题目内容
7.Scientists studying populations of gray wolves in the USA's Yellowstone National Park have developed a way to predict how changes in the environment will affect the animals'number,body size and genetics,amongst other biological features.This study provides a powerful mathematical model to explore the connections between environmental change,changes in population size and recent rapid physical changes,such as the decrease in the number of animals like polar bears and Soay sheep.
This study provides a powerful mathematical mode to explore the connections between environmental change,changes in population size and recent rapid physical changes,such as the decrease in the number of animals like polar bears and Soay sheep.
"We know that climate change is having an effect o the lives of animal pieces around the world.This is clear through the changes we've seen in their population sizes,as well as their body sizes.However,what has not been so clear is what underlies these changes.This work provides a relatively easy way for biologists to investigate how,and why,environmental change influences both the ecology and near-term evolutionary future of species,"said Professor Tim Coulson,who led the study.
The scientists examined 15years of data about Yellowstone gray wolves'biological characteristics and demographics(人口统计数据)across a range of"good"years when wolves boomed,and"poorer"years when they did not.They were then able to investigate how the changing frequency of good and bad years influenced population size genetics,body size and the life history of Yellowstone wolves.
Their results showed that the wolf population was more greatly affected by consistent overall changes in the environment than it was by changes in the magnitude(量) of year-to-year fluctuation(波动).Professor Coulson continued:"We now have a way to predict with new detail how populations of many different animals will respond to environmental change,including those animals threatened with extinction.However,we simply don't have enough information about most of these species and their environments to confidently make such predictions.We urgently need more data if we are to understand how the natural world will be affected by continuing climate change."
32.Which of the following statement is TRUE according to the passage?C
A.Scientists'study provides a method to find out why polar bears becomes fewer.
B.Climate change alone leads to changes in the animals''population sizes and body sizes.
C.The study is based on data about Gray wolves in the Yellowstone National park.
D.The research will save those animals in danger of extinction.
33.The word"underlies"in paragraph three can be replaced byB.
A.prevents
B.causes
C.reflects
D.introduces
34.We can learn from the passage thatD.
A.the change in the environment will reduce the number of gray wolves.
B.scientists discovered how different animals responded to environmental change.
C.information about different species and their environments is very easy to collect.
D.scientists will continue their study on gray wolves to get more information.
35.Which can be the best title of the passage?B
A.The relationship between climate change and annals.
B.Wolves help predict climate effects on animals.
C.Fifteen year's hard work-a study about gray wolves.
D.Uncover the secrets of animates and their environments.
分析 本文主要讲述了科学家通过研究黄石公园的灰狼种群来预测气候以及气候对动物的影响,
解答 32.C 细节理解题.根据文章第一段"Scientists studying populations of gray wolves in the USA's Yellowstone National Park have developed a way to predict how changes in the environment will affect the animals'number,body size and genetics,amongst other biological features."研究美国黄石公园灰狼种群的科学家们已经开发出一种方法,可以预测环境的变化会如何影响动物的数量、体型和遗传学,以及其他生物学特征.故选C.
33.B 词义猜测题.根据文章内容However,what has not been so clear is what underlies these changes.然而,这些变化背后的原因还不是很清楚.该词在文章中的含义为原因,故选B.
34.D 细节理解题.根据文章内容we simply don't have enough information about most of these species and their environments to confidently make such predictions.我们只是没有足够的资料来了解这些物种和它们的环境.故C项不正确.以及They were then able to investigate how the changing frequency of good and bad years influenced population size genetics,body size and the life history of Yellowstone wolves.他们能够研究好的和坏的年变化频率如何影响种群大小的遗传学、体型和黄石狼的生活史.故选D.
35.B 主旨题.根据文章内容We urgently need more data if we are to understand how the natural world will be affected by continuing climate change.",主要讲述了科学家通过研究黄石公园的灰狼种群来预测气候以及气候对动物的影响,结合选项,故选B
点评 本文是一个科技类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.

A. | Regarding | B. | Without | C. | Despite | D. | Considering |
Using public toilets in China can often be a challenging undertaking,particularly for those not practiced in the art of sitting deep.(41)Cresearchers in China have come up with a new (42)Athat they say can help (43)Da poisonous problem bothering China's public toilets:the overpowering odor (恶臭).
Unlike chemical solutions,(44)Aare expensive and can (45)Cthe environment,the new biotreatment is being thought as a cost-effective way of protecting the environment to (46)B75percent of the bad smell in bathrooms,according to researchers from the Chinese Academy of Sciences.The (47)Bbehind the treatment lies in a special (48)Cof two types of bacteria---lactobacillius sp (乳杆菌类细菌) and streptococcus thermopiles (嗜热链球菌)---as well as the elements of oranges.The prepared mixture,which comes in liquid or powder form,feeds on human waste when applied,thus (49)A the growth of odor-making bacteria.However,not yet available in (50)Dthe odor-killing technology is still undergoing (51)C.Many experiments with the solution are being (52)A in the Huanglong Nature Preserve and Jiuzhaigou National Park.
We can see the technology is especially suited for use in the nonflushing (非冲水) toilets often found in these types of nature preserves,since water regulations in these areas are often very (53)Aand pipes are difficult to (54)D.Portable bathrooms,while (55)D,are relatively expensive to maintain compared with the biosolution.
This way (56)Bcan see that not only are your (57)Cnice,but the toilets and the other facilities at the site are pleasant as well and the technology has other (58)Cas well,such as the treatment of rubbish,said the administrator of Jiuzhaigou National Park.
If (59)Dto its effectiveness prove true,the technology is likely to be (60)A by the Chinese health authorities.
41.A.Because | B.If | C.But | D.While |
42.A.technology | B.way | C.machine | D.psychology |
43.A.confirm | B.analyze | C.find out | D.deal with |
44.A.which | B.they | C.that | D.those |
45.A.benefit | B.protect | C.harm | D.influence |
46.A.lead to | B.take in | C.keep out | D.make use of |
47.A.identity | B.science | C.instruction | D.procedure |
48.A.seed | B.poison | C.mixture | D.discovery |
49.A.preventing | B.keeping | C.causing | D.forbidding |
50.A.gardens | B.forests | C.homes | D.supermarkets |
51.A.discussing | B.using | C.testing | D.analyzing |
52.A.planned | B.simplified | C.classified | D.debated |
53.A.strict | B.harmonious | C.drafted | D.canceled |
54.A.polish | B.twist | C.make | D.fix |
55.A.optional | B.clean | C.superb | D.convenient |
56.A.lawyers | B.tourists | C.burglars | D.merchants |
57.A.goods | B.animals | C.mountains | D.guides |
58.A.phenomena | B.disadvantages | C.applications | D.characteristics |
59.A.results | B.guesses | C.doubts | D.claims |
60.A.accepted | B.refused | C.abandoned | D.banned |
A. | increasing | B. | to increase | ||
C. | having increased | D. | being increased |