21. the information i’ve collected over last few years leads me to believe that this knowledge may be less useful than most people think.

　　从这几年我搜集的信息来看，这些知识并没有人们想象的那么有用。

　　22. this is a matter of life and death--a matter no country can afford to ignore.

　　这是一个关系到生死的问题，任何国家都不能忽视。

　　23. for my part, i agree with the latter opinion for the following reasons:

　　我同意后者，有如下理由：

　　24. before giving my opinion, i think it is important to look at the arguments on both sides.

　　在给出我的观点之前，我想看看双方的观点是重要的。

　　25. 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。

　　26. although many people claim that, along with the rapidly economic development, the number of people who use bicycles is decreasing and bicycles are bound to die out. the information i’ve collected over the recent years leads me to believe that bicycles will continue to play extremely import

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