教材

This paper discusses such problems which are easily solved incorrectly in limitedteaching as, segment function is uncertain not to be elementary function, elementary function is un-certain to be continuous in its field of definition, unlimited variable is uncertain to be infinity, theinfinitely many infinitesimal is uncertain to be infinitesimal, the multiplication of two non- infinitesi-mal is uncertain not to be infinitesimal.

1分段函数不一定不是初等函数我们知道初等函数的定义是：常数和基本初等函数经过有限次的四则运算或复合，用一个解析式表示的函数叫初等函数。教材中的定义强调的"有限次"和"一个解析式"，使很多同学产生"非有限次"和"非一个解析式"的函数就不是初等函数的误解。例1f=ceox，s xx！0为分段函数，但也可以表示为f=e12(x-x2")+cos12(x+x2#"$)-1，故为初等函数。

But she doesn't finish doing all the exerices in that textbook.

但是她并没有做完整本教材上的所有的练习。

She still doesn't finish doing the exercises in the textbook.

她还没有做教材上的相关练习。

He continued with his plan to build a flying machine, in spite of the mockery of his friends.

他不顾朋友们的反对，继续他建造飞行器的计划。在这些教材中出现过。。。

He was foaming at the mouth because of his daughter's rudeness.

他女儿的粗暴态度使他暴跳如雷。在这些教材中出现过。。。

Hhaever,the overflow section profile of gravity dam is composed of several curves, so approximately operations are often used in pratice by repacing curves with fod lines, which notonly affects the accuracy of project designing but also has diffculty in programming and calculat-ing on the computer.

在进行重力坝设计时，必须进行自重荷载计算，而在常见的教材中，对于自重荷载的计算，往往都是以非溢流坝段为例，非溢流坝段剖面由直线和拆线组成，自重荷载计算比较简单。

Teachers" and students" wrong teaching method -- force-feed type teaching and study. Students creativity is low, lacks critical spirit to the knowledge, can not innovation new knowledge. The rank system relations between teacher and student, students are in a passive position.

它造成师生的错误教材观；师生的错误的教学方法——填鸭式的教与学；学生的创造力低下，无从达到知识的创新；师生之间的等级制关系，学生处于被动的地位。

The police had to make a forcible entry into the house where the criminal was hiding.

警察不得不强行进入罪犯藏身的那座房子。在这些教材中出现过。。。

At the back of the text, I put forward some suggestion regarding to the foreside content in the aspect of setting in teaching material and teaching method in classroom, and pointed out some questions waiting for further search.

最后，从研究的结果出发，笔者对教材该部分内容的设置方式以及教师的课堂教学方式等提出了一些建议及有待继续探索的问题。

Based on the long time contemplation and practice, the writer list out efficiency, translation, formularization, talking points, de-regularization, game as key elements in compiling a practicable oral English textbook.

笔者根据多年的思考和实践，认为效率原则、翻译原则、程序化原则、谈点原则、非程式化原则和游戏原则都是提高教材实用化的要素。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。