一、开头段。
1.开头句，Nowadays, with the rapid development of society, the has aroused wide concern.
2.中心句，There are many reasons for this phenomenon, and the following are the most conspicuous ones.
3.结尾句，Therefore, it is high time that we took some effective measures to solve the problem.
二、主体段1。
1.开头句，The first
2.支持句1，For example, according to a recent survey, about 60% of...
3.支持句2，In addition, with the rapid , more and more people are
4.结尾句，Therefore, it is urgent that measures should be taken
三、主体段2。
1.开头句，Another
四级作文万能高级句型 2.支持句1，Furthermore, with the improvement of people's living standard, an increasing number of people are
3.支持句2，Moreover, the widespread has also contributed to the problem.
4.结尾句，In a word, it is high time that we took some effective measures to solve the problem.
四、主体段3。
1.开头句，The last
2.支持句1，In addition, the also plays a significant
3.支持句2，What's more, the should not be ignored.
4.结尾句，Therefore, it is urgent that measures should be taken
五、结尾段。
1.开头句，In conclusion, from what has been discussed above, we may safely draw the
2.中心句，Therefore, it is high time that we took some effective measures to solve the problem.
3.结尾句，Only in this way in the future.
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