题目

题型：不详难度：来源：

Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut the greenhouse gases they send out，which is thought to be responsible for global warming．
Thanks to special bacteria in the stomachs，kangaroo flatulence（肠胃气胀）contains no methane（甲烷）and scientists want to transfer that bacteria to cattle and sheep which produce large quantities of the harmful gas．
While the usual image of greenhouse gas pollution is a huge factory chimney pushing out carbon dioxide，farm animals’ passing wind contributes to a surprisingly high percentage of total emission（排放物）in some countries．
“Fourteen percent of emissions from all sources in Australia is from methane from cattle and sheep，’’said Athol Klieve，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 are 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 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．And about twenty 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 Ampt of the University of New South Wales’s institute of environmental studies．
小题1:The passage mainly talks about ________.

A．a better way to prevent air pollution

B．the danger of methane from farm animals

C．possible solutions to protecting environment

D．a recent research on global warming

小题2: Scientists intend to put the bacteria into cattle and sheep in order to ________.

A．prevent them from sending out harmful gases

B．promote Australian farming

C．protect Australian ecosystem

D．make the most of the special bacteria

小题3:Another possible solution to the problem is ________.

A．to reduce the number of animals raised on farms

B．to eat more kangaroos rather than keep more sheep and cattle

C．to eat more plants rather than beef and mutton

D．to grow more trees to absorb carbon dioxide

小题4:From the passage we learn that ________.

A．it is easy to transfer the bacteria to cattle and sheep

B．farm animals are to blame for global warming in some countries

C．cattle and sheep produce more methane than kangaroos

D．less cattle and sheep are raised in New Zealand

答案

小题1:D
小题2:A
小题3:B
小题4:B

解析

试题分析：文章主要是介绍了一项最近关于温室气体排放的研究。为了减少导致全球变暖的温室气体的排放，澳大利亚科学家目前正在想办法将牛羊胃变成袋鼠式的胃。袋鼠胃中有一种特殊的细菌能使其放的屁中不含有甲烷。科学家想将这种细菌移至牛羊的胃中，以抑制它们所排放的大量有害气体。另一组科学家建议澳大利亚人应少养牛羊，多吃袋鼠肉。
小题1:主旨题：从第一段的内容和全篇文章可知文章主要是介绍了一项最近关于温室气体排放的研究。选D。
小题2:考查推理判断。从文章第一﹑二自然段“为了减少导致全球变暖的温室气体的排放，澳大利亚科学家目前正在想办法将牛羊胃变成袋鼠式的胃。袋鼠胃中有一种特殊的细菌能使其放的屁中不含有甲烷。科学家想将这种细菌移至牛羊的胃中，以抑制它们所排放的大量有害气体。”可推断得知A。
小题3:猜词题：从上面第八段的内容：Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos.可知另一组科学家建议澳大利亚人应少养牛羊，多吃袋鼠肉。这里的另外一种想法就是这个，选B。
小题4:考查细节理解。从第四段的句子：“Fourteen percent of emissions from all sources in Australia is from enteric(肠的) methane from cattle and sheep,” said Athol Klieve, 可知Athol Klieve认为,温室气体越来越多主要是因为农场的动物造成的。选B