By the way, when biology and chemistry met, biochemistry came into being as a strong hybrid of the two independent parents. One of my best friends happens to be an excellent graduates major in bio-pharmacology, who once told me before entering the total systematic study of this newborn popular course, he must prepare the rationales of chemistry indispensable and necessary in later research assignments. After the collection of the blood samples, we should certainly not directly put them under the micro-instruments to observe and then make out the papers about analysis of the results, as a prerequisite our researchers have to import some chemical reagents as an additive instilling into the specimens to function with the blood ingredients, only after the process can we take them into analysis. Without the chemistry, biology is just a pond of backwater and vice versa, any bio-chemical scholar ought to taste the exceptional favor.

　　So much have been discussed in details covering three particular domains, in a sense, illustrates the interrelationship is the guarantee of the breakthrough of some certain academic topics, possibly in some special circumstances can also be generalized to a more broaden range. No field after all, I believe, can survive well surrounded by the asphyxiating academic buttress; the only escape is breaking it from outside.

　　点评：范文分别就经济、文学及自然科学3个不同领域展开论证，实现了有效而全面的论证。

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