一 计算机能不能取代老师
Although the wide-spread of computer makes it possible for students to study by themselves, the teacher, i believe,should not be substitued by it.
Using the computer is much more mechanization rather than humanism that a teacher could give a student unselfish love.
The minority of student who study on computer without self-control pose a serious threaten to acquire knowledge.
Lacking face-to-face communication may be one of the factors leading to psychology problems.
二飞机旅行对人类的影响
It is quite essential for mankind to travel by air that have three overwhelming impacts on huaman.
Traveling by air satisfies a dream that people could wonder aroud the world.
People perfer taking an airplane as it would save much valuable time than other means of transportation.
The ratio of fatal injury of travelling by air is a little smaller versus automoblies ,trains ,motorcars and so on.
三 武器研制的影响
I am apt to believe that the weapon research has greater disadvantages than its advantages.
The advance of scientific technology for a nation may be a important dimenson represented on weapon research.
However , researching weapon for a developed country could pose an threaten to a nation which haven't attained the technology.
The gradually increase in researching weapon would be a impulse on causing the third world war.
