Question

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（街头小贩） 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．

Answer 1

分析 本文介绍了 Jiang Nan 使用布袋子以保护环境的例子，接着作者开始讨论塑料袋禁令，但是仍有很多人坚持使用塑料袋．作者主要向读者说明，虽然有塑料袋禁令，但是许多人仍在使用塑料袋，因此完全禁用塑料袋还需要努力．

解答 49．A  推断题．文章第一段介绍了 Jiang Nan 使用布袋子以保护环境的例子，接着作者开始讨论塑料袋禁令，由此推知 Jiang Nan 的例子是用来引出话题的，故正确答案为A．
50．C  细节题．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费发的，故正确答案为C．
51．A 细节题．此题用排除法．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项，由第六段最后一句"and I don't mind paying a couple more jiao"可排除C项，由第五段第三句"Street vendors（街头小贩） worry that they are likely to lose customers if they charge them for plastic bags"可排除D项．全文没有提及布袋子难以得到或很重，因此不是人们使用塑料袋的原因，故正确答案为A．
52．C．主旨题．文章第一段由 Jiang Nan 的例子引出对使用塑料袋的讨论，第二、三、四段介绍了塑料袋禁令等保护环境的措施，第五、六、七段写仍有很多人坚持使用塑料袋．作者主要向读者说明，虽然有塑料袋禁令，但是许多人仍在使用塑料袋，因此完全禁用塑料袋还需要努力．C项符合文意，故正确答案为C．

点评 做阅读时经常犯错的主要原因是，仅凭读过文章后残留在脑海中的一丝印象来勾选答案，这样便很容易掉入出题人故意设布下的题目陷阱．所谓阅读理解，对于题目的理解一定要忠实于原文，因此，每一道题都应该与原文作全面的对比与核查，再得出答案．也就是说，阅读理解的每一道题目，在原文都应该有明确的出处，我们把这一出处叫做原文相关句，（1）排除与原文相关句主题不一致的选项（2）排除与原文相关句态度相反的选项  （3）排除用于过于极端或负面的选项（4）注意结合文章主旨和主题去排除．