题目

海葵附着在蟹壳上生活，借助蟹得以快速转移并得到氧气和食物，而蟹借附着在身上的海葵掩护自己。它们之间这种互惠互利的关系属于（    ） A．寄生 B．捕食 C．共生 D．竞争 答案：CMost of us spend our lives seeking the natural world. We go fishing, sit in the garden, have a picnic, live in the suburbs or go to the seaside. The most popular leisure activity in Britain is going for a walk. When joggers jog, they don’t run the streets. Every one of them tend to go to the park or the river.But despite this, our children are growing up nature deprived(剥夺). I spent my boyhood climbing trees. These days, children are robbed of these ancient freedoms, due to problems like crime, traffic, the loss of the open spaces and strange new ideas about what is best for children, that is to say, things that can be bought, rather than things that can be found.The truth is to be found elsewhere. A study in the US: families had moved to better housing and the children were assessed for ADHD—attention deficit hyperactivity disorder (多动症). Those whose accommodation had more natural views showed an improvement of 19%; those who had the same improvement in material surroundings but no nice view improved just 4%.ADHD is one of the great problems of modern childhood. One study after another indicates that contact with nature gives huge benefits to ADHD children. However, we spend money on drugs rather than on green places.The life of old people is measurably better when they have access to nature. The increasing concern for the growing population of old people is in quality rather than quantity of years. And study after study finds that a garden is the single most important thing in finding that quality. Even problems with crime and aggressive behaviour are reduced when there is contact with the natural world.We need the wild world. It is essential to our well-being, our health and our happiness.1.According to the author, people enjoy _______ to seek nature.A. jogging on the streetB. sitting in the gardenC. shopping in the supermarketD. running in the gym2. From the second paragraph, we can see that _______.A. adults deprive the children of their rights to approach natureB. climbing trees will certainly do good to the childrenC. children probably spend less time in nature nowadaysD. children tend to be happier as a result of their material satisfaction3. In what way do people benefit from their contact with nature?A. Children with ADHD can be cured.B. A garden nearby improves the quality of old people’s life.C. Problems with crime and violent behavior will easily be solved.D. Children’s performance at school is greatly improved.4.What is the main idea of this passage?A. Access to nature improves our life.B. Nature treats children with ADHD.C. Getting close to nature reduces crime.D. Man can’t live without natural areas.