Tiny transmitters(发射机) fixed on the backs of the blue-green bees have allowed scientists to follow the insects as they fly for miles in search of rare flowers．
Working in Panama，scientists caught 17 bees of the common species and fixed a 300 milligram radio light onto the back of each．The signals they sent out were used to follow their movements in and around the forest where they lived．
Professor Martin，from Princeton University，US，and the Max Planck Institute for Ornithology in Germany，said，“By following the radio signals，we discovered that male bees spent most of their time in small centre areas，but could take off and visit areas farther away．One male even crossed over the shipping lanes in the Panama Canal，flying at least 5km，and returned a few days later．”
Researchers have struggled to follow the movements of bees before，following bees marked with paint or using radar which doesn’t work well in forests．
“Carrying the transmitter could reduce the distance that the bees travel，but even if the flight distances we record are the shortest distances that these bees can fly，they are impressive，long-distance movements，” said Dr．Roland Kays，from New York State Museum，a co-author of the research published today in the on-line journal．“This result helps to explain how these bees’ pollination(授粉) can be so rare．” Pollination by bees and other insects is the key to the diversity and continued growth of flowers and trees in some forests．
The new study is the first to use radio transmitters to follow bees in a forest．Similar research may now be carried in temperate forests，where bees also play a vital role．The main purpose of the passage is to___
| A．call on people to protect the bees for the environment |
| B．explain why the bees fly far away in search of flowers |
| C．introduce a modern way to follow the bees to readers |
| D．encourage the public to support the scientists' research |
What was the problem when researchers tried to follow the bees in the past?
| A．It was quite difficult to mark the bees |
| B．The radar itself didn't work very well |
| C．The bees weren't easy to be recognized |
| D．Environmental limits were hard to solve |
What Dr．Roland Kays said implied that____
| A．he didn't expect bees could fly so long a distance |
| B．The transmitter didn't have any effects on bees at all |
| C．He wanted to know how far bees could travel badly |
| D．The record was in fact as exact as he had thought |
Researchers follow the movements of bees mainly to___
| A．learn how far they can fly at most |
| B．discover how they affect the plants |
| C．correct some wrong ideas about bees |
| D．get to know where they enjoy living |
Supermarkets are trying out new computers that make shopping carts more intelligent(具备智能的). They will help shoppers find paper cups or toilet soap, and keep a record of the bill.
The touch-screen devices(触摸屏装置) are on show at the Food Marketing Institute’s exhibition here this week, “These devices are able to create value and get you around the store quicker,” said Michael Alexander, manager of Springboard Retail Networks Inc., which makes a smart cart computer called the Concierge.
Canadian stores will test the Concierge in July. A similar device, IBM’s “Shopping Buddy”, has recently been test-marketed at Stop & Shop stores in Massachusetts.
Neither device tells you how many fat grams or calories are in your cart, but they will flash you with items on sale. The idea is to make it easier for people to buy, not to have second thoughts that maybe you should put something back on the shelf.
“The whole model is driven by advertisers’ need to get in front of shoppers,” said Alexander. “They’re not watching 30-second TV ads anymore.”
People can use a home computer to make their shopping lists. Once at the store, a shopper can use a preferred customer card to start a system(系统) that will organize the trip around the store. If you’re looking for toothpicks, you type in the word or pick it from a list, and a map will appear on the screen showing where you are and where you can find them.
The device also keeps a record of what you buy. When you’re finished, the device figures out your bill. Then you go to the checker or place your card into a self-checkout stand and pay.
The new computerized shopping assistants don’t come cheap. The Buddy devices will cost the average store about $160,000, and the Concierge will cost stores about $500 for each device. The underlined word “they” (paragraph 1) refers to ______.
| A．supermarkets | B．shop assistants |
| C．shopping carts | D．shop managers |
Which of the following is the correct order of shopping with computerized shopping carts?
a. Start the system.b. Make a shopping list.
c. Find the things you want.d. Go to a self-checkout stand.
| A．abdc | B．bacd | C．acbd | D．bcad |
We can learn from the last paragraph that ______.
| A．intelligent shopping carts cost a large sum of money |
| B．the Concierge is cheaper than the Buddy devices |
| C．shop assistants with computer knowledge are well paid |
| D．average stores prefer the Concierge to the Buddy devices |
What might be the most suitable title for the text?
| A．New age for supermarkets |
| B．Concierge and Shopping Buddy |
| C．New computers make shopping carts smarter |
| D．Touch-screen devices make shopping enjoyable |
When Lew Alcindor was 13, and obviously still growing, a group of schools began offering him scholarships (奖学金)。 The Alcindors decided to send their only child to Power Memorial Academy, a small school on Manhattan’s West Side.
