Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut he greenhouse gases they send out, which are thought to be responsible for global warming.
Thanks to special bacteria in their stomachs, kangaroo flatulence(腸胃氣脹)contains no methane(甲烷)and scientists want to transfer that bacteria to cattle and sheep who produce large quantities of the harmful gas.
While the usual image of greenhouse gas pollution is a billowing smokestack (煙囪) pushing out carbon dioxide, farm animals’ passing wind contribute a surprisingly high percentage of total emissions (排放物)in some countries.
“Fourteen percent of emissions from all sources in Australia are from enteric methane from cattle and sheep,” said Athol Kleve, a senior research scientist with the Queensland state government.
“And if you look at another country such as New Zealand, which has got a much higher agricultural base, they're actually up around 50 percent, ” he said.
Researchers say the bacteria also make the digestive process much more efficient and could potentially save millions of dollars in feed costs for farmers.
But it will take researchers at least three years to isolate (分離) the bacteria, before they can even start to develop a way of transferring it to cattle and sheep.
Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos.
The idea is controversial (有爭(zhēng)議的), but about 20 percent of health-conscious Australians are believed to eat the national symbol already.
“It's low in fat, it’s got high protein levels and it's very clean in the sense that basically it's the free-range (放養(yǎng)的) animal,” said Peter Amp of the University of New South Wales's institute of environmental studies.
【小題1】Scientists intend to put bacteria into cattle and sheep _________.
| A．so that they can make full use of special bacteria |
| B．to help Australian farmers to earn more money |
| C．so that they can protect Australian ecosystem |
| D．to prevent them from sending out harmful gases |
| A．cattle and sheep produce more carbon dioxide |
| B．less cattle and sheep are raised in New Zealand |
| C．farm animals are responsible for greenhouse gases |
| D．New Zealand has the most animals in the world |
| A．Australians should farm fewer cattle and sheep and just eat more kangaroos. |
| B．The bacteria could make the digestive process much more efficient. |
| C．Australians should give kangaroo - style stomachs to cattle and sheep. |
| D．The bacteria could save millions of dollars in feed costs for farmers. |
| A．it is rich in protein | B．it is cheaper than beef |
| C．it is high in fat | D．it is more delicious than sheep |
【小題1】D
【小題2】C
【小題3】A
【小題4】A
解析試題分析：文章主要是介紹了一項(xiàng)最近關(guān)于溫室氣體排放的研究。為了減少導(dǎo)致全球變暖的溫室氣體的排放，澳大利亞科學(xué)家目前正在想辦法將牛羊胃變成袋鼠式的胃。袋鼠胃中有一種特殊的細(xì)菌能使其放的屁中不含有甲烷�？茖W(xué)家想將這種細(xì)菌移至牛羊的胃中，以抑制它們所排放的大量有害氣體。另一組科學(xué)家建議澳大利亞人應(yīng)少養(yǎng)牛羊，多吃袋鼠肉。
【小題1】考查推理判斷。從文章第一﹑二自然段“為了減少導(dǎo)致全球變暖的溫室氣體的排放，澳大利亞科學(xué)家目前正在想辦法將牛羊胃變成袋鼠式的胃。袋鼠胃中有一種特殊的細(xì)菌能使其放的屁中不含有甲烷。科學(xué)家想將這種細(xì)菌移至牛羊的胃中，以抑制它們所排放的大量有害氣體。”可推斷得知D
【小題2】考查細(xì)節(jié)理解。從第四段的句子：“Fourteen percent of emissions from all sources in Australia is from enteric(腸的) methane from cattle and sheep,” said Athol Klieve, 可知Athol Klieve認(rèn)為,溫室氣體越來越多主要是因?yàn)檗r(nóng)場(chǎng)的動(dòng)物造成的。選C
【小題3】猜詞題：從上面第八段的內(nèi)容：Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos.可知另一組科學(xué)家建議澳大利亞人應(yīng)少養(yǎng)牛羊，多吃袋鼠肉。這里的另外一種想法就是這個(gè)，選A。
【小題4】細(xì)節(jié)題：從最后一段的句子：“It's low in fat, it’s got high protein levels and it's very clean in the sense that basically it's the free-range (放養(yǎng)的) animal,” 可知Peter Amp 認(rèn)為袋鼠肉富含蛋白質(zhì)，選A
考點(diǎn)：考查科普類短文
| 年級(jí) | 高中課程 | 年級(jí) | 初中課程 |
| 高一 | 高一免費(fèi)課程推薦！ | 初一 | 初一免費(fèi)課程推薦！ |
| 高二 | 高二免費(fèi)課程推薦！ | 初二 | 初二免費(fèi)課程推薦！ |
| 高三 | 高三免費(fèi)課程推薦！ | 初三 | 初三免費(fèi)課程推薦！ |
科目：高中英語 來源： 題型：閱讀理解
The sea has always interested man. From it he can get food, minerals, and treasure. For thousands of years, he could sail on it. But he could not go far beneath its surface.
