1叶格尔CM等著.飞机设计.杨景佐等译.北京:航空工业出版社,1986 2杨景佐,曹名编.飞机总体设计.北京:航空工业出版社,1991 3 Raymer D P. Aircraft Design: A Conceptal Approach. AlAA Education Series, 1992 4[美]雷曼尔DP著.现代飞机设计.钟定逵等译.北京:国防工业出版社,1992

Pre-reading Questions 1. Why were the girls warned that they should not regard school as \Brighton beach\ and what was implied in the warning? 2.What is the purpose of education according to the author?

What is Online Learning? In an online lesson, the computer displays material in response to a learner's request. The computer promotes the learner for more information and presents appropriate material based on the learners response. The material can be traditional lessons and tests that are transcribed into a computer program. The material can also be a complex program that tracks users'input and

德育是教育者根据一定的社会要求和受教育者思想品德形成的规律，有目的、有计划、有组织地对受教育者施加思想、政治和道德影响，并通过受教育者积极地认识、体验、身体力行，以形成他们的思想品德的活动

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1. It is indisputable that(无可争辩)there are millions of people who still have miserable life and have to face the dangers of starvation and exposure. 2 No one can deny the fact(没有人能否认)hat persons education is the most important aspect of his life