Question

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（腸胃氣脹）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（放養(yǎng)的）animal，”said Peter Ampt of the University of New South Wales’s institute of environmental studies．
【小題1】The passage mainly talks about ________.

A．a(chǎn) better way to prevent air pollution

B．the danger of methane from farm animals

C．possible solutions to protecting environment

D．a(chǎn) recent research on global warming

【小題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

【小題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

【小題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

Answer 1

【小題1】D
【小題2】A
【小題3】B
【小題4】B

解析試題分析：文章主要是介紹了一項最近關(guān)于溫室氣體排放的研究。為了減少導致全球變暖的溫室氣體的排放，澳大利亞科學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菌能使其放的屁中不含有甲烷�？茖W家想將這種細菌移至牛羊的胃中，以抑制它們所排放的大量有害氣體。另一組科學家建議澳大利亞人應少養(yǎng)牛羊，多吃袋鼠肉。
【小題1】主旨題：從第一段的內(nèi)容和全篇文章可知文章主要是介紹了一項最近關(guān)于溫室氣體排放的研究。選D。
【小題2】考查推理判斷。從文章第一﹑二自然段“為了減少導致全球變暖的溫室氣體的排放，澳大利亞科學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菌能使其放的屁中不含有甲烷。科學家想將這種細菌移至牛羊的胃中，以抑制它們所排放的大量有害氣體。”可推斷得知A。
【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.可知另一組科學家建議澳大利亞人應少養(yǎng)牛羊，多吃袋鼠肉。這里的另外一種想法就是這個，選B。
【小題4】考查細節(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認為,溫室氣體越來越多主要是因為農(nóng)場的動物造成的。選B
考點：考查科普類短文