Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut the 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 huge chimney pushing out carbon dioxide, animals at home contribute a surprisingly high percentage of total emissions in some countries. “Fourteen percent of emissions from all sources in Australia is from 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. People are still arguing about this, 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.

1.Scientists try to give kangaroo-style stomachs to cattle and sheep to __________.

A. help them fight against different diseases.

B. reduce the amount of greenhouse gases.

C. get rid of the bacteria in their stomachs.

D. protect them from quantities of harmful gas.

2. The advantage of transferring the bacteria to cattle and sheep is that_____________.

A. it will take the researchers a long time.

B. cattle and sheep will eat more than usual.

C. it will help the farmers to save money.

D. the bacteria will make them grow quickly.

3. From this passage we can infer that___________.

A. scientists still don’t know how to transfer the bacteria to cattle and sheep.

B. people in Australia depend on kangaroos for food at the present time.

C. 14% of the greenhouse gases in New Zealand is from cattle and sheep.

D. nobody in Australia will be allowed to farm cattle and sheep in the future.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015-2016學(xué)年四川綿陽南山中學(xué)高二10月月考英語試卷（解析版） 題型：完形填空

閱讀下面短文，掌握其大意，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。

My husband, Tom, has always been good with animals, but I was still amazed when he befriended a female grouse (松雞)．It's impossible for a grouse to have any contact (接觸) with people．In fact, they're hard to spot, they usually fly off when they hear humans approaching.

This grouse came into our lives in ．Tom was working out in the field when he her walking around at the edge of the field．She was unafraid and seemed to be curious about what he was doing.

Tom saw the bird several times, and she got more comfortable around him．We quickly grew .of the bird and decided to call her Mildred.

One day, as Tom was working, Mildred came within a few feet of him to watch．Tom he didn't see her and kept working to see what she would do next.

Apparently, she didn't like to be ignored．She'd run up and peck (啄) at Tom's hands, then off to see what he would do．This went on for about 20 minutes, until Mildred became tired of the .and left.

As spring went and summer came, Mildred started to more and more often． Mildred felt comfortable enough to jump up on Tom's leg and stay long enough for me to get a picture of the two of them together．This friendly grouse soon felt not just with our family, but with anybody who walked or drove by.

When hunting season opened, we put a at the end of our driveway asking not to shoot our pet grouse．My father, who lived down the road, warned people not to shoot her．In fact, hunters would stop and take pictures, because they had never seen anything like her.

1.A．though B．because C．unless D．until

2.A．spring B．summer C．a(chǎn)utumn D．winter

3.A．got B．kept C．noticed D．imagined

4.A．naturally B．certainly C．normally D．surprisingly

5.A．shy B．a(chǎn)wkward C．friendly D．elegant

6.A．careful B．tired C．fond D．sick

7.A．supposed B．realized C．hoped D．pretended

8.A．put B．back C．set D．take

9.A．game B．work C．place D．man

10.A．give up B．come out C．turn over D．fly by

11.A．Eventually B．Suddenly C．Constantly D．Presently

12.A．comfortable B．guilty C．a(chǎn)nxious D．familiar

13.A．lantern B．sign C．gun D．loudspeaker

14.A．drivers B．farmers C．hunters D．tourists

15.A．just B．yet C．thus D．a(chǎn)lso

查看答案和解析>>

科目：高中英語 來源：2016屆山東德州高三上學(xué)期期中考試英語試卷（解析版） 題型：閱讀理解

Last month，my younger sister Michelle，four of my friends and I held our first charity art exhibitions．The exhibitions, containing 140 paintings，raised 44，000 yuan，all donated to Stepping Stones，a charity that supports poor children in China．

Ever since l was a little girl, I have been in love with art．I have always been fascinated with the idea of creating beauty and emotion-how imagination can transform a simple piece of paper into something beyond the possibilities of the real world．I watched others create magic by simply moving their hands，and felt thrilled as I gradually learned to do this myself．

Passion results in creation．In nine years，I had accumulated more pieces than I could count．My finished paintings were set aside，gathering dust as time passed．So I decided to hold exhibitions to find a home and some appreciation for my artwork．

Nonetheless，I was extremely nervous．After all，I am only a l5-year-old child who has a passion，but not necessarily one who creates artwork that others want to buy.

