Dogs are social animals and without proper training, they will behave like wild animals. They will soil your house, destroy your belongings, bark excessively, fight other dogs and even bite you. Nearly all behavior problems are perfectly normal dog activities that occur at the wrong time or place or are directed at the wrong thing. The key to preventing or treating behavior problems is learning to teach the dog to redirect its normal behavior to outlets that are acceptable in the domestic setting.

　　One of the best things you can do for your dog and yourself is to train its obedience. Obedience training doesn’t solve all behavior problems, but it is the foundation for solving just about any problem. Training opens up a line of communication between you and your dog. Effective communication is necessary to instruct your dog about what you want it to do.

Training is also an easy way to establish the social rank order. When your dog obeys a simple request of “come here, sit,” it is showing obedience and respect for you. It is not necessary to establish yourself as top dog or leader of the pack（群）by using extreme measure. You can teach your dog its subordinate（从属的）role by teaching it to show submission to you. Most dogs love performing tricks for you to

pleasantly accept that you are in charge.

　　Training should be fun and rewarding for you and your dog. It can enrich your relationship and make living together more enjoyable. A well-trained dog is more confident and can more safely be allowed a greater amount of freedom than an untrained animal.

51. Behavior problems of dogs are believed to _______.

A. be just part of their nature

　 B. worsen in modern society

　 C. occur when they go wild

　 D. present a threat to the community

52. The primary purpose of obedience training is to _______.

　 A. teach the dog to perform clever tricks

　 B. make the dog aware of its owner’s authority

　 C. provide the dog with outlets for its wild behavior

　 D. enable the dog to regain its normal behavior

53. Effective communication between a dog and its owner is _______.

　 A. essential to solving the dog’s behavior problems

　 B. the foundation for dogs to perform tasks

　 C. a good way to teach the dog new tricks

　 D. an extreme measure in obedience training

54. Why do pet dogs love performing tricks for their masters?

　 A. To avoid being punished.

　 B. To show their affection for their masters.

　 C. To win leadership of the dog pack.

　 D. To show their willingness to obey.

55. When a dog has received effective obedience training, its owner _______.

　 A. can give the dog more rewards

　 B. will enjoy a better family life

　 C. can give the dog more freedom

　 D. will have more confidence in himself

Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use．This is especially true in agriculture, where sustainable development is often taken as the sole measure of progress without a proper appreciation of historical and cultural perspectives．
To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so ．Medieval agriculture in northern Europe fed, clothed and sheltered a predominantly rural society with a much lower population density than it is today．It had minimal effect on biodiversity, and any pollution it brought about was typically localized．In terms of energy use and the nutrients captured in the product it was relatively inefficient．
Contrast this with farming since the start of the industrial revolution．Competition from overseas led farmers to specialize and increase yields．Throughout this period food became cheaper, safe and more reliable．However, these changes have also led to habitat loss and to diminishing biodiversity．
What’s more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050，yet the growth of cities and industry is reducing the amount of water available for agriculture in many regions．
All this means that agriculture in the 21st century will have to be very different from how it was in the 20th．This will require radical（激进的）thinking．For example, we need to move away from the idea that traditional practices are inevitably more sustainable than new ones．We also need to abandon the notion that agriculture can be “zero impact”．The key will be to abandon the rather simple and static measures of sustainability, which centre on the need to maintain production without increasing damage．Instead we need a more dynamic interpretation, one that looks at the pros and cons of all the various way land is used．There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity．It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting, but we do not know whether lower carbon footprints will always be better for biodiversity．
What is crucial is recognizing that sustainable agriculture is not just about sustainable food production．
72．How do people often measure progress in agriculture?
A．By its productivity                 B． By its impact on the environment　　
C．By its sustainability                D．By its contribution to economic growth
73．What does the author think of traditional farming practices?
　　A．They have remained the same over the centuries
　　B．They have not kept pace with population growth
　　C．They are not necessarily sustainable
　　D．They are environmentally friendly
74．What will agriculture be like in the 21st century?
　　A．It will go through radical changes
　　B．It will supply more animal products
　　C．It will abandon traditional farming practices
　　D．It will cause zero damage to the environment
75．What is the author’s purpose in writing this passage?
　　A．To remind people of the need of sustainable development
　　B．To suggest ways of ensuring sustainable food production
　　C．To advance new criteria for measuring farming progress
　　D．To urge people to rethink what sustainable agriculture is．

How to Be a Winner

Sir Steven Redgrave  

Winner of 5 Olympic Gold Medals  

“In 1997 I was found to have developed diabetes （糖尿病） . Believing my career （职业生涯）was over, I felt extremely low. Then one of the specialists said there was no reason why I should stop training and competing. That was it----the encouragement I needed. I could still be a winner if I believed in myself. I am not saying that it isn’t difficult sometimes. But I wanted to prove to myself that I wasn’t finished yet. Nothing is to stand in my way.”  

Karen Pickering  

Swimming World Champion  

“I swim 4 hours a day, 6 days a week. I manage that sort of workload by putting it on top of my diary. This is the key to success―you can’t follow a career in any field without being well-organized. List what you believe you can achieve. “Trust yourself, write down your goals for the day, however small they are, and you’ll be a step closer to achieving them.”  

