For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside.
Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. When builders began making houses and offices, they did not want to waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also used man－made building materials which are now known to let out harmful gases.
As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building green plants.
Scientists believe that a plant's leaves absorb the pollutants (污染物). In exchange the plant lets out oxygen through its leaves. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants.Indoor air pollution may be more dangerous than the air outside mainly because .
| A．the building are too high |
| B．the flow of air indoor is limited |
| C．the building materials are harmful |
| D．people don't want to waste energy |
Some kind of indoor pollution can be found in .
| A．all kinds of offices | B．all kinds of houses |
| C．every modern house | D．every old house |
In the last paragraph the word“ absorb” may mean .
| A．take in | B．bring up | C．give out | D．turn into |
Scientists believe that plants can .
| A．change oxygen into pollutants |
| B．absorb all the pollutants |
| C．make your houses more prettier |
| D．absorb pollutions and let out oxygen |
According to the last paragraph, we should to clean the air.
| A．plant all kinds of plant |
| B．plant more trees. |
| C．have the same kind of plant |
| D．have different kinds of plants |
Hello! My name is Lisa, and I am a lioness. I live on the open grasslands of Africa with my family. Lions living in a group are called a pride.
My father is strong and powerful. He and his cousin are the leaders of our pride. The other members are my mother, her sisters, and their children.
The area where a pride lives is big! We roar (咆哮) to tell each other where we are and to warn strangers to stay away.
Meet my new baby brother. His name is Leon. See the spots on his fur? We lions are born spotted or striped (有条纹的). As we grow older, the spots gradually disappear.
Lionesses usually spend their entire lives with their birth pride, but Leon will leave when he is about three years old. He’ll run around with a male (雄性的) friend or relative for a few years until they take over a pride of their own.
But for now, we have lots of fun together. We often play and fight for hours, which can help us practice skills that we will need for hunting.
We lions keep ourselves very clean. Just like a house cat, I clean my fur (毛) with my tongue. We clean for each other, too, to show we’re friends.
Lions like to sleep for most of the day. We hunt in the cool evening. Female (雌性的) lions hunt more often than male lions. We work together as a team. At the right moment, we attack and kill our prey. Then we share it. Male lions usually eat first. Females eat next. Baby lions are the last to eat. The smallest one gets the least food.
Since we are full, it’s time to go to find a nice place for a sleep. Bye!According to the passage, Leon _____.
| A．hunts more often than his sisters |
| B．will have spots on his fur for the whole of his life |
| C．will leave his birth pride when he is about three |
| D．will take over his birth pride when his father dies |
The underlined word “prey” in the passage probably means _____.
| A．the animal that is hunted |
| B．the animal that is dangerous |
| C．the animal that is powerful |
| D．the animal that is ill |
Which of the following is NOT true?
| A．Lions sometimes clean their fur for each other. |
| B．Lions also develop their skills of hunting by having fun. |
| C．Lions in Africa usually hunt for food in the evening. |
| D．Baby lions are often the first to get food in their group. |
The passage is written for _____.
| A．doctors | B．tourists | C．children | D．hunters |
Until recently, the "science of the future" was supposed to be electronics and artificial intelligence. Today it seems more and more likely that the next great breakthroughs in technology will be brought through a combination of those two sciences with organic chemistry and genetic engineering. This combination is the science of biotechnology.
Organic chemistry enables us to produce marvelous synthetic materials. However, it is still difficult to manufacture anything that has the capacity of wool to conserve (保存) heat and also to absorb moisture. Nothing that we have been able to produce so far comes anywhere near the combination of strength, lightness and flexibility that we find in the bodies of ordinary insects.
Nevertheless, scientists in the laboratory have already succeeded in "growing" a material that has many of the characteristics of human skin. The next step may well be "biotech hearts and eyes" which can replace diseased organs in human beings. These will not be rejected by the body, as is the case with organs from humans.
The application of biotechnology to energy production seems even more promising. In 1996 the famous science fiction writer, Arthur C. Clarke, many of whose previous predictions have come true, said that we may soon be able to develop remarkably cheap and renewable sources of energy. Some of these power sources will be biological. Clarke and others have warned us repeatedly that sooner or later we will have to give up our dependence on non-renewable power sources. Coal, oil and gas are indeed convenient. However, using them also means creating dangerously high levels of pollution. It will be impossible to meet the growing demand for energy without increasing that pollution to catastrophic (灾难性的) levels unless we develop power sources that are both cheaper and cleaner.
