31. This view is now being questioned by more and more people.
这一观点正受到越来越多人的质疑。
32. Although many people claim that, along with the rapidly economic development, the number of people who use bicycle are decreasing and bicycle is bound to die out. The information I've collected over the recent years leads me to believe that bicycle will continue to play extremely important roles in modern society.
33. Environmental experts point out that increasing pollution not only causes serious problems such as global warming but also could threaten to end human life on our planet.
36. Despite many obvious advantages of bicycle, it is not without its problem.
尽管自行车有许多明显的优点,但是它也存在它的问题。
37. Bicycle can't be compared with other means of transportation like car and train for speed and comfort.
在速度和舒适度方面,自行车是无法和汽车、火车这样的交通工具相比的。
38. From what has been discussed above, we may safely draw the conclusion that advantages of bicycle far outweigh its disadvantages and it will still play essential roles in modern society.
通过以上讨论,我们可以得出结论:自行车的优点远大于缺点,并且在现代社会它仍将发挥重要作用。
39. There is a general discussion these days over education in many colleges and institutes. One of the questions under debate is whether education is a lifetime study.