答案：
The Influence of Life
In the early times when human beings hunted and gathered food, they were not in control of their environment. They could only interact with their surroundings as the other lower animals did.
When they learned to make fire, however, they became capable of altering their environment. To provide themselves with fuel, they cut down trees. They also burned clearings in forests to increase the growth of grass and to provide a greater grazing area for wild animals that human beings fed upon. This development led to farming and domestication of animals. Fire provided the means for cooking plants which had previously been inedible. Only when the process of meeting the basic need for food reached a certain level was it possible for humans to follow other pursuits such as setting up families, forming societies and founding cities.
作者: narcissus32 时间: 2009-6-23 13:31
Automobils
It is impossible to say that any one man invent the automobil.Many individiles living and working in different countries and at different times contributed to its development . Many of the discoveries that went into creation of the automobil were small in themselves.but together they were important.Here are two examples. Carriage is running at a speed of 8 -9 miles an hour. it was almost unheard of in those days.According to automobil historians this was the first practical use of mechnical power to move the viechal.After its first run,the mechion reported burned up while the inventor and his friends were celebrated its success at a pub. Can Ford is considered the father of morden mass production is famous model tea car because of its low price made possible to produce cars on a large scale and his effects made it excessable on ordernely people.
