开头
An increasing number of people begin to realize/ complain/ question that...
OR: The majority of people tend to have a favorable/ an unfavorable attitude towards something
OR: XXX has now caused wide public concern
OR: When it comes to... people often consider...
The thing is, which XXX, A or B, (is a more efficient mean of learning/ what do we mean by)? People may give various answers to this question.
OR：Ask people… and they may give a diverse of answers based on their individual value systems
Some believe that… while others/ some claim…
On balance, my favor goes to A....
