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.
In view of such a serious situation, environmental tools of transportation like bicycles are more important than any time before.
Using bicycles contributes greatly to people's physical fitness as well as easing traffic jams.
Despite many obvious advantages of a bicycle, it is not without its problem.
1. When asked about..., most people believe that..., but other people consider it differently.
2. When it comes to..., people's opinions differ. Some hold the opinion
that..., while others claim that...
3. There is no consensus of opinions among people as to the role of... Some people claim that... while others believe that...
4. There is a general discussion today about the issue of... Those who criticize... argue that... They believe that... But people who advocate..., on the other hand, argue that...
5. Most are of the opinion that... But I personally believe that...
6. Now people in growing numbers are beginning to realize that...
7. Now, it is generally acknowledged that..., but I doubt whether...
1. In 1990, it increased/decreased from... to...
2. By comparison with 1998, it increased/decreased by...
3. The figure has nearly doubled, compared with that of last year.
4. It has increase/decreased almost three times, compared with...
5. The number is twice as much as that of 1990.
6. It accounts for... percent of the total.
7. The number was..., less/more than a half/third/quarter of the total in 1990.