With the development of science and human civilization, many formerly unimaginable things come into reality. Some of them have positive effects on our life, but some are distasteful. The phenomenon of _______ (主题现象) is an example of the former / latter one. There are many factors that may account for it, and the following are the most conspicuous aspects. To start with, __________________ (原因1). Furthermore, ______________________ (原因2). Eventually, __________________________ (原因3). Good as ____________ (主题现象) is, it has, unfortunately, its disadvantages. The apparent example is that ___________ (缺点例子1). In addition, ___________ (缺点例子2). On the whole, the phenomenon is one of the results of the progress of the modern society. There is still a long way for us to improve / eliminate __________ (主题现象) and make our life more comfortable.
As is shown by the percentage in the picture X has been on rise/ decrease, X dramatically decreasing from X in X to X in X. From the sharp decline in the chart, it goes without saying that X.
There are at least two good reasons accounting for X . In one hand, X .In the other hand, X is due to the fact that X .In addition, X is responsible for X . Maybe there are some other reasons to show X .But itis generally believed that the above mentioned reasons are commonly convincing.
As far as I am concerned, I hold the point of view that X . I am sure my opinion is both sound and well-grounded.