It is attempting to think that biotechnology or some other "science of the future" can solve our problems. Before we surrender to that temptation we should remember nuclear power. Only a few generations ago it seemed to promise limitless, cheap and safe energy. Today those promises lie buried in a concrete grave in a place called Chernobyl, in the Ukraine. Biotechnology is unlikely, however, to break its promises in quite the same or such a dangerous way.According to the passage, the science of the future is likely to be ________.
| A．electronics | B．biotechnology |
| C．genetic engineering | D．nuclear technology |
The materials produced with organic chemistry are ________.at present.
| A．as good as wool |
| B．as good as an insect's body |
| C．better than natural materials |
| D．not as good as natural materials |
According to the passage, it may soon be possible ________.
| A．to transplant human organs |
| B．to make artificial hearts and eyes |
| C．to produce drugs without side effects |
| D．to make something as good as human skin |
In 1996, Arthur C. Clarke predicted that_______.
A. the Chernobyl disaster would happen in two years
B. we will never stop using non-renewable power sources biological
C. oil, gas and coal could be repeatedly used in the future
D. power sources would be put into use soonWhat do we learn from the last paragraph?
| A．Biological power will keep all its promises. |
| B．Biological power is cheaper than nuclear power. |
| C．Biotechnology can solve all our future energy problems |
| D．Biological power may not be as dangerous as nuclear power |
A huge shire horse in Australia has been declared the biggest horse in the world by its owner , beating the current Guinness World Record（吉尼斯记录） by several inches .
The huge five-year-old , from Pakenham , S. E Australia , measures an amazing 20.1 hands , or 2.057m tall . He weighs over 1.3 tons ( 1,300kg) — about the same as a small car — and is still growing . His owner , horse trainer Jane Greenman , 47 , says the only time the horse runs is when there is food on offer . “ He eats an unbelievable amount . I would hate to run a team of eight horses his size—it would send you broke . ” she says .
The massive horse , whose name is Noddy , was born in Australia with its parents imported from England . Noddy’s grandfather , Ladbrooke Edward (UK) was the world’s tallest horse during the 1980’s .But Jane had no idea that the horse she raised from the age of six months would grow this big . Noddy immediately began to rocket and soon overtook both his parents in size .
Although she says that she is not interested in the Guiness Book of World Records , nevertheless Jane has carried out her own research and is sure that Noddy comes top . “ The nearest is a horse in Texas , at 20 hands ,” says Jane . “ Noddy is already an inch taller than that . The frightening thing is he still hasn’t finished—shire horses aren’t fully grown until they’re about six or seven .”
Jane has said that Noddy could be sold overseas , possibly even fetching a record price to match his height . She is unwilling to sell , but to fund the high cost of keeping him she needs to put him to work . “ He needs a job . It’s very hard to find jobs for such a big horse in Australia . I wish he could stay here but I’ve tried everywhere , ” she says regretfully . “ I just want people to enjoy this beautiful animal as much as I do .” How old is the horse now ?
| A．Six months old . | B． Five years old . |
| C．Two years old . | D．Six years old . |
The underlined word “ rocket ” in Paragraph 3 probably means “ ”.
| A．run fast | B．eat a lot | C．grow fast | D．get strong |
Which of the following is a big problem for the horse’s owner ?
| A．She doesn’t know how to apply for the Guinness World Record . |
| B．She has to feed eight big horses at the same time . |
| C．Another horse in Texas is growing even faster than hers . |
| D．There is not enough money to cover（支付） the cost of raising the horse . |
It can be inferred from the passage that .
| A．Noddy won’t grow any taller |
| B．Noddy’s growth can be genetically（基因） explained |
| C．many people are willing to buy Noddy |
| D．no job will be available for Noddy at all |
What would be the best title for this passage ?
| A．Jane Greenman becomes famous for her horse |
| B．New world record for the biggest horse |
| C．Large size means no job for a big horse |
| D．Jane Greenman , an excellent horse trainer |
People in cities all over the world shop in supermarkets. Who decides what you buy in the supermarket? Do you decide? Does the supermarket decide?
When you enter the supermarket, you see shelves full of food. You walk in the aisles (走道) between the shelves. You push a shopping cart and put your food in it.
