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A gadget which makes water out of air could become the greatest household invention since the microwave. http://www.7caiedu.cn/gaokao/beijing/
Using the same technology as a dehumidifier（除湿器），the Water Mill is able to create a ready supply of drinking water because it can always get it from an unlimited source—the air．http://www.7caiedu.cn/gaokao/beijing/
The company behind the machine says not only does it offer an alternative to bottled water inhttp://www.7caiedu.cn/gaokao/beijing/
developed countries, but it is a solution for the millions who face a daily water shortage．http://www.7caiedu.cn/gaokao/beijing/
The machine works by drawing in wet air through a filter（过滤器）and over a cooling instrument which changes it into water droplets．It can produce up to 12 liters a day．The Water Mill will also produce more water when storms pass over, as the amount of water which is contained in the air increases. In keeping with its eco-development, the machine uses the same amount of electricity as three lights. Inventor Jonathan Ritchey said, “The demand for water is off the chart. So people are looking for freedom from water distribution systems that are shaky and unreliable.”
The machine, which is about 3 feet wide, is likely to cost ￡800 when it goes on sale here in the spring. Its maker, Canadian Firm Element Four, roughly calculates that a liter of water costs around 20 pence to produce.
Environmentalists state that half the world’s population will face water shortage because of climate change by 2080. One in five is said to lack access to safe drinking.
The Water Mill is not effective in areas where the amount of water contained in the air is below about 30 percent, but in Britain that won’t be much of a problem.
1.What does the underlined word “it” refer to?
A．Drinking water. B．Invention. C．Microwave. D．Water Mill.
2.What do we learn about the machine?
A．It works in the same way as microwaves.
B．It is very expensive for families to afford.
C．It absorbs wet air and turns it into water.
D．It helps to make the water clean to drink. http://www.7caiedu.cn/gaokao/beijing/
3.What does the passage lead us to believe? http://www.7caiedu.cn/gaokao/beijing/
A．The cost of water will go up. B．Bottled water will disappear soon.
C．The machine is energy saving. D．The machine will be popular worldwide.
4.What’s the best title for the passage? http://www.7caiedu.cn/gaokao/beijing/
A．A New Way to Solve Water Problem. B．A Machine to Make Water out of Air.
C．A Dehumidifier to Produce Water. D．An Absolutely New Invention
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Smoking, which may be a pleasure for some people, is a series of discomfort for their fellows. Medical scientists have expressed their concern about effect of smoking on the health not only of those who smoke but also those who do not smoke. In fact, non-smokers who take in the air polluted by tobacco smoke suffer more than the smokers themselves. A great number of students are trying to persuade the university to forbid smoking in classrooms. Believe they are completely right in their aim. However, I think it more important to achieve this by calling on the smokers to use good judgment and to show concern for others. Smoking is not allowed in theaters, cinemas and in other public places. Therefore, smoking must be forbidden in our classroom. Although many people have passed away for having smoked a lot and we call on people to give up smoking, yet many more that are following will turn down what we say every day, above all, the young people smoke a lot more.
In the writer’s opinion, smoking does good to ________.
A. nobody B. some people C. smokers D. young people
The phrase “pass away” probably means ________.
A. leave one’s home B. lose one’s life C. pass by D. go away
According to the selection, which of the following is true?
A. Smokers suffer from the polluted air more than the non-smokers.
B. Non-smokers suffer from the polluted air more than the smokers.
C. Non-smokers suffer as much from the polluted air as the smokers.
D. Non-smokers don’t suffer so much from the polluted air as the smokers.
查看习题详情和答案>>阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
In the United States there was an unusual story telling of the daughter of an engineer．One day 36 walking along the bank of a lake, the girl happened to see 20 eggs laid by a wild goose．After some time the girl_37_the mother would not return to the eggs and she 38 to take them home．There she carefully 39 the eggs in the heat of a lamp．Several days 40 , the eggs broke and the baby geese came into the 41 Geese are known to take the first living thing 42 they see as their mother．Thus, to these 43 geese, the girl was their mother．
As they grew, the girl was able to 44 her birds to run across the grass, but she could not teach, them to _45_．The little girl became increasingly worried about this, both when 46 and in her dreams．Suddenly, she thought_47_a clever idea: she would fly a plane to guide them in 48 ．She asked her father for a plane and he made a small one for her．Caring about 49 safety, the father Hew the plane himself．However, the birds didn't 50 him．They all slept in the grass 51 .
