Question

12．阅读下面短文，并做后面的题目，从各题所给的A、B、C 3个选项中选出能回答所提问题或完成所给句子的最佳答案．
    The earth is our home．We must take care of it．Life today is easier but there are some new problems．One of the biggest problems is pollution．Pollution comes in many forms．It is beginning to harm our health and even our life．
    Many years ago，the problem was not so serious because there weren't so many people．In other words，the more people，the more pollution．Now man is slowly polluting the whole world．
    Air pollution is still the most serious．It's not good for living things in the world．
    Many countries don't let people burn anything bad for air in houses and factories in the city．SO2 is now the most dangerous pollution．It's partly caused by heavy traffic．People say it's best to ride a bicycles are expensive or people are tired．It's because cars are more convenient（方便的），so more people go to work by car，and then the situation is getting worse and worse．We should make it so difficult and expensive for drivers to drive their cars into the city．They will go back to use their bicycles．

46．From the passage，life today is easier but there are some new problems，one of the biggest problems isB．
A．food               
B．pollution           
C．traffic                  
47．Many years ago，the problem was not soAbecause there weren't so many people．
A．serious            
B．light                
C．simple
48．What kind of pollution is still the most serious？C
A．Noise              
B．Water              
C．Air
49．Why don't most people go to work by bicycle？B
A．Because bicycles are expensive．
B．Because cars are more convenient．
C．Because people are tired．
50．From the passage，what do you think is the best way to go to work in the future？C
A．Taking a car．
B．Taking a bus         
C．Riding a bike．

Answer 1

分析 短文大意：现在的生活比数百年前是更容易了，但它也带来了一些新的问题．最大的问题之一是空气污染．告知人们为了人类，为了后代，我们必须要保护我们的家园--地球．

解答 46-50：BACBC
46题答案：B 考查细节理解题，根据文中的第一段One of the biggest problems is pollution可知其中一个最大的问题是污染，故答案B
47题答案：A 考查细节理解题，根据文中的第二段 Many years ago，the problem was not so serious because there weren't so many people可知许多年前，问题并不严重，因为没有那么多人，故答案A
48题答案：C 考查细节理解题，根据文中的第三段Air pollution is still the most serious．可知空气污染仍然是最严重的，故答案C
49题答案：B 考查细节理解题，根据文中的第四段It's because cars are more convenient可知这是因为汽车更方便，故答案B
50题答案：C 考查细节理解题，根据文中的第四段We should make it so difficult and expensive for drivers to drive their cars into the city．They will go back to use their bicycles．我们还应该把私家车进入城市的费用提的特别高，这样私家车进入城市就变得特别困难，他们就又该改成骑自行车了，可知将来应该骑自行车，故答案C

点评 题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．