At Power, Alcindor came under the control of Coach Jack Donohue, a strict young an who already gained his fame as one of the best coaches in the city. Donohue brought Alcindor along slowly. As a first-year student, the boy was not able to do much but wave his long skinny arms and shoot a basket now and then. But by the second year, when he was 15 years old and nearly 7 feet tall, Alcindor was quick and skillful enough to make the high school All-American team and to lead Power to an undefeated season.
From then on he simply got better. Some rival coaches(对方教练) used to take their teams quickly away from the floor before Power warmed up so that their players would not see him any sooner than they had to. Wearing size 16 D shoes and sucking a lollipop(棒棒糖), Alcindor would loosen up by starting his leaping lay-ups(擦板球). Then he would casually shoot the ball with either hand, to the delight of the fans.
When reporters and photographers began to follow Alcindor closely, Donohue protected his boy firmly. He simply ordered Lew to talk to no member of the press, and this suited Lew fine. He was not comfortable talking to grown-ups, perhaps because he towered over them. Discouraged photographers began following him in secret as though he were an easily-frightened giraffe. Once after ducking into a subway to escape, Alcindor told a friend that it was all becoming like policemen and robbers. “People want you not for yourself,” Donohue warned him, “but because you’re a basketball player. Don’t forget that.” Many schools offer Alcindor scholarships because ______.
| A．he was young | B．he was hardworking |
| C．he was tall for his age | D．he was skillful at playing basketball |
Which of the following best describes Donohue as a young coach?
| A．serious, popular and slow | B．tall, skillful and successful |
| C．kind, powerful and undefeated | D．well-known, strict and experienced |
Why their team fail at last?
| A．Their teams refused to play Power. | B．Their teams feared to see Alcindor. |
| C．Their teams would lose courage. | D．Their teams would lose interest. |
What does the last paragraph mainly discuss?
| A．How Donohue protected Alcindor from the press. |
| B．How Alcindor disliked meeting reporters. |
| C．Why the press followed Alcindor closed. |
| D．Why the public wanted Alcindor badly. |
Millions of people visit Yosemite National Park every year to see the tall waterfalls and mountains. These mountains are a splendid sight when viewed from the valley floor. Lots of stores, hotels, and restaurants are needed to handle the crowds. Also, water, roads, and other service systems are part of the infrastructure（ 基础设施）that must be maintained.
Unfortunately, these systems are starting to break down. It is not just in Yosemite but in national parks around the nation.
Yosemite is thirty years old according to Dennis Galvin, a National Park Service worker. The park is not only old but worn out. Two or three times as many visitors come every year. That is too many visitors for the park to deal with.
Four years ago a storm washed out a water pipeline in the Grand Canyon. The National Park Service had to send water trucks to provide water for the visitors. Last month pipe almost broke again and roads had to be closed for a while.
Why hasn’t the National Park Service kept up the park repairs? There is lack of money. The United States has 378 mountains, parks, and wilderness areas. Between three and four billion dollars are needed for repairs.
Yosemite is one national park that does have money fro repairs. It has two hundred million dollars but cannot spend it any way it chooses. When the park workers started widening the road, they were forced to stop by the Sierra Club. The club claimed that the road work was damaging the Merced River that runs through the park.
A Sierra Club lawyer, Julia Olson, feels that the infrastructure needs to be moved out of Yosemite. That way less pressure will be put on the already crowed park. According to the text, the mountains in Yosemite look most splendid when
they are appreciated from _______ .
| A．the bottom of the valleys | B．the top of the mountains |
| C．the side of the mountains | D．the edge of the valleys |
National parks like Yosemite in the U.S. find it increasingly difficult to
meet the need of visitors because _______ .
| A．their transport management needs improving |
| B．they spend too much on their service systems |
| C．their service systems frequently go out of order |
| D．they need help from environmental organizations |
The main problem of Yosemite Park is its ________ .
| A．modern water pipes | B．overcrowdedness | C．lack of water | D．narrow roads |
According to the text, the Sierra Club is most likely to be _______ .
| A．an environmental group | B．an information center |
| C．a travel service | D．a law firm |
Compassion is a desire within us to help others. With effort, we can translate compassion into action. An experience last weekend showed me this is true. I work part-time in a supermarket across from a building for the elderly. These old people are our main customers, and it’s not hard to lose patience over their slowness. But last Sunday, one aged gentleman appeared to teach me a valuable lesson. This untidy man walked up to my register(收款机) with a box of biscuits. He said he was out of cash(现金), had just moved into his room, and had nothing in his cupboards. He asked if we could let him have the food on trust. He promised to repay me the next day.
