3.More than 200scientists have completed a two-year study to identify the most natural and undeveloped areas on Earth.Their findings are reported in a new book called Wilderness:Earth's Last Wild Places.The book describes 37wilderness areas around the world.Each has an area greater than 10,000square kilometers.The study considered only areas where at least 70% of all plants are native.
North and South America are home to the largest number of wilderness areas.There are 16such areas,from southern Argentina to Alaska and northern Canada.Africa has 8wilderness areas,including the thick forests and the grasslands.Australia and New Guinea (幾內(nèi)亞) share 6areas.Europe has 3areas and Asia has 2.The Arabian Desert and Antarctica also are considered wilderness areas.
The largest wilderness area is the Boreal Forest (北方森林).It extends for 16-million square kilometers south of the Arctic Circle.The Boreal Forest extends across Alaska,Canada,northern Europe and Russia.The smallest of the 37wilderness areas is the Sundarbans.It is the world's largest tidal mangrove forest (紅樹林).It covers 10,000square kilometers of land at the mouth of the Ganges River in India and Bangladesh (孟加拉國).
The study found that wilderness areas cover about 46% of the Earth's land surface.However,they are home to less than 2.5% of the world's population.Nineteen of the wilderness areas have only about one person for each square kilometer.Native people usually live in these areas.
Wilderness areas help to influence the world's weather systems and rainfall.They are also home to many plants and animals.Population growth and the spread of agriculture and mining operations threaten wilderness areas.But just 7% of all such areas have some form of official protection.

66.What does the author think of the wilderness areas around the world in the book?C
A.Primitive    B.Permanent    C.Precious    D.Perfect
67.The writer describes the wilderness areas to show that theyC.
A.a(chǎn)re worth the public support
B.can attract readers'attention
C.need to be stressed as resources
D.a(chǎn)re seen on every continent
68.According to the 4th paragraph,we can draw a conclusion that the 37wilderness areas areD.
A.deserted    B.crowded   C.uncontrolled   D.undeveloped
69.As the result of the effect on nature,the wilderness areas on Earth should beA.
A.thought more of by the governments.
B.explored as natural habitats very soon.
C.further made full use of at present.
D.discovered for their advantages of nature.
70.The purpose of writing this text is to tell usBof the wildness areas around the world.
A.the importance          B.the situation
C.the development         D.the environment.

分析 本文旨在介紹荒野之地的基本分布及其意義.

解答 CCDAB
66.C 推理判斷題.根據(jù)最后兩段所介紹的"wilderness areas"的作用人類居住、動植物的家園、影響氣候與降雨可推斷作者認為"wilderness areas"是珍貴的,故選 C.
67.C 推理判斷題.全文介紹完了荒野之地在世界上的大致分布情況之后,指出它們是動植物的家園,也影響氣候與降雨,由此可判斷作者認為它們應(yīng)該被作為一種資源去重視,從而得到保護,故選 C.
68.D 推理判斷題.根據(jù)第四段 Nineteen of the wilderness areas have only about one person for each square kilometer.可判斷選 D.
69.A 推理判斷題.根據(jù)最后一段 Population growth and the spread of agriculture and mining operations threaten wilderness areas.But just 7 of all such areas have some form of official protection.可判斷選 A.
70.B 主旨大意題.全文重點介紹"wilderness areas"在世界上的主要分布情況,由此判斷選 B.

點評 本文旨在介紹荒野之地的基本分布及其意義.本文主要還是考查了細節(jié)題和推理題,注重綜合語言能力的運用,需要根據(jù)段落大意,結(jié)合語境,做出準確的判斷.要求考生在仔細閱讀文本的基礎(chǔ)上,仔細審題和每個選項,做適當?shù)难由,做出合理的判斷推理?/p>

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