Ques: When he was driving home one evening on a country road, he saw an old lady, strained on the side of the road. He stopped in front of her car and got out. Even with the smile on his face, she was worried. He looked poor and hungry. He knew how she felt. He said, "I am here to help you, madam. Why don't you wait in the car where it's warm? By the way, my name is Joe." She had a flat tire . Joe crawled under the car, changed the tire. But he got dirty and his hands hurt. She could not thank him enough and asked him how much she owed him. He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she could give that person the assistance they needed, and Joe added," And think of me." She drove off. A few miles down the road the lady saw a small restaurant. She went in. The waitress had a sweet smile, and was nearly eight months pregnant. The old lady wondered how someone like her who seemed poor could be so kind to a stranger. Then she remembered Joe. After the lady finished her meal, the waitress went to get her change from a hundred-dollar bill. But she stepped right out the door. When the waitress came back, she noticed something written on a napkin, "I am helping you because someone once helped me. If you really want to pay me back, here's what you do ---Do not let the chain of love end with you." That night when she got home, she was thinking about the money and what the lady had written. She and her husband needed money with the baby due next month. She knew how worried her husband was, and as he lay sleeping next to her, she whispered, "Everything's going to be all right. I love you, Joe" Why did the lady leave the restaurant without getting her change? A) She forgot it B) She wanted to help Joe. C) she wanted to tip the waitress. D) She wanted to give the waitress some help.
Ans: D

Ques: Room doctors and medical groups around the world last weekend reacted with strong opposition to the news that an Italian specialist is  _ cloning the first human baby.          Dr. Severino Antinori, who is head of a hospital in Rome, has been referred to in an Arab newspaper claiming that one of his parents is eight weeks pregnant  with a cloned baby.          Antinori refused to comment on the reports, but in March 2001 he said he hoped to produce a cloned embryo  for implantation with two years. So far seven different kinds of animals have already successfully been cloned, including sheep, cats and most recently rabbits.          Doctors showed their doubt and were strongly opposed although they admitted that human cloning would finally come true unless there was a worldwide ban on the practice.          Professor Rudolf Jaenisch of the Whitehead Institute for Biomedical Research at the Massachusetts Institute of Technology said, "I find it astonishing that people do this where the result can be foretold that it will not be a normal baby. It is using humans as guinea pigs . It makes people feel sick."          But Ronald Green, director of the Ethics Institute at Darmouth College in the USA, said it is unlikely that an eight-week-old pregnancy would lead to a birth.          So far all cloned animals have suffered from some different serious disorders, many of them dying soon after their birth.          Doctors are opposed to  human cloning because they are worried about the welfare of the cloned child if there is one. "There are no benefits of cloned human beings, just harm," said Dr. Michael Wilks of the U.K. Which of the following is true according to the passage? A) Doctor Severino Antinori is strongly opposed to human cloning B) Up to now, seven kinds of animals have been cloned, including sheep, cats, human and rabbits C) Professor Rudolf Jaenisch is carrying on an experiment in cloning an eight-week-old embryo. D) Ronald Green doubts about the future successful birth of the so-called cloned embryo.
Ans: D

Ques: Could smells affect your lifespan? Female fruit flies rid of the ability to smell food outlive their peers.The sense of smell may be linked to the cellular ageing process in many other organisms--even people.A link has recently been found between sensory experiences and lifespan in both worms and flies.For example, Scott Pletcher, a biologist at the University of Michigan, found that eliminating   fruit flies' ability to smell enabled them to live nearly 20 percent longer than flies with an intact sense of smell. Pletcher's team reasoned that food smells were the ones most likely to affect ageing, as nutrition and longevity are known to be linked in many organisms.To test the idea that food odors affect lifespan, Pletcher's team eliminated flies' ability to smell carbon dioxide, which is produced by some fly foods.They left the rest of the smelling system intact. This intervention had no effect on male flies, but the females lived 30 percent longer than normal.Pletcher thinks eliminating the ability to smell CO2may deprive flies of information about food availability.This could signal to cells that food is scarce, causing processes that promote survival.Indeed, his team found that the CO2-insensitive female flies stored extra fat and that both males and females immune to CO2were more resistant to stress than normal flies.Pletcher isn't sure why the change in his fruit flies only affected the lifespan of the females, but he suggests that females may simply be more sensitive to the odor of CO2. A smell or taste that stretches lifespan in humans could be a potential preventative for age-related disease, he adds.Although in fruit flies it appears to be the smell of CO2that affects ageing, he says that an analogue in humans might be a smell or taste linked to human food--or a lack of it.Matt Kaeberlein studies ageing at the University of Washington in Seattle. He cautions that we don't know whether ageing and smell are linked in mammals.But " we definitely undergo physiological changes in response to smelling... According to the results of Pletcher's study, we can see that   _  . A) male flies in general can live longer than female flies B) flies without ability to smell is inspired to find food in another way C) both male and female flies can live longer without the ability to smell D) flies without ability to smell can also get information about food availability
Ans:
B