Icouldn’t help staring at him. I wondered what kind of person he had been ten or twenty years before, and what he would be like if luck had gone his way. I had a hurt in my heart for this kind of human soul, all alone in the world. I told him that I was sorry, but store rules didn’t allow me to do so. I felt stupid and unkind saying this, but I valued my job.
Just then, another man, standing behind the first, spoke up. If anything, he looked more pitiable. “Charge it to me,” was all he said.
What I had been feeling was pity. Pity is soft and safe and easy. Compassion, on the other hand, is caring in action. I thanked the second man but told him that was not allowed either. Then I reached into my pocket and paid for the biscuits myself. I reached into my pocket because these two men had reached into my heart and taught me compassion. The aged gentleman who wanted to buy the biscuits ______.
| A．promised to obey the store rules |
| B．forgot to take any money with him |
| C．hoped to have the food first and pay later |
| D．could not afford anything more expensive |
Which of the following best describes the old gentleman?
| A．kind and lucky | B．poor and lonely |
| C．friendly and helpful | D．hurt and disappointed |
The writer acted upon the store rules because ______.
| A．he wanted to keep his present job |
| B．he felt no pity for the old gentleman |
| C．he considered the old man dishonest |
| D．he expected someone else to pay for the old man |
What does the writer learn from his experience?
| A．Wealth is more important than anything else. |
| B．Helping others is easier said than done. |
| C．Experience is better gained through practice. |
| D．Obeying the rules means more than compassion. |
Most people around the world are right-handed . This also seems to be true in history . In 1799 , scientists studied works of art made at different times from 1,500 B.C. to the 1950s . Most of the people shown in these works are right-handed , so the scientists guessed that right-handedness has always been common through history . Today , only about 10% to 15% of the world’s population is left-handed .
Why are there more right-handed people than left-handed ones ? Scientists now know that a person’s two hands each have their own jobs . For most people , the left hand is used to find things or hold things . The right hand is used to work with things. This is because of the different work of the two sides of the brain . The right side of the brain , which makes a person’s hands and eyes work together , controls the left person’s hands and eyes work together , controls the left hand . The left-side of the brain , which controls the right hand , is the centre for thinking and doing problems . These findings show that more artists should be left-handed , and studies have found that left-handedness is twice as common among artists as among people in other jobs .
No one really knows what makes a person become right-handed instead of left-handed . Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born . However , this doesn’t happen to everyone , so scientists guess there must be another reason why people become left-handed . One idea is that people usually get right-handed from their parents . If a person does not receive the gene（基因）for right-handedness , he / she may become either right-handed or left-handed according to the chance and the people they work or live with .
Though right-handedness is more common than left-handedness , people no longer think left-handed people are strange or unusual . A long time ago , left-handed children were made to use their right hands like other children , but today they don’t have to . After studying works of art made at different times in history , the scientists found .
A. art began from 1, 500 B.C.
B. the works of are ended in the 1950s
C. most people shown in the works of art are right-handed
D. most people shown in the works of art are left-handedHow many people in the world are left-handed now ?
| A．Less than one sixth . | B．More than a half . |
| C．About 40% . | D．The passage doesn’t tell us . |
What is the left hand for most people used to do ?
| A．It’s used to find or hold things . |
| B．It’s used to work with things . |
| C．It’s used to make a person’s eyes work together . |
| D．It’s the centre for thinking and doing problems . |
According to the passage , which of the following is NOT true ?
| A．No one really knows what makes a person become right-handed . |
| B．Left-handedness is cleverer than right-handedness . |
| C．Today children are not made to use their right hands only . |
| D．Scientists think there must be some reason why people become left-handed . |
The best title for this passage is .
| A．Scientist’s New Inventions |
| B．Left-handed People |
| C．Which Hand |
| D．Different Brains , Different Hands |