【正文】
. What has possibly contributed to this problem? In the first place…in the second place…2. It is no easy job to identify the reasons for…which involves several plicated factors. For some…for others…3. A number of factors could account for/lead to /contribute to /result in/be conducive to 4. Some people may think that … is to blame for this problem, but its causes go still/far deeper.5. It will exert a farreaching/profound impact/influence/effect on…6. Admittedly, it may create /give rise to /bring about a host of problems.1. If we ignore/are blind to this problem, the chances are that/ it is most likely that/there is every chance that…will be put in jeopardy.2. No effective/simple solution can be at hand/ in sight to resolve / tackle the problem of …But the general awareness of the importance of …might be the first step in the right direction.3. We need to take a fresh / clear look at this matter/ situation in a new perspective / from a wider standpoint. Otherwise, we won’t e anywhere near solving it. 4. It is essential/ indispensab