As for the question that which is better, A or B, different people have different opinions. A has its advantages, but at the mean time, it has many disadvantages.
In my point of view, I would prefer B. First of all, (1) 支持 B 的原因之一。
For example, (2) 举例说明支持 B 的原因之一。
Another reason is that (3) 支持 B 的原因之二。
The third reason, however, goes this way: (4) 支持 B 的原因之三。
So from what has been discussed, one can reach only this conclusion that (5) 重申观点。
Some people believe A, they point out the fact that (1) 人们支持 A 的原因。However, other people believe B. They hold that (2) 人们支持 B 的原因。
As far as I’m concerned, I prefer A. As we all know (3) 我支持 A 的原因之一。
I remember (4) 举例说明。
In addition, (5) 我支持 A 的原因之二。
On the other hand, (6) 从反面论证 A 的优势。
Last but not least, (7) 我支持 A 的原因之三。
As a matter of fact, there are also some disadvantages in A ，such as (8) 举例说明 A 的劣势。But these can be compensated by its advantages.
1.The debate these days draws our attention about whether
2.It goes without saying that
3.There is no avoiding the fact that
4.There has been a long-term dispute over whether
5.have found their popularity and acceptance among citizens.
6. in my country have become the focus of public concern.
7.Even three-year-old children know about severe problems brought
by in cities around the world.
8. It wasn’t until that
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10.When economy is running on the right way for a relatively long period, and commercialization is sweeping across the world, the issue of has been mentioned and emphasized in our society more frequently than ever before.
11. It is not uncommon these days to
12. there is a belief that
13. It is reported that
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2. Convincing arguments can be made that
5. On the one hand, it is arguable that
6. There is no denying that
8. It is true that
9. It is evident that
10. It is apparent that
11. It is obvious that
12. It is clear that
13. It is manifest that
15. There is no doubt that
16. It goes without saying that
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4. It has been calculated that
5. It has been speculated that
3. Last but not least,
4. More importantly,
5. Above all,
1. In other words,
2. As a matter of fact,
3. It seems that
4. In fact,......