You probably hear soft, slow music as you walk along the aisles. This may be an attempt to please you, so you will enjoy shopping. Some supermarkets want to increase their profits by playing soft and slow music, because the slow music makes you walk slowly and you have more time to buy things.
Fresh fruit and vegetables are usually put near the entrance. When you arrive at the supermarket, you think about the kinds of fruit and vegetables you need first. Once you’ve got that out of the way, you can relax and do the rest of the shopping without any hurry. Besides, if you see fresh goods first, it gives you a “feel good” impression of freshness, so you can not help spending your money.
Maybe you go to the meat department then. There is some meat on sale, and you want to find it. The manager of the supermarket knows where customers enter the meat department. The cheaper meat is at the other end of the meat department, away from where the customers enter. You have to walk past all the expensive meat before you find the cheaper meat. Maybe you will buy some of the expensive meat instead of the meat on sale.
Most of the food in supermarkets is very attractive. It all says “Buy me quickly!” to the customers. The fresh fruit and vegetables say “Buy me quickly!” as you walk by. The expensive meat says “Buy me quickly!” The supermarket tells you what to buy.Some supermarkets play soft, slow music because it ______.
| A．makes customers walk slowly and buy more |
| B．can help customers get the things they want |
| C．can make customers relaxed and happy |
| D．can tell customers exactly where to go |
The manager knows ______.
| A．where customers come from |
| B．which customers like slow music |
| C．where fresh meat should be put |
| D．which customers like cheap meat |
When walking past the expensive meat, the customers will ______.
| A．pay no attention to it | B．possibly buy some |
| C．look for some cheap meat | D．feel uncomfortable |
If you see fresh goods first in the supermarket, ______.
| A．you know where to get things |
| B．it brings you good luck |
| C．it makes you spend less money |
| D．you’ll get a fresh impression |
Supermarket managers make the food attractive so that ______.
| A．the customers will buy more | B．it looks very expensive |
| C．the customers come often | D．it seems cheap and fine |
Finally, I got a part – time job working at the local coffee shop. I had figured that the job would be easy. However, the actual situation was not what I had expected. The customers were hard to please. There was always too much sugar, too little ice, or not enough skimmed milk. However, I kept at it.
One rainy day, Hank, one of my regular customers, came in looking sad and defeated. I asked what the problem was and if we could help, but Hank wouldn’t tell me any details. He just said he felt like going to bed, pulling the sheets up over his head, and staying there for a few days. I knew exactly how he felt.
Before he left, I handed him a bag of his favorite type of doughnuts along with his iced coffee. He looked at me skeptically because he hadn’t ordered anything else except iced coffee.
“It’s on me,” I told him. “Have a nice day.”
He smiled and thanked me before turning around and heading back out into the rain.
The next day was a horrible one. The rain kept pouring down and I spent my afternoon hanging out the window, handing people their orders. What’s worse, no one felt like tipping that day.
However, around 7:00 pm, Hank drove up to the window. Instead of ordering anything, he handed me a single pink rose and a little note. He said that few people take the time to care about others nowadays and he was glad there were still people like me in the world. I was speechless and very touched; I hadn’t thought that I had done anything incredible.
The note read:
Christine,
Thanks for being so sweet, kind and thoughtful yesterday. I was sincerely touched by you. It is so nice to meet someone that’s nice, warm, sensitive and unselfish. Please don’t change your ways because I truly believe that you will excel. Have a great day!
Hank
Later, I did come across more complaining customers. But anytime I felt sad or just sick of coffee, I thought of Hank and his kindness. Then I would smile, hold my head up high, clear my throat and ask politely, “How can I help you?”How did the author feel after he began to work at the coffee shop?
| A．Disappointed. | B．Confused. | C．Excited . | D．Satisfied. |
What happened to the regular customer of the author?
| A．He was very sick and had to stay in bed for some days. |
| B．He was not satisfied with the coffee served to him. |
| C．He was anxious to stay at home for a long time. |
| D．He was not feeling himself for some reasons. |
What does the underlined word “skeptically” probably mean in the passage?
| A．questioningly | B．hopefully | C．anxiously | D．excitedly |
It was Hank who helped the author realize the importance of .
| A．patience in one’s work |
| B．being kind to regular customers |
| C．taking time to care about others |
| D．sticking to one’s own career |
What is the best title of the passage?
| A．Coffee Shop Kindness | B．A Warm – hearted Man |
| C．My Part – time Job | D．A Horrible Raining Day |