However，the turnout was more than I could ever have imagined，and the amount of money we raised quadrupled(四倍于)our original target．We were very lucky to find a charity，Stepping Stone，that would show us exactly how our money would be used：to teach English to poor children in the country．I was even offered an opportunity to teach the children myself．

Through this experience，I not only gained more confidence in my art，but also discovered its impact．I realized a paintbrush could paint not only a canvas，but also new opportunities for others who don’t have as many choices in who they want to be，or what they want to do．Although this cannot transform the world，this may transform the world for one child，or even more．

1.What does “this” in Paragraph 2 refer to?

A．Moving hands． B．Painting．

C．Changing the world． D．Using imagination．

2.By saying “Passion results in creation”, the author means she

A．decided to visit exhibitions of young artists

B．found a new interest besides painting

C．painted many pieces in nine years

D．created artwork that others want to buy

3.What can you know according to the last two paragraphs?

A．Stepping Stone is an educational organization．

B．Art changed the life of the author and others in a way．

C．Her original donation was expected about 44，000 yuan．

D．The author realized she had an advantage over others．

查看答案和解析>>

科目：高中英語 來源：2016屆山東濟(jì)南市高三上學(xué)期期末考試英語試卷（解析版） 題型：語法填空

閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容(1個(gè)單詞)或括號(hào)內(nèi)單詞的正確形式。

Many Americans believe Britons have bad teeth．But a new study shows Americans 1. (actual)have more dental 2. (problem)．

The study 3. (publish)in the British Medical Journal．The researchers from University College London，the National University of Colombia and the Harvard School of Public Health found that Americans are missing more teeth 4. people aged 25 and older．The researchers also found that poor people in the United States had 5.(bad)teeth than poor people in Britain．

People in Britain receive dental care through the National Health Service， 6. is funded by taxpayers．In the United States，people either pay for their dental care7. buy dental insurance．Many poor people in the United States do not have dental insurance and dental care is not affordable to8. (they)．

In 2004， 9. Organization for Economic Co-operation and Development found that Britain had the lowest number of people with bad，10.(miss)or filled teeth among all of its 34 member states．The United States was in the middle of the rankings．

查看答案和解析>>

科目：高中英語 來源：2016屆山東萊蕪鳳城高級(jí)中學(xué)高三上學(xué)期1月段考英語試卷（解析版） 題型：閱讀理解

Instagram is a fast，beautiful and fun way to share your life with friends and family．Take a picture or video，choose a filter to transform its look and feel．a(chǎn)nd then post to Instagram—it’s that easy．You can even share to Facebook．Twitter and more．It’s a new way to see the world．So many photos of food are contained on Instagram—now a pop-up diner in London is taking advantage of this new trend by letting people settle the bill for their meals simply by uploading photos of their dishes to social networks．

I always thought people’s taking pictures of their food was kind of silly，but at this new pop-up restaurant in the UK，I’d probably do it too．“The Picture House”is the world’s first pay-by-photo restaurant—yon order，click a photo of the food，share on Instagram and eat for free!

The testaurant belongs to frozen food giant(巨人)Birds Eye，who came up with the idea to cash in on people’s addiction with photographing food and sharing the pictures online．They conducted a survey and found out that more than half of the British population regularly took pictures of their meals．So they realized it was a better way to advertise their new dining range．

The pop-up diner was open in Soho，London for three days in May，and is now moving to other major UK cities．They serve two-course meals that customers don’t have to pay for，if they photo and Instagram it.

The restaurant is a part of Birds Eye’s “Food for Life”campaign，a new marketing project that aims at changing the way people look at frozen food．“Taking photos of food enables people to show off and to share their mealtime moments—from the everyday to the special，”said marketing director Margaret Jobling．

The reaction to the Picture House has been great so far And the pay-by-picture concept has proven to be an effective way．Alternative payment methods are actually gaining popularity among a lot of businesses．Last year in a care in Germany customers pay by how much time they spend there，not by what they eat．

1.Instagram probably is________．

A．a(chǎn) program used to share photos

B．a(chǎn) campaign of“Food for Life”

C．a(chǎn) restaurant free of charge

D．a(chǎn) new marketing project

2.What’s the author’s attitude to this new trend?

