Question

8．Scientists have long understood the key role that oceans play in regulating the Earth's climate．Oceans cover 70 percent of the globe and store a thousand times more heat than the atmosphere does．What's newer is the understanding of how this key component （成分） of our climate system responds to global warming．
         A brake （剎車） on global warming-for now
One of the ocean's most important climate functions is absorbing heat and carbon dioxide （CO₂），one of the gases that cause global warming．Acting as a heat sponge （海綿），the oceans have absorbed huge amounts of heat and CO₂ in the last forty years．
Fujita explains that"the oceans are saving us from faster climate change-they are a big flywheel that delays rapid overheating of the earth，putting a brake on the climate system．"
"That's the good news，"he adds．"The bad news is that the oceans only slow the atmospheric warming．Once the oceans come to balance with a greenhouse-gas warmed earth，the extreme heat will remain in the atmosphere and things will get much hotter．"But where and how the oceans release this accumulated （積累） heat is uncertain．And as the ocean stores heat，fragile underwater ecosystems are struggling．
The most recent scientific report from the Intergovernmental Panel on Climate Change （IPCC）also notes with concern that the ocean is acidifying （酸化） because of increased absorption of atmospheric CO₂，and thus causing a threat for shell-forming species．Sharp increases in carbon dioxide levels will cause further acidification of the ocean．
         Currents distributing heat
Another important role the oceans play is that of distributor．Oceans deliver heat and life-sustaining nutrients around the globe．Just as blood vessels bring oxygen and nutrients to cells in the human body，the ocean's currents carry oxygen，nutrients and heat throughout the Earth．The ocean distributes 25 to 50 percent of the energy the planet receives from the sun．For example，the Gulf Stream carries heat across the Atlantic．This warm current gives northwestern Europe a milder climate than it would normally have so far north．A change to the ocean's circulation （循環(huán)） patterns could throw Europe into a colder period，even as the rest of world experiences warmer temperatures．
53．We can infer from the passage thatD．
A．the oceans cause global warming            
B．the oceans stop global warming
C．the oceans release nutrients and heat        
D．the ocean ecosystems face more dangers
54．From the passage we can learn that the ocean's currentsC．
A．produce oxygen and nutrients everywhere    
B．a(chǎn)bsorb 25-50% of the energy from the sun
C．distribute heat and nutrients around        
D．change the ocean's circulation patterns
55．Which of the following is NOT the result of the ocean absorbing heat and carbon dioxide？A
A．It makes the atmosphere hotter．          
B．It affects shell-forming species．
C．It causes further acidification．             
D．It regulates the Earth's climate．
56．This passage mainly talks aboutA．
A．the roles of oceans
B．global warming   
C．ocean currents                   
D．carbon dioxide．

Answer 1

分析 文章講述了海洋中調(diào)節(jié)地球氣候方面所起的作用．海洋可以吸收熱量和二氧化碳，可有效調(diào)節(jié)地球氣候，延緩全球變暖．水流還可以充當(dāng)?shù)厍蛏�熱器的功能，還可向全球的事物輸送營養(yǎng)物質(zhì)．因此，保護海洋刻不容緩．

解答 答案：53．D 推理判斷題．文章第四段說The most recent scientific report from the Intergovernmental Panel on Climate Change （IPCC）also notes with concern that the ocean is acidifying （酸化） because of increased absorption of atmospheric CO₂，and thus causing a threat for shell-forming species．Sharp increases in carbon dioxide levels will cause further acidification of the ocean因為吸收了空氣中太多的二氧化碳，海洋正在酸化，造成了對地球保護殼的威脅．故選D．
54．C 推理判斷題．文章最后一段說Another important role the oceans play is that of distributor．Oceans deliver heat and life-sustaining nutrients around the globe．Just as blood vessels bring oxygen and nutrients to cells in the human body海洋就像人體的血管一樣，給全球輸送熱量和維持生命的營養(yǎng)物質(zhì)．故選C．
55．A 細(xì)節(jié)判斷題．選項中BCD是文章講述的內(nèi)容，只有A項讓大氣層變熱，與文章講述的內(nèi)容相反，是錯誤的．故選A．
56．A 主旨大意題．文章一開始就說Scientists have long understood the key role that oceans play in regulating the Earth's climate長久以來科學(xué)家們都知道海洋在調(diào)節(jié)地球氣候中發(fā)揮關(guān)鍵作用．故選A．

點評 閱讀理解是考查語篇理解能力．�？嫉念}型有：推理判斷題；主旨大意題；細(xì)節(jié)理解題；猜測詞意題．近幾年又出現(xiàn)了兩種新的考查方式：寫作態(tài)度判斷題和文章結(jié)構(gòu)題．解題時，在讀懂文章的基礎(chǔ)上，還有特別注意掌握題型的特征，尤其是細(xì)節(jié)題和推斷題不可混淆：細(xì)節(jié)題是文章信息的再現(xiàn)；推斷題是文章信息的提取．本題是廣告類文章，考查主要是以細(xì)節(jié)題為主，細(xì)節(jié)題要注意常用的出題陷阱有：夸大，縮小，張冠李戴，偷梁換柱，無中生有等，做題時要看清看準(zhǔn)．