Man wants to explore deep into the sea. However, he is not a fish. He must breathe air, so he can't stay under the water's surface for any length of time. To explore deep water, man faces even more dangers and problems.
A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a nose and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. His body is under great pressure.
When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles. The diver is then suffering from the bends. The bends can cause a diver to double up in pain. They can even kill him.
【小題1】On the whole, this passage is about ________.
| A．special mixtures of gases in deep sea |
| B．the problems man faces in deep sea diving |
| C．a(chǎn)ir pressure under the surface of sea water |
| D．a(chǎn) kind of illness that man suffers in the sea |
| A．deep divers should be in good health |
| B．divers explore the deep sea only for treasure |
| C．diving under the water too quickly causes a kind of illness |
| D．there is a special mixture of gases under the sea |
| A．the sea began to interest man a few years ago |
| B．man is not at home deep in the sea |
| C．a(chǎn)ll divers will get the bends sooner or later |
| D．the air in the sea water will kill a diver if he is not careful |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
Plastic is everywhere because plastic is an extremely useful material. It is cheap, strong and lightweight. What’s more, it can take on nearly any form or shape, from soft and stretchy (有彈性的) to hard and glasslike.
Plastic, however, is far from perfect. It may even be bad for us. Studies now suggest that poisonous chemicals can get out of some types of plastic, get into our bodies, and cause a variety of health problems, including cancer, birth defects and attention deficit hyperactivity disorder (注意缺陷障礙).
Two types of chemicals in particular have raised special concern lately. They are called phthalates (鄰苯二甲酸鹽) and Bisphenol-A (二酚基丙烷), BPA for short. Not all plastic products contain them. But the ones that do are surrounded by controversy (爭(zhēng)議). That’s because experts disagree on how dangerous these chemicals are.
Plastic is a single word, but plastic isn’t just one thing. What all plastics share in common are plasticizers -- special chemicals that allow the material to be changed into nearly any shape or texture. Plasticizers (塑化劑) are added to plastic during the manufacturing process.
Phthalates and BPA are two types of plasticizers that work in different ways. Phthalates add softness to things like shampoo bottles, raincoats and rubber. They are also used in perfumes and makeup. BPA, on the other hand, gives a hard, clear, almost glasslike feel to products such as infant bottles. BPA also appears in food and soda cans, DVDs and other unexpected places.
How do these chemicals get into us? When plastic is heated in the microwave or dishwasher, chewed on or scratched, the chemicals can seep (滲透) out of the plastic. Even though we can’t see them, we eat them, drink them and breathe them in.
Scientists and parents are especially worried about young children, who tend to chew on everything, including plastic. Dozens of countries, including the European Union, Japan, Canada and Mexico have already banned phthalates from products made for children younger than three. California and Washington have done the same. And a number of other states are considering similar rules. As for BPA, Canada became the first country to ban the chemical from baby bottles. A dozen states are considering it.
【小題1】What can we know about the plastic from the first paragraph?
| A．Its characters and effects. | B．Its wide use and bad points. |
| C．Its importance and chemicals. | D．Its popularity and advantages. |
| A．A soft plastic cup. | B．A pencil eraser. |
| C．A baby milk bottle. | D．A new perfume. |
| A．through mouth or nose | B．through blood transfusion |
| C．by feeling plastic products | D．by heating in the microwave |
| A．A new ban on plastic products. | B．Problems caused by the plastic. |
| C．Good points of the plastic. | D．The use of plasticizers. |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
Satellites are an important part of our ordinary lives．For example, the information for weather forecasts is sent by satellite．Some satellites have cameras which take photographs of the Earth to show how clouds are moving．Satellites are also used to connect our international phone calls．
Computer connections of the World Wide Web and Internet also use satellites. Many of our TV programs come to US through satellites．Airplane pilots also sometimes use a satellite to help them find their exact location．
We use satellites to send television pictures from one part of the world to another．They are usually 35，880 kilometers above the equator．Sometimes we can see a satellite in the sky and it seems to stay in the same place．This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates．A satellite must orbit the Earth with its antennae(天線)facing the earth．Sometimes, it moves away from its orbit，So there are little rockets on it which are used to put the satellite back in the right position．This usually happens about every five or six days．
Space is not empty! Every week, more and more satellites are sent into space to orbit the Earth．A satellite usually works for about 10-12 years．Satellites which are broken are sometimes repaired by astronauts or sometimes brought back to Earth to be repaired．Often，very old or broken satellites are left in space to orbit the Earth for a very long time．This is very serious because some satellites use nuclear power and they can crash into each other．
【小題1】Which of the following is NOT done by satellites according to the passage?
