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.

当前在高校和研究机构对教育存在着大量争论，其中一个问题就是教育是否是个终身学习的过程。

40. This issue has caused wide public concern.

这个问题已经引起了广泛关注。