9.Do you know anything about Alaskan black bears?They hibernate for up to seven months a year,during which time they do not eat or drink,before waking up in virtually the same physical state they fell asleep in.
Now experts hope to develop methods of putting humans into a similar state which could help astronauts survive long missions and lead to new ways of treating severely ill patients.
While many studies have examined hibernation in mice and hedgehogs,little research has been done into the same condition in larger mammals such as bears.
But new research conducted at the Institute of Arctic Biology at the University of Alaska monitored the animals'body temperature,heart rate and muscle movements while they slept.
The research results showed that during a five-month hibernation the bears'body temeratures varied between 30℃and 36℃in cycles that lasted between two and seven
days-a pattern that was previously unknown in hibernating animals.
The research project leader said,"If our research could help by showing how to reduce metabolic(新陳代謝的)rates and oxygen demands in human tissues,one could possibly save severely ill patients.We simply need to know how to turn things on and off to take advantage of the different levels of hibernation."
Craig Heller,of Stanford University,who contributed to the study,added:"There has always been a thought that,if there is ever long-distance space travel,it would be good to be able to put people into a state of lower metabolism or a state of hibernation.That's almost science fiction but you can see the logical basis."
33.We know from the text thatD.
A.Craig Heller is a leader from the Institute of Arctic Biology
B.researchers have examined hibernation in humans
C.experts have got no results from their research
D.during winter Alaskan black bears sleep for more than half a year
34.The best title of the text should beA.
A.Astronauts Could Hibernate Like Bears
B.New Methods of Putting Humans into Hibernation
C.Alaskan Black Bears Hibernate
D.The Latest Research Results
35.According to the text,we can infer thatB.
A.many studies have examined hibernation in mice and bears as well
B.research into hibernation in animals may help deadly patients stay longer
C.humans'body temperatures vary between 30℃and 36℃while they sleep
D.scientists have already take advantage of the different levels of hibernation in space missions.

分析 本文屬于說(shuō)明文閱讀,作者通過(guò)這篇文章主要向我們描述了研究人員正在研究方法使人像動(dòng)物一樣冬眠,這可以挽救更多患者的生命,也可以幫助太空事業(yè)的發(fā)展.

解答 33.D.細(xì)節(jié)理解題.根據(jù)第一段They hibernate for up to seven months a year,during which time they do not eat or drink,before waking up in virtually the same physical state they fell asleep in可知阿拉斯加黑熊冬眠半年以上;故選D.
34.A.推理判斷題.根據(jù)最后一段There has always been a thought that,if there is ever long-distance space travel,it would be good to be able to put people into a state of lower metabolism or a state of hibernation可知課文最好的標(biāo)題應(yīng)該是宇航員可以像熊一樣冬眠;故選A.
35.B.細(xì)節(jié)理解題.根據(jù)倒數(shù)第二段If our research could help by showing how to reduce metabolic(新陳代謝的)rates and oxygen demands in human tissues,one could possibly save severely ill patients可知像動(dòng)物一樣冬眠可能會(huì)幫助重癥患者活的更久;故選B.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀(guān)想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

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