| A．Sending information for weather forecast |
| B．Taking photographs of the Earth |
| C．Sending TV pictures |
| D．Providing food for airplane pilots |
| A．35,880 kilometers per hour． | B．335,880 kilometers per hour |
| C．11,000 kilometers per hour． | D．110,000 kilometers per hour |
| A．In order to take photographs |
| B．In order to stay in a certain position in the orbit |
| C．In order to move away from its orbit |
| D．In order to send television pictures． |
| A．A satellite |
| B．A little rocket |
| C．A satellite seems to stay in the same place in the sky |
| D．The satellite puts the rockets in the right position． |
| A．A satellite usually works for about 10-12 years． |
| B．Every time a satellite gets broken，it is brought back to the Earth to be repaired． |
| C．A broken satellite is never left in space |
| D．They often crash into each other． |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
While nature lovers across the world wish all humans to realize the significance of their natural surroundings ,many Australians are turning caring for the environment into a way of life.
Julie Astonis ,an Australian housewife in Brisbane is one such example, Even though autumn is approaching Australia’s Brisbane in April, one can still watch colorful blooming （盛開的）flowers in Julie’s little garden, as she tells that in her community, “Each of us has a beautiful yard, The whole community, from children to elderly people, takes care of the environment as if they are taking care of their own garden.”
“Gardening is the most popular club in our community,”she says, “A lot of retired people don’t just regularly organize gardening lectures, but also personally visit families in the community to provide gardening training , So you can see that flowers continue to bols-som in our gardens throughout the year.”
Talking about her people’s sense of care for the environment, Julie says when people in the community take along their dog, they always carry a garbage bag to deal with the dog’s waste, “In our community ,you will never experience the embarrassment of stepping on the dirty waste while you are walking on the grass,”says Julie with a smile,“Taking care of the dog’s waste can also help to develop children’s sense of responsibility!”
As to protecting water resources , the Australian government has made strict rules for families, Julie says, “We certainly would not use tap water to water the flowers!”She ways almost every family in her community has a huge tank used to store rainwater, which is later used as the resource of all outdoor water use, connect the water tank with their toilets.
【小題1】From the first three paragraphs we learn that .
| A．gardening is popular in most part of Australia |
| B．April is a great time for people to enjoy flowers |
| C．it’s not easy to keep a garden without proper training |
| D．Julie’s community has a deep sense of caring for nature |
| A．She takes pride in her community. |
| B．She once stepped on a dog’s waste. |
| C．She is quite in favor of raising a dog. |
| D．She finds it embarrassing to walk on the grass. |
| A．rainwater is not the best resource |
| B．her community owns a public tank |
| C．her community makes full use of resources |
| D．it is not necessary to water flowers very often |
| A．Two | B．Three | C．Four | D．Five |
| A．Love nature, the Australian way | B．How Australians save resources |
| C．How Australians lead their life | D．Protect nature, a must of life |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
Societies all over the world name places in similar ways. Quite often there is no official naming ceremony but places tend to be called names as points of reference by people. Then an organized body steps in and gives the place a name. Often it happens that a place has two names: One is named by the people and the other by the government. As in many areas, old habits died hard, and the place continues to be called by its unofficial name long after the meaning is lost.
Many roads and places in Singapore are named in order that the pioneers will be remembered by future generations. Thus we have names such as Stamford Road and Raffles Place. This is in keeping with traditions in many countries ---- in both the West and the East.
Another way of naming places is naming them after other places. Perhaps they were named to promote friendships between the two places or it could be that the people who used to live there were originally from the places that the roads were named after. The mystery is clearer when we see some of the roads named in former British bases. If you step into Selector Airbase you will see Piccadilly Circus ---- obviously named by some homesick Royal Air Force personnel.
