How much can environment affect intelligence? In one study, striking increases in IQ occurred in 25 children who were moved from an orphanage(孤儿院) to more stimulating（使人兴奋的，使人振奋的） environments．The children, who were all considered mentally retarded and unadoptable, were moved to an institution where they received personal attention from adults．Later, these supposedly retarded children were adopted by parents who gave them love, a family ,and a stimulating home environment．The children gained an average of 29 IQ points．For one child, the increase was an amazing 58 points．A second group of initially less "retarded" children, who stayed in the orphanage, lost an average of 26 IQ points.
Other encouraging results can be found in early childhood education programs, which provide stimulating intellectual experiences for disadvantaged children．In one study, children from low-income families were given enriched environments from early infancy(婴儿期) through preschool．By age 2 their IQ scores were already higher than those in a control group．More important, they were still 5 points higher seven years later．High-quality enrichment programs such as Head Start can prevent children from falling behind in school.
A particularly striking environmental effect is the fact that 14 nations have shown average IQ gains of from 5 to 25 points during the last 30 years．These IQ boosts, averaging 15 points, occurred in far too short a time for genetics to explain them．It is more likely that the gains reflect environmental forces, such as improved education, nutrition, and living in a technologically complex society.
【小题1】What's the main idea of this passage

Is your family interested in buying a dog? A dog can be a pleasant companion to your family, but if you choose the wrong kind of dog , you will have a lot of troubles.

Families should sit down and discuss the possible problems before buying a dog. Even if the children in your family are the ones who want the dog, the parents are the ones who are really responsible for seeing that the animal is properly cared for. If you don’t know much about dogs, it is a good idea to go to the library for books about different kinds of dogs, and books about how to train a young dog. In reading about the different breeds(种类)you should know that a dog described(描述)as very alert(机敏灵活的)may be too active. When a book describes a dog as an excellent hunting dog, it probably means that the dog won’t be happy living in a small house. Dog breeds vary(变化)in popularity as the years go by. One of the most popular dogs these days is the German shepherd. This is because it provides protection as well as companionship. The family should be warned that these dogs grow up to be very big, and may be too powerful for children to control. If space is limited, a toy dog may be a good choice. These dogs are very small and easy to train. They don’t need to be walked daily, since they can exercise in the home.

1.According to the passage, one can get information about different kinds of dogs      .

2.The German shepherd is a popular dog      .

3.Which of the following statements is not true?

4.Which is the best topic of the passage?

Coolest Hotels in the World
Artau Aragon Towers
The Ariau Amazon Towers hotel lets you sleep in a tree house. Eight towers make up this
hotel that offers over 300 rooms. If you really want to get into the spirit, book the Tarzan Suite which is large enough for a big family. You'll be thirty feet up in the air and can travel between the towers through their wooden walkways.
Prices: starting at $300 one night for each person for a regular room and going all the way
up to $3000 for the Tarzan Suite.
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The Ice Hotel
Every winter in Jukkasjarvi, Sweden, a special kind of hotel called the lee Hotel is built. Each year, world-famous artists are invited to design and produce works of art from the ice, many of which can be found in the rooms. You'll have your choice between hot or cold rooms but you will be well advised to stay at least one night in a cold room for a true experience.
Prices: starting at $318 one night for each person for either a cold room or a warm one. For more information, visit the website: http:Hwww.icehotel.com
Propeller Island
Propeller Island City Lodge is a very special hotel that was designed by a German artist Each room provides you with the possibility of living in a work of art. Every single piece of furniture in the thirty rooms of the hotel has been hand-made and each room is completely different. You'll be able to choose a room based on your own personal tastes.
Prices: starting at just $91 a night, and an additional (另外) person for only 20 extra dollars. For more information, visit the website: http://www.propeller-island.com
For information about other cool hotels In the world, visit the website: http://www.bahamabeachclub.com
【小题1】What it special about the Ariau Amazon Towers hotel?

“To be or not to be.” Outside the Bible, these six words are the most famous in all the literature of the world. They were spoken by Hamlet when he was thinking aloud, and they are the most famous words in Shakespeare because Hamlet was speaking not only for himself but also for every thinking man and woman. To be or not to be, to live or not to live, to live richly and abundantly, or to live dully and meanly. A philosopher once wanted to know whether he was alive or not, which is a good question for everyone to put to himself occasionally. He answered it by saying: “I think, therefore I am.”
　　But the best definition of existence I ever saw was one written by another philosopher who said: “To be is to be in relations.” If this is true, then the more relations a living thing has, the more it is alive. To live abundantly means simply to increase the range and intensity(强烈) of our relations. Unfortunately we are so constituted that we get to love our routine. But other than our regular occupation, how much are we alive? If you are interested only in your regular occupation, you are alive only to that extent. So far as other things are concerned --- poetry and prose(散文), music, pictures, sports, unselfish friendships, politics, international affairs ---you are dead.
On the contrary, it is true that every time you acquire a new interest --- even more, a new accomplishment(成就) --- you increase your power of life. No one who is deeply interested in different kinds of subjects can remain unhappy. The real pessimist is the person who has lost interest.
　　Bacon said that a man dies as often as he loses a friend. But we gain new life by contacts with new friends, and new ideas and thoughts, too. Where your thoughts are, there will be your life too. If your thoughts are limited only to your business, only to your physical welfare, only to your narrow circle of the town in which you live, then you live a narrow restricted(有限的, 受约束的) life. But if you are interested in what is going on in China, then you are living in China. If you’re interested in the characters of a good novel, then you are living with those highly interesting people. If you listen intently to fine music, you are away from your immediate surroundings and living in a world of passion and imagination.
To be or not to be --- to live intensely and richly, or merely to exist, which depends on ourselves. Let us widen and intensify our relations. While we live, let us live!
【小题1】What does the author mainly want to do by this passage?

As you move around your home, take a good look at the things you have. It is likely that your living room will have a television set and a video, and your kitchen a washing machine and a microwave oven. Your bedroom drawers will be filled with almost three times as many clothes as you need. You almost certainly own a car and possibly a home computer, holiday abroad at least once a year and eat out at least once a week.
Now, perhaps, more than ever before, people are wondering what life is all about, and what it is for. Seeking material success is beginning to trouble large numbers of people around the world. They feel that the long hours work culture to make more money is eating up their lives, leaving them very little time or energy for family or pastimes. Many are turning to other ways of living and downshifting is one of them. Six percent of workers in Britain took the decision to downshift last year.
One couple who downshifted is Daniel and Liz. They used to work in central London. He was a newspaper reporter and she used to work for an international bank. They would go to work by train every day from their large house in the suburbs, leaving their two children with a nanny. Most evenings Daniel wouldn’t get home until eight or nine o’clock and nearly twice a month he would have to fly to New York for meetings. They both earned a large amount of money but began to feel that life was passing them by.
Nowadays, they run a farm in the mountains of Wales. “I always wanted to have a farm then,” says Daniel, “and we took almost a year to make the decision to downshift. It’s taken some time getting used to, but it’s been worth it. We have to think twice now about spending money on car repairs and we no longer have any holidays. However, I think it’s made us stronger as a family, and the children are much happier.
Liz, however, is not quite sure. “I used to enjoy my job, even though it was hard work and long hours. I’m not really a country girl, but I suppose I’m gradually getting used to looking after the animals. One thing I do like, however, is being able to see more of my children. My advice for other people wanting to do the same is not to think about it too much, or you might not do it at all.”
【小题1】The passage tells us that       .