5.Everywhere man is altering the balance of nature.He is facilitating the spread of plants and animals into new regions,sometimes deliberately,sometimes unconsciously.He is covering huge areas with new kinds of plants,or with houses,factories,slag-heaps and other products of his civilization.He exterminates some species on a large scale,but favors the multiplication of others.In brief,he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million.
Many of these changes which he has brought about have had unforeseen consequences.Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade,or that the provision of pot cacti for lonely settlers'wives would have led to Eastern Australian being overrun with forests of Prickly Pear?Who would have prophesied that the cutting down of forests on the Adriatic coasts,or in parts of Central Africa,could have reduced the land to a semi desert,with the very soil washed away from the bare rock?Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa,measles into Oceania,very possibly malaria into ancient Greece?
These are spectacular examples; but examples on a smaller scale are everywhere to be found.We make a nature sanctuary for rare birds,prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested.We see,owing to some little change brought about by civilization,the starling spread over the English country-side in hordes.We improve the yielding capacities of our cattle; and find that now they exhaust the pastures which sufficed for less exigent stock.

31.The following examples exceptD reflect man altering the balance of nature.
A.man is covering huge areas with new kinds of plants
B.man is facilitating the spread of animals into new regions.
C.man is killing some species on a large scale
D.man is getting to know the importance of keeping the balance of nature.
32.What had a piece of Canadian waterweed cause?B
A.Eastern Australian was overrun with forests.
B.Half the waterways of Britain blocked for a decade.
C.In parts of central Africa,the land reduced to a semi desert.
D.Disease-sleeping has been caused.
33.What have spread diseases?C
A.Disease-sleeping sickness.      B.Measles.
C.Improved communications.        D.Malaria.
34.We make a nature sanctuary for rare birds butA.
A.some common and hardy kind of bird multiplies
B.rare kinds multiply
C.a(chǎn)ll bird multiply
D.no bird multiply
35.The main idea of the passage isD.
A.that man is deliberately destroying the balance of nature
B.that man has foreseen the consequences of altering the balance old nature
C.that improved communications have changed history
D.that man is altering the balance of nature.

分析 本篇文章主要講的是人類正改變著自然界的平衡.

解答 31~35   DBCAD
31題答案是D.細節(jié)理解題.根據(jù)文章第一段,A、B、C都是三項人類改變生態(tài)平衡事例,D項敘述的是事實,但不屬于人類改變生態(tài)平衡事例.故選D.
32題答案是B.推理判斷題.根據(jù)Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade加拿大被扔掉的一塊伊樂藻會堵塞英國一半的水道長達10年.可知答案是B.
33題答案是C.細節(jié)理解題.根據(jù)Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa改進后的通信會通過傳播昏睡病到東非而改變世界,可知答案是C.
34題答案是A.細節(jié)理解題.根據(jù)We make a nature sanctuary for rare birds,prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested 我們?yōu)橄∮续B類提供避難所,但是常見的鳥類和哈代鳥極度繁殖.可知選A.
35題答案是D.主旨大意題.文章的主題是人類正改變著自然界的平衡.故選D.

點評 這是一篇環(huán)保類閱讀.題目涉及多道細節(jié)理解題,做題時需要結(jié)合原文和題目有針對性的找出相關(guān)語句進行仔細分析,結(jié)合選項選出正確答案;考查文章大意的題需要對文章大意有清晰的理解才能得出正確答案,切記胡亂猜測,一定要做到有理有據(jù).

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The biggest problem,however,is that the company keeps changing the rules.Early you could keep everything private.That was the greatthing about Facebook-You could create your own little private network.Last year,the company changed its privacy rules so that many things-your city,your photo,your friends'names-were set,by default (默認),to be shared with everyone on the Internet.
According to Facebook's vice-president Elliot Schrage,the company is simply making changes to improve its service,and if people don't share information,they have a"less satisfying experience".
Some critics(批評家) think this is more about Facebook looking to make more money.In original business model,which involved selling ads and putting them in the side of the pages totally,who wants to look at ads when they're online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington.In April,Senator Charles Schumer called on Facebook to change its privacy policy.He also urged(催促) the Federal Trade Commission to set guidelines for social networking sites."I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,"Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy,it's only the beginning,which is why I'm considering cancelling(取消)my account.Facebook is a handy site,but I'm upset by the idea that my information is in the hands of people I don't know.That's too high a price to pay.
28.What do we learn about Facebook from the first paragraph?D
A.It is a website that sends messages to users who want to get married
B.It earns money by putting on advertisements
C.It provides loads of personal information to its users
D.It makes money by selling its users'personal data
29.What does the author say about most Facebook users?D
A.They are unwilling to give up their personal information
B.They care very little about their personal information
C.They don't identify themselves when using the website
D.They don't know their personal data enriches Facebook
30.Why does Facebook make changes to its rules according to Elliot Schrage?B
A.To obey the Federal guidelines
B.To provide better service to its users
C.To improve its users'connection
D.To expand its business
31.Why does the author plan to cancel his Facebook account?A
A.He doesn't want his personal data badly used
B.He finds many of its users untrustworthy
C.He is dissatisfied with its present service
D.He is upset by its frequent rule changes.

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科目:高中英語 來源: 題型:填空題

15.Unluckily,all the people were buried alive,and the city was also buried alive.
Unluckily,all the people were buried alive,andsowas the city.

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