Some places were named after the activities that used to go on at those places. Bras Basah Road is an interesting example, “Base Basah” means “wet rice” in Malay. Now why would anyone want to name a road “Wet Rice Road”? The reason is simple. During the pioneering days, wet rice was laid out to dry along this road.
A few roads in Singapore are named by their shapes. There is “Circular Road” for one. Other roads may have parts of their names to describe their shapes, like “ Paya Lebar Crescent”. This road is called a crescent (月牙) because it begins on the main road, makes a crescent and comes back to join the main road again.
【小題1】We learn from Paragraph 1 that _____.
| A．the government is usually the first to name a place |
| B．a(chǎn) ceremony will be held when a place is named |
| C．people prefer the place names given by the government |
| D．many places tend to have more than one name |
| A．Selector Airbase. | B．Raffles Place. |
| C．Piccadilly Circus. | D．Paya Lebar Crescent. |
| A．Change suddenly. | B．Change greatly. |
| C．Disappear very slowly. | D．Disappear quickly. |
| A．a(chǎn)fter a place | B．a(chǎn)fter an activity |
| C．a(chǎn)fter a person | D．by its shape |
| A．The way Singaporeans name their places is unique. |
| B．Some places in Singapore are named for military（軍事） purposes. |
| C．Young Singaporeans have forgotten the pioneers. |
| D．Some place names in Singapore are the same as in Britain. |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
In a recent study, researchers have estimated the energy required to produce bottled water, including the energy required to manufacture plastic, make the plastic into bottles, process the water, fill and seal the bottles, transport the bottles, and chill the bottles for use. Combining all the energy input totals for treatment and distribution, researchers found that producing bottled water requires between 5.6 and 10.2 million joules(焦耳) of energy per liter, depending on transportation factors. That's up to 2, 000 times the energy required to produce tap water.
To break down the energy requirements, researchers found that producing the plastic bottles and transporting the bottles greatly dominated(控制) the energy input. Although some companies are experimenting with producing lightweight bottles or using recycled materials, the researchers calculated that the manufacturing cost is about 4 million joules of energy per plastic bottle weighing 38 grams, and the cap weighing 2 grams.
“Our previous work had suggested that bottled water production was an energy intensive process, but we were surprised to see the results, ” the researchers said.
Transportation costs vary depending on the distance and mode of transport and both factors depend on the type of bottled water. There are two main kinds of bottled water in the US:” spring water” which comes from an underground spring and “purified water”,which is city tap water that has received further treatment. For purified water distributed locally by truck within Los Angeles, the total transportation energy is about 1.4 million joules per liter. In the second situation, spring water shipped from Fiji (such as Fiji Spring Water) across the Pacific to Los Angeles, and then delivered locally by truck requires about 4 million joules per liter for transportation. For the spring water, the transportation energy equaled (in the case of Fiji) the energy required to produce the bottle.
With this data, the researchers hope that future studies will have the ability to make specific estimates for different situations, and possibly find ways to cut energy costs.
【小題1】From the first Paragraph we can know that the energy required to ______.
| A．produce bottled water includes the energy required to drink it |
| B．distribute bottled water includes the energy for producing the bottles |
| C．distribute bottled water is much smaller than the energy for treating it |
| D．produce bottled water is much smaller than the energy for producing tap water |
| A．to fill tap water into the plastic bottles directly |
| B．to replace the plastic bottles with metal containers |
| C．to produce lightweight bottles with recycled materials |
| D．to use bicycles to transport and deliver bottled water locally |
| A．Treatment of bottled water needs no energy input at all. |
| B．Bottled water production is an energy intensive process. |
| C．Transportation of bottled water takes up the most energy input. |
| D．Production of the plastic bottles greatly dominated the energy input. |
| A．there are two main kinds of bottled water in the US |
| B．world consumption of bottled water has been increasing |
| C．transportation costs have something to do with the mode of transport |
| D．bottled water produced in Spring is more expensive than purified water |
| A．To help consumers themselves make more environmentally sustainable choices. |
| B．To advise the government to take severe measures to stop producing bottled water. |
| C．To urge the consumers to drink tap water instead of bottled water for the sake of the earth. |
| D．To try the best to find ways to produce bottled water cheaply and quickly for the companies. |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
We can stay young forever. That is the message Dr. Shen Ziyin wants to give the world. And the Chinese doctor claims that he has found an answer to the problems of aging.
His solution is a herbal medicine to slow the process of aging.
