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Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money. To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part -drivers.
DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance. One had its brake lock up in the starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after 1.9 miles.
One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote (远距离的) control. One went a little more than a mile and rushed into a fence; another managed to go for six miles but stuck on a rock. The “winner,” if there was any, reached 7.8 miles before it ran into a long, narrow hole, and the front wheels caught on fire.
“You get a lot of respect for natural abilities of the living things,” says Reinhold Behringer, who helped design two of the car-size vehicles for a company called Sci-Autonics. “Even ants (蚂蚁) can do all these tasks effortlessly . It’s very hard for us to put these abilities into our machines.”
The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately, Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice off her face, but she already knows that when there’s a cookie in the kitchen she has to climb up the table, and that when she gets to the cookie it will taste good. She is more advanced, even months old, than any machine humans have designed.
Watchers doubted if any of the vehicles could finish the race because        .

A.they did not have any human guidance
B.the road was not familiar to the drivers
C.the distance was too long for the vehicles
D.the prize money was unattractive to the drivers

DARPA organized the race in order to         .

A.raise money for producing more robotic vehicles
B.push the development of vehicle industry
C.train more people to drive in the desert
D.improve the vehicles for future wars

From the passage we know “robotic vehicles” are a kind of machines that         .

A.can do effortlessly whatever tasks living thing can
B.can take part in a race across 142 miles with a time limit
C.can show off their ability to turn themselves upside down
D.can move from place to place without being driven by human beings

In the race, the greatest distance one robotic vehicle covered was          .

A.about eight miles B.six miles
C.almost two miles D.about one mile

In the last paragraph, the writer implies that there is a long way to go         .

A.for a robotic vehicle to finish a 142-mile race without any difficulties
B.for a little child who has just learned to walk to reach the cookie on the table
C.for a robotic vehicle to deal with a simple problem that a little child can solve
D.for a little child to understand the importance of wiping apple juice off its face
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Cities in Europe and around the world may be growing “bike trees” in the near future. Invented by Japan’s JFE engineering Corp., the invention proved useful in the busiest parts of this nation’s crowded cities.
Local governments of Japan have struggled for ways to encourage people to park their bikes considerately, particularly close to big stations, but that may block some roads and entrances to home and businesses. “Our cities do not have a lot of space for any kind of parking, including bicycles.” said Mitsuharu Oshima, a spokesman for JFE Engineering. The bike tree comes in two types; one in a tower that is above ground, and on the contrary, the other in a subterranean structure.
A cyclist registers(登记)with the operator of the equipment, pays a monthly fee and pushes the wheels of his bicycle into restraints at the base of the bike tree. Each bicycle is fitted with an electronic card with the owner’s details. A mechanical arm then pulls the bike into the base of the tower and moves it to a free location inside. To collect the bike later, the cyclist puts his card through a reader and his bike is automatically (自动地)returned to him in seconds. “The science of the equipment has been difficult----even though they may look simple ----because bikes come in many different shapes and sizes.” said Oshima.
As well as clearing away the road, bicycles cannot be stolen from a bike tree. There are presently versions at seven sites in Japan and two others are under construction, while work is under way on an even larger version----with room for 9,400 bicycles---in Thailand. And Oshima believes that the idea could catch on in Europe, particularly in countries such as France, Holland and Denmark, where cycling is so popular.
What is the right order of the following things when you use the bike tree?
① the wheels of the bicycle are put into restraints at the base
② the card is read and the bike is automatically returned
③ an electronic card with the owner’s details is given
④ the bike is pulled and moved to a free location inside

A.③②①④ B.②①④③ C.③①④② D.②④③①

What made it difficult to design “bike trees”?

A.The location of “bike trees”
B.The differences of the bikes
C.The method of finding enough bikes
D.The importance of traffic safety

From the passage, we can know that___________.

A.cyclists can use “bike trees” for free in Japan
B.there are seven “bike trees” used for holding bikes in Japan
C.local government of Japan encourage people to ride bikes
D.countries with many cyclists in Europe will like the idea of “bike trees’

Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of areas for burying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to connect packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realise just how much unnecessary material we are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.
What does the underlined phrase “that over-consumption” refer to?

A.Using too much packaging.
B.Recycling too many wastes.
C.Making more products than necessary.
D.Having more material than is needed.

The author uses figures in Paragraph 2 to show _______.

A.the tendency of cutting household waste
B.the fact of packaging overuse
C.the rapid growth of supermarkets
D.the increase of packaging recycling

What can be inferred from Paragraph 4?

A.Unpackaged products are of bad quality.
B.Supermarkets care more about packaging.
C.It is improper to judge quality by packaging.
D.Other products are better packaged than food.

What can we learn from the last paragraph?

A.Needless material is mostly recycled.
B.Fighting wastefulness is difficult.
C.People like collecting recyclable waste.
D.The author is proud of their consumer culture.

