the National Academy of Sciences. The authors said that taking more vitamin D could be especially important for people living in northern areas, which receive less vitamin D from sunshine. African Americans, who don't produce as much of the vitamin because of their skin colour, could also benefit significantly from a higher intake, the authors said. Question: People from which area should take more Vitamin D according to the passage? - Asian people - American people - European people - African people
A: African people