Dr. Shen Ziyin has been trained in Western medicine. At the same time he studied traditional Chinese medicine. And, he has been working for the past forty years to put together the best of both and find a cure for aging. He has
taken a hint from its aging process. It is responsible for the level of activity that the human bodies go through Studies conducted by Dr.Shen show that herbal medicine based on the shen system slow the the ancient Chinese medicine system called “shen”.
According to Shen, it is the kidney（腎臟）which adjusts the functioning of the body as well as aging process, says a report in The Telegraph newspaper.
We notice that when people grow old, they have reduced strength, loss of hair, backache, weakness in general, and wrinkles, among others. This happens because when people grow old, their bodies produce T-cells. These T-cells contain a particular substance called Fas. Fas makes the cells in the body destruct themselves.
So the only way to slow down aging is to slow the production of T-cells in the body. This can happen if people eat low calorie food. Then the body is not active enough to produce extra T-cells. But, is going hungry all the time a good price to pay for staying young?
This is where Dr. Shen’s herbal medicine comes in. But how effective it will be, only time can tell.
【小題1】How did Dr. Shen find the solution to the problem of aging?
| A．By studying Western medicine. |
| B．By learning traditional Chinese medicine. |
| C．By combining both Western and Chinese medicine. |
| D．By doing research on both Western and Chinese people. |
| A．Medical treatment. | B．People’s good kidney. |
| C．Level of people’s activity. | D．Positive life attitude. |
| A．their bodies produce T-cells |
| B．their bodies are unable to fight diseases |
| C．they have reduced strength, loss of hair |
| D．they become weaker and weaker |
| A．producing more low calorie food allows people to keep young |
| B．the more Chinese herbal medicine people drink, the better for health |
| C．people should try to quicken the production of T-cells in the body |
| D．it remains unknown how effective Dr. Shen’s herbal medicine is |
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
When Scotsman Alexander Graham Bell invented the telephone in 1876, it was a revolution in communication． For the first time, people could talk to each other over great distances almost as clearly as if they were in the same room． Nowadays, though, we increasingly use Bell' s invention for taking photographs, accessing the internet, or watching video clips, rather than talking． Over the last two decades a new means of spoken communication has appeared: the mobile phone．
The first real mobile telephone call was made in 1973 by Dr Martin Cooper, the scientist who invented the modem mobile handset． Within a decade, mobile phones became available to the public． The streets of modem cities began to feature sharp-suited characters shouting into giant plastic bricks． In Britain the mobile phone quickly became the same with the "yuppie" , the new type of young urban professionals who carried the expensive handsets as status symbols． Around this time many of us said that we would never own a mobile phone．
But in the mid-90s, something happened． Cheaper handsets and cheaper calling rates meant that, almost overnight, it seemed that everyone had a mobile phone． And the giant plastic bricks of the 80s had changed into smooth little objects that fitted nicely into pockets and bags．
Moreover, people' s timekeeping changed． Younger readers will be amazed to know that, not long ago, people made spoken arrangements to meet at a certain place at a certain time． But later Meeting times became approximate under the new order of communication: the Short Message Service （SMS） or text message． Going to be late? Send a text message! It takes much less effort than arriving on time, and it' s much less awkward than explaining your lateness face to face and the text message has changed the way we write in English． Traditional rules of grammar and spelling are much less important when you' re sitting on the bus, hurriedly typing "Will B 15mm late - C U @ the bar． Sorry! - ）"．
Alexander Graham Bell would be amazed if he could see how far the science of telephony has progressed in less than 150 years．If he were around today, he might say "That' s gr8! But I' m v busy rite now．Will call U 2nite．"
【小題1】What does the underlined part in Para． 2 refer to?
| A．Houses of modern cities． | B．Sharp-suited characters． |
| C．New type of professionals． | D．Mobile phones． |
| A．People were more likely to be late for their meeting． |
| B．SMS made it easier to inform each other． |
| C．Young people don' t like unchanging things． |
| D．Traditional customs were dying out． |
| A．Call U@ SKUg8 2nite． | B．IM2BZ2CU 2nite． |
| C．CU@ the bar g8 2nite． | D．W84U@ SKUg8 2nite． |
| A．Alexander Graham' s invention． |
| B．SMS @ a new way of communication． |
| C．New functions of the mobile telephone． |
| D．The development of the mobile phone． |
查看答案和解析>>
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話：027-86699610 舉報(bào)郵箱：58377363@163.com