我同意後者，有如下理由：
30. before giving my opinion, i think it is important to look at the arguments on both sides.
在給出我的觀點之前，我想看看雙方的觀點是重要的。
31. this view is now being questioned by more and more people.
這一觀點正受到越來越多人的質疑。
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.
儘管許多人認為隨著經濟的高速發展，用腳踏車的人數會減少，腳踏車可能會消亡， 然而，這幾年我收集的一些信息讓我相信腳踏車仍然會繼續在現代社會發揮極其重要的作用。
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.
環境學家指出：持續增加的污染不僅會導致像全球變暖這樣嚴重的問題，而且還將威脅到人類在這個星球的生存。