20．There has been a large increase in the number of natural disasters over the past few years，and it is believed that global warming and climate change could cause even more disasters in the future．Some of the world's leading cities are facing disasters like floods and heat waves．
London
London's flood defenses are getting older．Since 1982，the Thames Barrier（水閘）has protected the city from the threat （威脅）of flooding，but it was only designed to last until 2030and close once every two or three years．About 31years later the barrier now closes five or six times a year and according to Environment Agency predictions，by 2050the barrier will be closed on almost every tide if the problem is not solved
There are 26underground stations，400schools，16hospitals，an airport and 80billion worth of property（財(cái)產(chǎn)）in London's flood risk area，so large scale flooding would be disastrous．
Paris
Over a six week period in July and August 2003，more than 11，400-mainly elderly people-died in France from dehydration（脫水）and extremely high body temperature in a deadly heat wave．Heat waves of similar intensity（強(qiáng)度）are expected every seven years by 2050，so what can be done to make sure such a disaster does not happen again？
One solution is to have air-conditioners installed（安裝）in elderly care homes．But this is considered a short-term solution，as the increase in demand for electricity also increases carbon emissions（排放）．
In Paris the local authorities are encouraging architects to design new types of buildings such as the building"Flower Tower，"which uses a covering of bamboo to act as a natural air-conditioner．
Shanghai
Shanghai is the fastest growing city on Earth．It has a population of 18million and is only 4meters above sea level．Sea levels are predicted to rise by 20cm within the next century．
About 250，000people move to Shanghai every year in search of work，placing extra demands on energy consumption（消耗）．China depends heavily on coal-fired power stations，but these emissions increase temperatures and，in turn，warmer seas increase the risk of typhoons．
32．What problem should be settled now in London？A
A．How to improve the function of the old flood defenses
B．Where to build its flood defenses
C．How to use the Thames Barrier to protect the city
D．How to protect the city's property
33．Which of the following measures can't solve the heat wave disaster in Paris？C
A．Putting up new types of buildings with a covering of bamboo．
B．Having air-conditioners installed in elderly care homes．
C．Forbidding the city to build"Flower Tower"．
D．Encouraging architects to design new types of buildings．
34．The major threats caused in Shanghai areD．
A．increasing population and coal-fired power stations
B．extra demands on energy consumption and coal-fired power stations
C．increasing population and rising sea levels
D．rising sea levels and typhoons
35．The purpose of the passage isB．
A．to tell us how to protect the big cities
B．to warn us of the increasing natural disasters in big cities
C．to explain what causes flood and heat waves
D．to give advice on how to defend natural disasters．
分析 在過(guò)去的幾年里，自然災(zāi)害發(fā)生的次數(shù)逐漸增加，人們普遍認(rèn)為全球變暖的氣候變化會(huì)造成更多的自然災(zāi)害．一些世界級(jí)的大城市都在面臨著洪水，熱浪等災(zāi)害．比如在上海，由于能源消耗所引起的海水溫度上升會(huì)使上海面臨著臺(tái)風(fēng)的危險(xiǎn)，而巴黎則受著高溫?zé)崂说挠绊懀?/p>
解答 32．A．推理判斷題．文章第二段but it was only designed to last until 2030 and close once every two or three years．…..by 2050 the barrier will be closed on almost every tide if the problem is not solved提到了倫敦防洪工事的老化，不能應(yīng)對(duì)新出現(xiàn)的情況，故選A．
33．C．細(xì)節(jié)理解題．根據(jù)文章第五段和第六段內(nèi)容可知作為解決巴黎熱浪災(zāi)害的方法，A、B、D選項(xiàng)內(nèi)容均有涉及，而C選項(xiàng)內(nèi)容文章沒(méi)有提到，故選C．
34．D．細(xì)節(jié)理解題．根據(jù)文章倒數(shù)一、二段內(nèi)容Shanghai is the fastest growing city on Earth．It has a population of 18million and is only 4meters above sea level．Sea levels are predicted to rise by 20cm within the next century．About 250，000people move to Shanghai every year in search of work，placing extra demands on energy consumption（消耗）．China depends heavily on coal-fired power stations，but these emissions increase temperatures and，in turn，warmer seas increase the risk of typhoons．可知，上海僅僅高于海平面4米，而在下個(gè)世紀(jì)海平面 要升高20厘米，而且能源消耗所導(dǎo)致的海水溫度的上升，也會(huì)帶來(lái)臺(tái)風(fēng)的危險(xiǎn)，故選D．
35．B．推理判斷題．作者在文章首段提到it is believed that global warming and climate change could cause even more disasters in thefuture．然后列舉了倫敦、巴黎和上海幾個(gè)大城市所面臨的潛在的自然災(zāi)害問(wèn)題，由此可知作者是想警告人們逐漸增加的自然災(zāi)害的危險(xiǎn)，故選B．
點(diǎn)評(píng) 考查學(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，再做出正確選擇．在做推理判斷題時(shí)不要以個(gè)人的主觀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．