When you have a question about something, where do you go? For many people the answer is simple as they can go online to a search engine like Google or Yahoo. But what about people in rural or underdeveloped areas who may have no way to get on the Internet?
A business and international development professor in California, Rose Shuman, found an answer for them: Question Box. Question Box is a service that provides answers---free of charge--- for people who cannot search the Internet directly. The users of Questions Box might be those who might not be able to read, or simply have no access to the Internet.
Question Box began three years ago in India. People used a metal call box with a push-to-talk button to connect a live operator. Rose Schuman explained,” You just need to push a big green button on the box which will connect you directly to our operators who are sitting in front of computers, and speak your language. You can ask them any sort of question you want, and they’ll look it up in English or in Hindi, or whatever the main language is, and translate the answer back for you.”
The service is currently offered in two villages. The latest version of the box uses mobile phone technology, and solar panels in case the electrical power fails. Rose Shuman says the aim was to make the box as easy as possible for users, “It is very efficient (效率高的). Rather than try to bring a lot of difficulties to them and expect them to spend a lot of time to learn how to use the Internet, the idea was to make a technology that even Grandma could use.”
In April 2009, Question Box was introduced to Uganda. Forty community workers with mobile phones connected villagers to call center operators in Kampala. The community workers went around telling people about the service. They wore T-shirts that said “Ask me.” But Internet service in Uganda proved slow and undependable. So Question Box teamed up with a local technology company to store information on a local server. That way, the researchers in Kampala could quickly search the database for answers.
The best title for the passage is __________.

A.Question Box ----taking the place of the Internet
B.Needing an answer? ----asking Question Box
C.Question Box ----A great invention in the world
D.Rose Shuman----- A professor helping the poor

In Rose Schuman’s opinion, the greatest advantage of Question Box is that______.

A.It is the most advanced in the world
B.It is more convenient to carry.
C.It is much easier to use
D.it saves much more energy

The underlined word “them” in the fourth paragraph refers to______.

A.the users B.the operators
C.the researchers D.Question Box workers

What can we know from the passage?

A.Question Box costs the users much less than the Internet.
B.Question Box operators can look for information in any language.
C.Question Box is more efficient in solving problems in underdeveloped areas.
D.Question Box can work without the help of the Internet in Uganda.

In most people’s opinion, the tiger is not an animal that we would ordinarily think of as being chicken. However, one tiger, which lives in an English zoo, turned out to be more cowardly( 胆小的) than his keepers could ever have imagined.
Tanvir, a two-year-old Bengal tiger, got stuck at the top of a new 5m-high activity tower in the zoo, after climbing it for the first time.
The wooden tower had been designed to provide mental exercise for Tanvir by testing his ability of dealing with troublesome situations, but after climbing it in just a few seconds, he lost his courage when it came to coming back down. Tanvir went on to spend nearly two days at the top of the tower trying to collect the courage to attempt to get down.
A spokesperson for the zoo said that several days before Tanvir had taken half an hour to get down a lower tower only 1.5m high, and the taller tower had clearly been too much challenging for him.
“Every time he got to the edge, he looked out, put a paw over, and thought, ‘no, I cannot make it!’”laughed Samantha Cordrey, Tanvir’s keeper. In the end Tanvir’s hunger defeated his fear, and after almost 48 hours he made his way down. Burying himself in a big meal just like a hungry pig, Tanvir seemed to forget such a shameful experience for a while.
It appears that his experience would not be the worst in Tanvir’s life if he continued to act like a chicken. It is not known whether he will take courage to go back up his exercise tower again.
The whole episode(插曲) only serves to show the difficulties faced by zoo staff in creating environments that will improve animals’ living ability in enclosed space.
When speaking of Tanvir’s shameful experience, Samantha Cordrey might feel it was_____.

A.funny B.surprising C.exciting D.unbelievable

What made Tanvir get down the 5m-high activity tower at last?

A.The coldness of the weather. B.The direction from his keepers.
C.The sufferings of being hungry D.The fear of being alone

Why does the author say “this experience would not be the worst in Tanvir’s life if…”(Paragraph 6)?

A.Because Tanvir’s keepers will design more difficult exercise for him.
B.Because Tanvir is so cowardly that he has little courage to meet greater
challenges.
C.Because Tanvir’s bad health will bring him much trouble in practice.
D.Because Tanvir is always careless and often causes trouble by accident.

The zoo designed the 5m-high activity tower to______.

A.make Tanvir become brave
B.improve Tanvir’s performance skills
C.let tourists watch Tanvir better
D.improve Tanvir’s living ability

A rainfores(雨林)is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16℃.Rainforests have a great effect on the world environment because they can take in(吸收) heat from the sun and adjust (调节)the climate. Without the forest cover, these areas would reflect more heat into the atmosphere,warming the rest of the world .Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters(灾害) all over the world.
In the past hundred years, humans have begun destroying rainforests in search of three major resources (资源): land for crops, wood for paper and other products, land for raising farm animals. This action affects the environment as a whole. For example,a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit(受益).
There are two main reasons for this. Firstly, when people cut down trees, generally they can only use the land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right now, but in the long run (长远看)it actually reduces the world’ s wood supply.
Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in (在于)the world’s shrinking rainforests.
..Rainforests can help to adjust the climate because they________.

A.reflect(反射) more heat into the atmosphere
B.bring about high rainfall throughout the world
C.rarely cause the temperature to drop lower than 16℃
D.reduce the effect of heat from the sun on the earth

..What does the word “this” underlined in the third paragraph refer to?

A.We will lose much more than we can gain.
B.Humans have begun destroying rainforests.
C.People have a strong desire for resources.
D.Much carbon dioxide comes from burning rainforests.

.What might be the best title for the text?

A.How to Save Rainforests B.How to Protect Nature
C.Rainforests and the Environment D.Rainforests and Medical Development

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