Read the following article and select the best answer. Article: Although he will always be remembered for starring "Superman," the greatest role of actor Christopher Reeve's life was as a champion of sufferers of spinal cord injuries and an supporter of stem cell research. Unlike the man of steel, he wasn't faster than a speeding bullet, more powerful than an engine and he couldn't leap tall buildings in a single bound. But the courage and determination Reeve showeed in trying to overcome his paralysis from a 1995 horse-riding accident went beyond any of the achievements of the comic book hero. "He became a real-life Superman. His heroism, his courage was extraordinary," Colin Blakemore, the chief executive of Britain's Medical Research Council said. "Like many people who suffer some terrible injuries, Christopher Reeve was totally changed by that experience and brought the kind of energy and enthusiasm that made him successful as a film star to an entirely different issue, with huge effect." Reeve, 52, died of heart failure on October 10, 2004 after having treatment for an infected pressure wound without realizing his dream of walking again. But in the nine years since his accident, he made personal progress to regain respect and admiration, founded the Christopher Reeve Paralysis Foundation, a non-profit research organization, and used his fame to raise millions of dollars for research into spinal cord injuries. He also provided hope and inspiration to other patients and made speeches to support scientists to be allowed to conduct stem cell research in the hopes of eventually curing paralysis and other illnesses such as diabetes and Alzheimer's and Parkinson's disease. "He has been our champion. If you think of spinal injuries, you automatically recall a picture of Christopher Reeve," said Paul Smith, executive director of the Spinal Injuries Association in England. It is because of Reeve that spinal cord injuries and stem cell research are so widely discussed, according to Smith. The fact that it happened to Reeve showed it can affect anyone, even Superman. Reeve... Question: Reeve made the following contributions to the scientific research except _ . - setting up a non-profit research organization - winning public respect and admiration by overcoming obstacles - influencing the world by making speeches on stem cell research - struggling for the permission to conduct stem cell research
winning public respect and admiration by overcoming obstacles

Read the following article and select the best answer. Article: Life on earth depends on water, and there is no substitute for it. The current assumption is that our basic needs for water--whether for drinking, agriculture, industry or the raising of fish--will always have to be met. Given this premise , there are two basic routes we can go; more equal access to water or better engineering solutions. Look at the engineering solutions first. A lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal changes of the river--the pulse of the water. And the fact is that if you build a dam, you generally spoil the downstream ecology. In the past, such problems have been hidden by a lack of information. But in the near future, governments will have no excuses for their ignorance. The engineers' ability to control water flows has created new kinds of unpredictability, too. Dams in Africa have meant fewer fish, less grazing and less floodplain agriculture, none of which were expected. And there average economic life is assumed to be thirty years. Dams don't exist forever, but what will replace them is not clear. The challenge for the future is to find new means of controlling water. Although GM technology will allow us to breed better dry-land crops, there is no market for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World? Question: What's the main idea of this passage? - The engineering solutions to water resource and their limitation. - The challenge for the future. - The basic means of controlling water. - The challenge for developing crops.
The engineering solutions to water resource and their limitation.

Q: Read the following article and select the best answer. Article: Americans use many expressions with the word dog.People in the United States love their dogs and treat them well.They take their dogs for walks,let them play outside and give them good food and medical care.However, dogs without owners to care for them lead a different kind of 1ife.The expression,to lead a dog's life,describes a person who has an unhappy existence. Some people say we live in a dog-eat-dog world.That means many people are competing for the same things,like good jobs.To be successful,a person has to work like a dog.Such hard work can make people dog-tired,or sick as a dog. Still,people say every dog has its day.This means that every person enjoys a successful period during his or her life.To be successful, people often have to learn new skills.Yet.some people say that you can never teach all old dog new tricks.They believe that older people do not like to learn new things and wilt not change the way they do things. Husbands and wives use this doghouse term when they are angry at each other.For example,a woman might get angry at her husband for coming home late or forgetting their wedding anniversary.She might tell him that he is in the doghouse.She may not treat him nicely until he apologizes.However,the husband may decide that it is best to 1eave things alone and not create more problems.He might decide to let sleeping dogs lie. Dog expressions are also used to describe the weather.The dog days of summer are the hottest days of the year.A rainstorm may cool the weather.But we do not want it to rain too hard.We do not want it to rain cats and dogs. Question: The correct statement about the dog in the expression"to 1ead a dog's life"is _ . - a lucky dog - a homeless dog - a clever dog - a tamed dog
A: a homeless dog

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Read the following article and select the best answer. Article: According to a recent survey, Canadian parents realize their role as protectors and providers to raise their children both emotionally and physically. That's not very different from the way our parents saw themselves. But with more two-career families and busy schedules, one thing parents today recognize more than ever is the need to set aside special time for their children. These 'nurturing moments' are changed into memories that they will treasure all their lives. Nurturing moments might be the time between our work and life,bringing your child to work with you to see what you do during the day,visiting your child's make-believe world,discussing his other school day and exploring the natural world outside your door. These times are not merely a luxury , they're a necessity. It's during these moments that parents pass values and attitudes to their children. Over time, children pick up good habits and positive self-image. Here are a few tips for making the most of your family time together: Regularly sit down as a family to share a meal. Allow each person to describe something interesting about his or her day. Make one night a week family night. Family members take turns choosing a special activity for the evening everyone partakes in the fun. Show your children you care about their interests by having them teach you about their activity or hobby. Nurturing healthy children involves body, mind and spirit. The little things you do to your care are the building blocks for confidence, self-esteem and a healthy outlook. By giving your children these tools, you prepare them for life. Question: Which of the following is closest in meaning to 'nurturing moment'? - The time between work and everyday activities. - The time when you are busy with your work. - The time when you play with children. - The time when you show your care for your child.
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The time when you show your care for your child.