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写作结尾：
一、重复中心思想
结尾回到文章开头阐明的中心思想或主题句上，使首尾遥相互应。增强语言表达力度，达到再次肯定和强调的作用。但不要为结束文章而单纯的重复起始的文字。
二、作出结论
文章最后用几句话提纲挈领地概括全文内容，中肯切要，并进一步肯定文章的中心思想、作者的观点。
三、引经据典
用格言、谚语或习语等富有哲理性的语句总结全文，既言简意赅又有很强的说服力。此种结尾方法给人以语言平淡而情感强烈的印象，让人读来顿生感悟，具有启发思维的作用。还可使用修辞手法，通过套用句型、改变词语来灵活用典。
四、反问结尾
用反问提出问题供读者思考的结尾方式，间接阐述作者的观点。以反问结束全文，发人深省，令人回味，引发读者思考。
五、提出展望或期望
各抒几见：
1) Almost everyone would agree that the birth / appearance / arrival / development of sth.… 2) But this agreement ceases to exist just when it comes to…(议论的主题)
3) Many / Some people contend / believe / argue that… (一方观点) 4) They base their contention / belief / argument on the grounds that… (理由I) 5)Besides, as they often point out, ... (理由II) 6)Yet others react to the issue / matter the other way around and hold / assert that the opposite is just reasonable / more acceptable. (另一方观点) 7) From their angle of view, … (理由I) 8) And even worse, as they claim, … (理由II)
9) I am of / adhere to / stick to the opinion / view / truth that anything new, including…, can bring human society fortunes / merits / advantages or misfortunes / demerits / disadvantages, all depending on ... (我的看法) 10) On the one hand, … (理由I) 11) But on the other, ... (理由II) 12) In short, the key / solution to the problem is always controlled in …
原因分析：
1)As can be seen from the graph / table / diagram, there have been drastic / considerable / unfavorable changes in …(议论的主题)over the past period from __ to __.
2) To be concrete, …only… in __(year) while / whereas the ratio(s) went up to…in __ (year).(变化概述)
3) These changes are most disturbing, so it is necessary for us to go into the whys and wherefores of them first.
4) Some changes, such as …, result from …, but many others have much to do with …
5) In the first place, man’s excessive exploitation of … has done a lasting damage to …, only to … (原因分析I)
6) … (进一步说明)
7) In the second, in order to …, man has had to overwork …, which in turn has accelerated … (原因分析II)
8) In the third, man’s blind application of … has caused permanent changes in …(原因分析III)
9) Among these changes are ... (进一步说明)
10) The list of causes could go on, but they are already enough to indicate that these changes are producing more and more negative effects on the world.
11) These changes not only …, but also…(分析)
12) If allowed to run its course, I firmly believe / I am afraid, this trend will certainly bring more harm / threats to our society / life.(结论句)
n. 解答，解决办法，溶解，溶液
