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(肠胃气胀)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 (烟囱) 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 (分离) 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 (有争议的), 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 (放养的) animal,” said Peter Amp of the University of New South Wales's institute of environmental studies.

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

2.Athol Kleve seems to believe that ________.

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

3.What do the underlined words “the idea” in para­graph 9 refer to?

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.

4.Which of the statements is the advantage Peter Amp lists about kangaroo?

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

   
SPIRIT LAKE, Iowa -- Towering more than 12 stories above a school playground, a pair of wind turbines(涡轮机) transform the usts blowing over the lakes and ridges sur-rounding this northern Iowa town into power that provides about half of the school district' s electrical needs.

     Students here can "look right out the back door" to see the giant turbines capture the wind and learn how they can produce power. More than 80 schools across the USA have installed some type of wind turbine, says Ian Baring - Could, senior engineer in a wind technology center at the National Renewable Energy Laboratory in Golden, Colo.

      Now, a program called Wind for Schools is aiming to bring smaller turbines to six states:Colorado, Idaho, Kansas, Montana, Nebraska and South Dakota. The program, sponsored by the U.S. Department of Energy' s Wind Powering America program at the National Renewable Energy Laboratory, is the first program to use smaller turbines with a mission of educating students and the cmmnunity about wind power.

      In Faith, S. D. , home to one of the schools hoping to build a small wind turbine in the next couple of years, a fierce wind blows across the plains most days. Angela King, who teaches science in grades 7 to 12 in Faith, believes a turbine wiI1 give students learning about wind energy the chance to "see it happening, rather than just reading it in a book. "

      Much of the first year of the three - year program has been spent identifying schools hoping to join the program. South Dakota, for instance, announced its eight school districts over the summer. About five schools in Kansas have the turbines, and schools in Montana, Idaho and South Dakota are now preparing sites and will have them installed during this school year.Now, the goal is to add wind turbines at about five schools per year in each state, for a total of about 30 per year overall, Baring - Gould says.

61. According to the first paragraph, we know wind turbines are installed __  

      A. to produce wind                              B. to generate electricity

      C. for students to play with                   D. to attract visitors

62. What' s the real purpose of the program?   

      A. To sell smaller wind turbines to six states.

      B. To warn the school of the danger from wind.

      C. To teach the students to learn about wind power.

      D. To encourage the students to operate wind turbines.

63. According to Angela King, __  

     A. it is better to learn from one' s experience

     B. it is a waste of money to install wind turbines

     C. students should not learn from reading books

     D. students should be given the chance to play

64. We can conclude from the passage __  

     A. the program will last five years altogether

     B. more and more schools will resist the program

     C. some schools are forced to install wind turbines

     D. more and more schools will join the program

65. This passage talks about the program in order to tell us __  

     A. watching turbines can make students clever

     B. watching turbines at school can help build bodies

     C. programs like this can help schools educate students

     D. installing wind turbines can improve our environment

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(肠胃气胀)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 (烟囱) 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 (分离) 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 (有争议的), 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 (放养的) animal,” said Peter Amp of the University of New South Wales's institute of environmental studies

1. 1.

   Scientists intend to put bacteria into cattle and sheep _________

   1. A.
      so that they can make full use of special bacteria
   2. B.
      to help Australian farmers to earn more money
   3. C.
      so that they can protect Australian ecosystem
   4. D.
      to prevent them from sending out harmful gases
2. 2.

   Athol Kleve seems to believe that ________

   1. A.
      cattle and sheep produce more carbon dioxide
   2. B.
      less cattle and sheep are raised in New Zealand
   3. C.
      farm animals are responsible for greenhouse gases
   4. D.
      New Zealand has the most animals in the world
3. 3.

   What do the underlined words “the idea” in para­graph 9 refer to?

   1. A.
      Australians should farm fewer cattle and sheep and just eat more kangaroos
   2. B.
      The bacteria could make the digestive process much more efficient
   3. C.
      Australians should give kangaroo - style stomachs to cattle and sheep
   4. D.
      The bacteria could save millions of dollars in feed costs for farmers
4. 4.

   Which of the statements is the advantage Peter Amp lists about kangaroo?

   1. A.
      it is rich in protein
   2. B.
      it is cheaper than beef
   3. C.
      it is high in fat
   4. D.
      it is more delicious than sheep

       A New Store With Greens Like Emeralds (祖母绿)At his new Paradise Market, Jason Lowe displays fruit, bunches of herbs and frilly greens as a jeweler would decorates. The store, at a 1614 Beacon Street, is more than twice the size of his original one on Delaney Boulevard, which he closed more than a year ago when the rent went up. But his merchandising has not changed. “I do not wash my lettuces, or clean them the way others do,” he said. “They will last longer and stay fresher at home this way, and keep their nutrients. And I never put anything out on the street to dry in the sun.”

       His berries are placed in an open case with a cooling unit. He has added fresh breads, cheeses, imported butters, top – of –the – line oils, gourmet pastas and Del Sur ice cream. As for a salad bar, he does not believe in them. He has a small kitchen to make soups and sandwiches to go. And business goes well. “I have three times as many customers as I had on Delaney Boulevard,” Lowe said. “And my only aim is to keep them all happy.”

1．What is the name of Jason Lowe’s store?

       A．Lowe’s Grocery.                                 B．Paradise Market.

       C．1614 Beacon Street.                             D．Delaney Boulevard. 

2．Why did Lowe close his original store?

       A．Business was slow.

       B．His rent was raised.

       C．It was not large enough.

       D．He wanted to move to a busier neighborhood.

3．What does Lowe say about his store’s lettuce?

       A．It is not kept wet.                                B．It is from nearby farms.

       C．It is grown organically.                         D．It is the cheapest in the city.

4．What does Lowe’s NOT have?

       A．A salad bar.                                         B．Fresh soups.

       C．Gourmet foods.                                       D．A selection of sandwiches.