Kirsten Best  

Poet ＆ Writer  

“When things are getting hard, a voice inside my head tells me that I can’t achieve something. Then, there are other distractions, such as family or hobbies. The key is to concentrate. When I feel tense, it helps a lot to repeat words such as ‘calm’, ‘peace’ or ‘focus’, either out loud or silently in my mind. It makes me feel more in control and increases my confidence. This is a habit that can become second nature quite easily and is a powerful psychological （心理的） tool.”  

 　　60. What does Sir Steven Redgrave mainly talk about?

　　A. Difficulties influenced his career.

　　B. Specialists offered him medical advice.

　　C. Training helped him defeat his disease.

　　D. He overcame the shadow of illness to win.

　　61. What does Karen Pickering put on top of her diary?

　　A. Her training schedule.

　　B. Her daily happenings.

　　C. Her achievements.

　　D. Her sports career.

　　62.What does the underlined word “distractions” probably refer to？

　　A. Ways that help one to focus.

　　B. Words that help one to feel less tense.

　　C. Activities that turn one's attention away.

　　D. Habits that make it hard for one to relax.

　　63. According to the passage ,what do the three people have in common?

　　A. Courage.

　　B. Devotion.

　　C. Hard work.

　　D. Self-confidence.

Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the measure of progress without a proper appreciation of historical and cultural perspectives.

　　To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a mainly rural society with a much lower population density than it is today. It had minimal effect on biodiversity, and any pollution it caused was typically localized. In terms of energy use and the nutrients captured in the product it was relatively inefficient.

　　Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialize and increase yields. Throughout this period food became cheaper, safer and more reliable. However, these changes have also led to habitat loss and to reducing biodiversity.

　　All this means that agriculture in the 21st century will have to be very different from how it was in the 20th. This will require thorough thinking. For example, we need to move away from the idea that traditional practices are certainly more sustainable than new ones. We also need to abandon the notion that agriculture can be “zero impact”. The key will be to abandon the rather simple and static(稳定的)measures of sustainability, which centre on the need to maintain production without increasing damage. Instead we need a more dynamic interpretation, one that looks at the pros and cons of all the various way land is used. There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity.

　　What is important is recognizing that sustainable agriculture is not just about sustainable food production.

1.How do people often measure progress in agriculture?

A. By its impact on the environment             B. By its contribution to economic growth

C. By its productivity                          D. By its sustainability

2.Specialization and the effort to increase yields have resulted in               .

A. Localized pollution                          B. The shrinking of farmland

C. the decrease of biodiversity                 D. competition from overseas3. What does the author think of traditional farming practices?

　　A. They are not necessarily sustainable　　         B. They have not kept pace with population growth

　　C. They have remained the same over the centuries   D. They are environmentally friendly

4.What will agriculture be like in the 21st century?

　　A. It will abandon traditional farming practices　　    B. It will mainly keep traditional farming

　　C. It will go through complete changes 　　     D. It will cause zero damage to the environment

5.What is the author’s purpose in writing this passage?

　　A. To remind people of the need of sustainable development.

　　B. To urge people to rethink what sustainable agriculture is.

　　C. To advance new criteria for measuring farming progress.

　　D. To suggest ways of ensuring sustainable food production.

How to Be a Winner

Sir Steven Redgrave  

Winner of 5 Olympic Gold Medals  

“In 1997 I was found to have developed diabetes （糖尿病） . Believing my career （职业生涯）was over, I felt extremely low. Then one of the specialists said there was no reason why I should stop training and competing. That was it----the encouragement I needed. I could still be a winner if I believed in myself. I am not saying that it isn’t difficult sometimes. But I wanted to prove to myself that I wasn’t finished yet. Nothing is to stand in my way.”  

Karen Pickering  

Swimming World Champion  

“I swim 4 hours a day, 6 days a week. I manage that sort of workload by putting it on top of my diary. This is the key to success―you can’t follow a career in any field without being well-organized. List what you believe you can achieve. “Trust yourself, write down your goals for the day, however small they are, and you’ll be a step closer to achieving them.”  

Kirsten Best  

Poet ＆ Writer  

“When things are getting hard, a voice inside my head tells me that I can’t achieve something. Then, there are other distractions, such as family or hobbies. The key is to concentrate. When I feel tense, it helps a lot to repeat words such as ‘calm’, ‘peace’ or ‘focus’, either out loud or silently in my mind. It makes me feel more in control and increases my confidence. This is a habit that can become second nature quite easily and is a powerful psychological （心理的） tool.”  

 　　60. What does Sir Steven Redgrave mainly talk about?

　　A. Difficulties influenced his career.

　　B. Specialists offered him medical advice.

　　C. Training helped him defeat his disease.

　　D. He overcame the shadow of illness to win.

　　61. What does Karen Pickering put on top of her diary?

　　A. Her training schedule.

　　B. Her daily happenings.

　　C. Her achievements.

　　D. Her sports career.

　　62.What does the underlined word “distractions” probably refer to？

　　A. Ways that help one to focus.

　　B. Words that help one to feel less tense.

　　C. Activities that turn one's attention away.

　　D. Habits that make it hard for one to relax.

　　63. According to the passage ,what do the three people have in common?

　　A. Courage.

　　B. Devotion.

　　C. Hard work.

　　D. Self-confidence.