The girl was so worried about it that one day the girl_52_into the plane and started it．Soon the plane left the_53_．Seeing their mother in the air, the birds 54 expanded their wings and 55 She flew the plane freely in the sky, with her young birds following．
A．since B．after C．while D．because
A．realized B．expected C．imagined D．admitted
A．helped B．decided C．afforded D．agreed
A．placed B．protected C．treated D．examined
A．ago B．out C．later D．long
A．family B．house C．home D．world
A．what B．which C．that D．who
A．great B．big C．shy D．young
A．ask B．lead C．want D．allow
A．fly B．race C．swim D．sing
A．asleep B．away C．around D．awake
A．of B．through C．over D．back
A．sky B．heaven C．flight D．plane
A．his B．her C．their D．its
A．respect B．remember C．follow D．receive
A．sadly B．instead C．hardly D．too
A．climbed B．looked C．drove D．fell
A．house B．floor C．water D．ground
A．secretly B．disappointedly C．patiently D．immediately
A．looked away B．set out C．went by D．turned back
查看习题详情和答案>>A kind of little cars may some day take the place of today’s ones. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking cars in cities, and the streets will be less crowded. Three such cars can fit in the space now needed for one car of the usual size.
The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 65 kilometers an hour.
The cars of the future will be fine for getting around the city, but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gasoline.
If big cars are still used along with the small ones, two sets of roads will be needed in the future. Some roads will be used for the gig, fast cars and other roads will be needed for the slower small ones.
1.There is much pollution in the air today because ___________.
A. people drive big cars
B. people drive little cars
C. the cars go 65 kilometers an hour
D. the cars can go 450 kilometers an hour
2.The usual size of cars today is _______ that of the future cars.
A. much smaller than B . much the same as
C. three times as large as D. a little larger than
3. Which of the following is NOT true?
A. Big cars cost more to own and to drive
B. Big cars are not useful for long trips
C. The cars of the future will be smaller than today’s cars.
D. Small cars are slower than big cars.
4.The street will be less crowded because ______________.
A there will be fewer cars in the future
B. driving future cars will be safer
C. there will be fewer passengers in the street
D. future cars will be much smaller
5. Two sets of roads may be needed in the future because_________.
A. there will be too many cars in the future
B. more and more people will get around a city
C. bit cars and little cars may be used along with each other
D. it looks more beautiful to have two sets of roads
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Plants are very important living things. Life could not go on if there were no plants. This is because plants can make food from air， water and sunlight. Animals and man cannot make food from air， water and sunlight. Animals get their food by eating plants and other animals. Therefore animals and man need plants in order to live. This is why we find that there are so many plants around us. If you look carefully at the plants around you， you will find that there are two kinds of plants： flowering plants and non-flowering plants. Flowering plants can make seeds. The seeds are protected by the fruits. Some fruits have one seed， some have two， three or four， and some have many seeds. But a few fruits have no seeds at all. An example of a fruit without seeds is the banana fruit. Most non-flowering plants do not grow from seeds. They grow from spores（胚芽）。 Spores are very small. Some spores are so small and light that they can float in the air. We may say that spores are quite the same as seeds. When these spores are all on wet and shady places， they usually grow into new plants.
The main idea of the first paragraph is that ______.
A. plants are important for life B. plants cannot grow without air
C. there are many plants in the world D. we can not live without water
Plants can make food from______.
A. flower， water and air B. water， sunlight and air
C. air， water and soil D. air， sun and light
What can we infer（推断） from the passage ？
A. Of all living things animals are most important
B. Spores are seeds C. All fruits of flowering plants have seeds
D. Without plants， man will die out
This passage may be taken from______.
A. a medicine book B. a novel
C. a science magazine D. an experiment report
The underlined word “protected” in the third paragraph can be replaced by ______.
A. damaged B. polluted C. prevented D. guarded
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