A．Confused B．Interested

C．Opposed D．Unconcerned

3.“The Picture House”encourages sharing photos of its food to_______．

A．raise the price of frozen food

B．create a new social media trend

C．a(chǎn)ttract more customers

D．reward the regular customers

4.Which of the following can serve as the best title for the passage?

A．Food for Life B．The Pop-up Diner

C．No Need to Pay D．Pay by Picture

查看答案和解析>>

科目：高中英語 來源：2016屆廣東廣州高三1月模擬考試英語試卷（解析版） 題型：完形填空

完形填空

閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出可以填入空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。

I lifted my wet woollen gloves to my face and wiped the snowflakes from my eyes. I could not feel my nose and my ________ formed a thick fog in the air. The biting wind was making me

________ . I was fed up! I didn’t want to be here. I wanted to go home. But Mum and Dad had ________me to go for a Sunday afternoon walk in the park. I could see my ________ in the snowy path, like a trail of breadcrumbs (一串面包屑) in the forest showing me the way ________ .

I stopped and listened to my ________. I could ________ the wind crying like a homeless dog hungry for a delicious ________ . The once-green tree ________ which used to wave gently in the breeze, had become bare, and the grass was covered with a ________ blanket of fresh snow. Then I saw a broken spider’s web shining golden beneath a pale sun. My breath was like silky soft ________ floating up into the freezing cold air.

Suddenly there was Mum, ________ handing me a big cup of hot chocolate. Her big smile immediately ________ my heart.

“Here you are, Jo. This will keep you ________ ,” she said as she placed a comforting arm around my shoulders and ________ her cheek against mine.

I slowly took a mouthful of the hot ________ and felt it slowly dripping down my throat like lava (熔巖) ________ down a mountainside. My wet woollen gloves were now warm, not ________ . My breath warmed, and I was ________ fed up or cold. I was happy and ________ .

1.A. sweat B. breath C. tears D. words

2.A. hungry B. thirsty C. cold D. tired

3.A. forced B. forbidden C. allowed D. needed

4.A. shadow B. image C. shoes D. footprints

5.A. up B. inside C. home D. there

6.A. surroundings B. whispers C. heartbeat D. mind

7.A. see B. hear C. feel D. smell

8.A. chocolate B. drink C. bone D. snowball

9.A. roots B. branches C. trunks D. leaves

10.A. colourful B. shabby C. plain D. white

11.A. ice B. rain C. smoke D. light

12.A. finally B. cheerfully C. gradually D. unwillingly

13.A. melted B. impressed C. broke D. stopped

14.A. calm B. alive C. warm D. awake

15.A. raised B. felt C. dropped D. pressed

16.A. soup B. liquid C. meal D. cup

17.A. flowing B. walking C. jumping D. squeezing

18.A. damaged B. abandoned C. frozen D. worn

19.A. either B. sometimes C. no less D. no longer

20.A. surprised B. contented C. determined D. warm-hearted

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年江西上饒廣豐縣一中高二上學(xué)期期末英語試卷（解析版） 題型：閱讀理解

Celebrating her first day as an adult on July, 12,2015, 18-year-old Nobel Peace Prize- winner Malala Yousafzai did the gift- giving---a girls’ school for Syrian refugees( 敘利亞難民) in Lebanon.

“ I call on leaders of all the countries all around the world that we must invest in books instead of bullets,” Malala Yousafzai said in a speech “ on behalf of the world’s children.” She made it an international conference. When she was 15 in the year 2012, Malala yousafzai was shot on school bus on her way home after school and seriously wounded by some gunmen of the Pakistani Taliban for advocating girls’ education. After recovering ,she continued her advocacy, which led last year to her becoming the youngest Nobel winner ever.

Malala told Reuters that she chose to open the school in Lebanon’s Bekaa Valley “ because I believe that the voices of the Syrian refugees need to be heard, and they have been ignored for so long. We must help them to get education. It is my responsibility to set up some schools for children there.”

More than a quarter of the estimated 4 million on Syrians who have fled the country’s civil war are gathering in Lebanon, including about 500,000 school-age children. They have no opportunities to go to school.

Malala Yousafzai set up Malala Fund shortly after she won the Nobel Peace Prize. Since then she has done a lot of work to raise money for the education of poor children all around the world. The school, near the Syrian border, can hold up to 200 girls aged14 to 18. The school was paid for by Yousafzai’s non-profit Malala Fund. On that day, all the students in the school shared the birthday cake and sang songs, bringing the Nobel winner to tears.

