6．Jiang Nan，a full-time mother in Beijing，keeps a dozen or so cloth bags at home，carefully selecting one or two before heading out to get groceries．"Most of them were giveaways from advertising marketing campaigns，but others had been handed out in the street by various environmental protection organizations，"she explained．
Since June 2008 China has forbidden the production，sale and usage of plastic bags thinner than 0.025 millimeter （毫米），and retailers（零售商） are not allowed to provide free plastic bags to their customers，regardless of the thickness．
Many Chinese consumers like Jiang have learned to refuse plastic bags whenever possible in their shopping．"A plastic bag may only cost a few jiao，but it's more about how bad they are for the environment，"Jiang said．
The plastic ban is for the most part well carried out in big cities，and has been distinctly effective in reducing white waste．On the first anniversary of the plastic ban Global Village of Beijing，an NGO environmental organization，shows that during the year of the ban the consumption of plastic bags fell by about 40 billion pieces in chain supermarkets alone，saving more than 1.2 million tons of petroleum．
However，enforcement shows considerably less muscle in smaller cities，towns and country-side．In a remote town like Lichuan，the awareness of environmental protection is not as strong as that in big cities．Street vendors（街頭小販） worry that they are likely to lose customers if they charge them for plastic bags．Seeing no significance in the issue，local government often turn a blind eye to banned bag traffic in the market．
There are still those who don't have an interest in living green．Cui Lin，another Beijinger，often forgets to bring a cloth bag when shopping，and has to buy plastic bags．"Anyway I think plastic bags are neater and cleaner，and I don't mind paying a couple more jiao，"he shrugged．
Mrs Yu，a vegetable vendor in Lichuan County，Jiangxi Province，recalled that before plastic bags became popular in the early 1990s，Chinese people always carried a bamboo basket when they visited the market．"Plastic bags are more convenient，"she comments，and her view might be that of the tens of millions of people in the nation who still cling to plastic bags，paid or free．This is suggested by her trade where piles of plastic bags are still passed out every day．
49．In Paragraph 1，the writer uses Jiang Nan's case toA．
A．introduce a topic
B．tell a story
C．describe a person
D．offer an argument
50．How did Jiang Nan get her cloth bags？C
A．She bought them at a low price．
C．She borrowed them from her relatives．
B．She got them for free．
D．She made them herself．
51．Which is NOT the reason why some people still use plastic bags when shopping？A
A．Cloth bags are difficult to get and heavy to carry．
B．People's awareness of environmental protection is not strong enough．
C．People don't mind paying a couple more jiao for plastic bags．
D．Street vendors worry that they are likely to lose customers if they charge them．
52．What message does the writer mostly convey in the passage？C
A．To reduce white waste is urgent．
B．The plastic bag ban has achieved great success．
C．There is still a long way to go for the plastic bag ban．
D．People's awareness of environmental protection should be stressed．
分析 本文介紹了 Jiang Nan 使用布袋子以保護(hù)環(huán)境的例子，接著作者開始討論塑料袋禁令，但是仍有很多人堅(jiān)持使用塑料袋．作者主要向讀者說明，雖然有塑料袋禁令，但是許多人仍在使用塑料袋，因此完全禁用塑料袋還需要努力．
解答 49．A 推斷題．文章第一段介紹了 Jiang Nan 使用布袋子以保護(hù)環(huán)境的例子，接著作者開始討論塑料袋禁令，由此推知 Jiang Nan 的例子是用來引出話題的，故正確答案為A．
50．C 細(xì)節(jié)題．由第一段最后一句"Most of them were giveaways from advertising marketing campaigns，but others had been handed out in the street by various environmental protection organizations．"可知 Jiang Nan 的布袋子大多是街上免費(fèi)發(fā)的，故正確答案為C．
51．A 細(xì)節(jié)題．此題用排除法．由第五段第二句"In a remote town like Lichuan，the awareness of environmental protection is not as strong as that in big cities．"可排除B項(xiàng)，由第六段最后一句"and I don't mind paying a couple more jiao"可排除C項(xiàng)，由第五段第三句"Street vendors（街頭小販） worry that they are likely to lose customers if they charge them for plastic bags"可排除D項(xiàng)．全文沒有提及布袋子難以得到或很重，因此不是人們使用塑料袋的原因，故正確答案為A．
52．C．主旨題．文章第一段由 Jiang Nan 的例子引出對(duì)使用塑料袋的討論，第二、三、四段介紹了塑料袋禁令等保護(hù)環(huán)境的措施，第五、六、七段寫仍有很多人堅(jiān)持使用塑料袋．作者主要向讀者說明，雖然有塑料袋禁令，但是許多人仍在使用塑料袋，因此完全禁用塑料袋還需要努力．C項(xiàng)符合文意，故正確答案為C．
點(diǎn)評(píng) 做閱讀時(shí)經(jīng)常犯錯(cuò)的主要原因是，僅憑讀過文章后殘留在腦海中的一絲印象來勾選答案，這樣便很容易掉入出題人故意設(shè)布下的題目陷阱．所謂閱讀理解，對(duì)于題目的理解一定要忠實(shí)于原文，因此，每一道題都應(yīng)該與原文作全面的對(duì)比與核查，再得出答案．也就是說，閱讀理解的每一道題目，在原文都應(yīng)該有明確的出處，我們把這一出處叫做原文相關(guān)句，（1）排除與原文相關(guān)句主題不一致的選項(xiàng)（2）排除與原文相關(guān)句態(tài)度相反的選項(xiàng) （3）排除用于過于極端或負(fù)面的選項(xiàng)（4）注意結(jié)合文章主旨和主題去排除．
