Many people insist that...
With the development of science and technology, more and more people believe that...
A lot of people seem to think that...
There are different opinions among people as to...Some people suggest that...
There is an old saying...It"s the experience of our forefathers,
however，it is correct in many cases even today.
Today,...which have brought a lot of harms in our daily life.
First,... Second,... What makes things worse is that...
It is well-known to us that...
As far as my knowledge is concerned,...
Recently the problem of...has been brought into focus. ==Nowadays there is a growing concern over...
Nowadays has become a problem we have to face.
Internet has been playing an increasingly important role in our day-to-day life.
It has brought a lot of benefits but has created some serious problems as well
With the rapid development of science and technology，more and more people believe that...
It is a common belief that...
It is commonly believed that...
A lot of people seem to think that...
It is universally acknowledged that...