1.What do you know about Malala Yousafzai?

A. She is a middle school student.

B. She is a teacher in Lebanon.

C. She makes gifts for Syrian refugees.

D. She is a Nobel Prize winner.

2.What happened to Malala when she was 15?

A.She was shot by some gunmen.

B. She suffered from a terrible disease.

C. She made a speech in an international conference.

D. She set up her first school for girls.

3.What did Malala choose to do after she won the Nobel Peace Prize?

A. To fight in the civil war in Syria.

B. To protect Syrian refugees.

C. To open some schools for Syrian children

D. To teacher Syrian children in a school.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年河北棗強(qiáng)中學(xué)高一上學(xué)期期中考試英語試卷（解析版） 題型：閱讀理解

Liu Huan is a professor at the University of International Business and Economics. He is also a noted musician and popular singer in the Chinese mainland.

Born on Aug. 26, 1963 in to a teacher’s family in Tianjin, Liu enrolled at the University of International Relations in Beijing in 1981, majoring in French literature. He was retained at the university as a faculty member(教職工)after graduation in 1985. He won two first prizes in Beijing’s first-ever university English and French singing contests in 1985. To help promote local education by teaching music, he lived in Shizuishan, a remote area in the Ningxia Hui Autonomous Region, in 1985~1986. He was appointed a professor at the University of International Business and Economics to teach the history of Western music in 1991, and has been working at the university for more than 20 years.

As a professor, Liu is invited every year to colleges and universities in Beijing to teach music courses. As a famous musician, when asked if his classes differ from other teachers’, Liu simply said, “Nothing different. While standing on the platform, I am just a teacher. Everything outside has nothing to do with me at that moment. ”

Since becoming a professional singer in 1985, Liu’s singing has been widely welcomed across the country. He won many national awards, including the Top 10 Film and TV Singers in the Country in 1988, in 1990 and in 1992. On Aug. 8, 2008, Liu sang a duet “You and Me” with Sarah Brightman at the opening ceremony of the Beijing Olympic Games, reaching the top of his singing career. In addition to singing, Liu Huan also creates original scores for film and TV. His works have been well received by both audiences and his peers in the industry.

Therefore, Liu is chosen to act as one of the four judges on “The Voice of China” , a surprisingly popular singing talent show which has been aired on Zhejiang Satellite TV since July 13, 2012. At the same time, his fellow judges are Na Ying, Yang Kun, and Harlem Yu. (322W)

1. What does the underlined word “noted” in the first paragraph mean?

A. Famous. B. Skilled. C. Gifted. D. Important.

2.Liu Huan used to live in Shizuishan, a remote area in the Ningxia Hui Autonomous Region to_____

A. learn about their customs and cultures

B. improve his ability of composing music by living in the village

C. help promote local education by teaching music

D. find some talented students in music

3. When he reached the top of his singing career, he was .

A. 45 B. 22 C. 28 D. 49

4.Which is NOT true of the description about his musical achievements?

A. He has won the Top 10 Film and TV Singers in the Country three times.

B. He succeeded in singing a duet “You and Me” with Sarah Brightman at the opening ceremony of the Beijing Olympic Games.

C. He creates many original scores for film and TV.

D. He is the only one who acts as a judge on “The Voice of China”.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年甘肅蘭州第一中學(xué)高二上期中英語試卷（解析版） 題型：書面表達(dá)

你是某中學(xué)的學(xué)生李華。請(qǐng)用英語給出版社的編輯寫一封信，表達(dá)你對(duì)現(xiàn)在使用的英語教材的看法，內(nèi)容主要包括：

優(yōu)點(diǎn)： 1.話題廣泛 2. 圖片豐富 3. 有助于提高學(xué)習(xí)興趣

建議： 適當(dāng)降低詞匯難度

注意：1.字?jǐn)?shù)100 左右；2. 可以適當(dāng)增加細(xì)節(jié)，使行文連貫 ；3.開頭已為你寫好，不計(jì)入總詞數(shù)。

Dear Editor,

As a student reader, I am writing to talk about the English textbooks published by your house.

Yours，

Li Hua

查看答案和解析>>

同步練習(xí)冊(cè)答案