issue4 fly aw第二十九次作业 写完自己修改了一下 希望大家批改！

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8:50-9:56
提纲：
1.论点：只靠外来之力是不能让一个学科得到最好的发展的
2.学科交叉确实为一些学科带来新的发展
3.但是不能说这些学科要达到最好必须靠外来学科
a.基础学科过去的辉煌是靠滋生发展而来
b.有些学科没法和其他学科交叉依旧有很好发展
c.外来学科的学者可能无法完成本学科的任务
3.一个学科要得到最好的发展需要本学科的专家在专业知识的基础上涉猎更多其他学科的优秀之处
One field's advance comes from the hard working of many people. No one can assert that significant improvement can not get untile outsider knowledge and experience brought to the subject.

Really, reports and information in latest news or magazines give us the massage that knowledge from other fields can bring fresh air to a special field. Especially in chemistry biology and physics, these fundimental subjects need stimulate after hundreds of years improving. With new speculating and technology come from other study fields, interesting phenomenon occurs in old field. Today, munerous physical scientists begin studying biology and make many contribution on it using physical methods. Even more, a new field called physics-biology has been improved by these people.

But the phenomenon does not mean a field will never be advance without other knowledge. Let us have a look at again on fundimental fields.So many outstanding successes have occured in history when people never know the opinion of cross knowledge. With hundreds of years development by themselves, in physics chemistry culture and art, these subjects help people understand our world and ourselves, they solve problems on human healthy and normal daily life, they also give human happiness and enjoyment.

Otherwise, many subjects have no chance to get touch with other knowledge, can't they improve any more? No, they are still developing very good. In mathematics, count and logic inference are the only work done by scientists. No other work can instead of them. Still, mathematicians success only using the formulae to solve their own questions which even help other subjects.

Although outsiders have new ideas in a subject, can they accomplish the work they not acquainted? People always say"The gulf between to subjects can not be brigded." And it is so different from having a good idea to making it come true. Without basic knowledge supporting, one may feel so difficult to solve a simple problem. That's why we not always hear about significant advance on physics made by an artist.

To search the best result in a field, the challanges are still on their own scientists' shoulder. But they need study more knowledge of outside fields  to enhance their thinking style and acadamic study methods. With these improving, we can wish a new scientific era comes to us.