【参考范文三】
As is seen from the two graphs, it is clear that with the rapid growth of U.S. population from 1800 to 1990, the number of its wildlife species no longer existing soared during the same period. Naturally, we can draw the conclusion that the sharp decline of wildlife species resulted from the population growth.
Several reasons may account for this phenomenon. To begin with, as the population grows, people consume much more natural resources. Second, with the increase of human activities, modern people take up more and more space which exerts a great influence on other species. Finally, the problem of pollution becomes more and more serious with the development of modern industry. More and more animals have to adapt themselves to the decaying environment or move to a totally different place, but not all of them are fortunate enough to survive the changes.
Solving this problem calls for, above all, the government’s efforts to control population growth, to decrease industrial pollution and to enhance the laws to forbid wildlife hunting. Moreover, common citizens should be aware of this ecological crisis and take on the responsibility of wildlife protection. In a word, only when the government and the common people make joint efforts can we hope to find a satisfactory solution to this problem. (216 words)
作文2
图略
The line graph illustrates how the number of people using a London underground station fluctuates over the course of 16 hours (6am to 10pm).
As we can see from the graph, at 6am the number of people at the station stands at only 100. The number shoots up over the next two hours, peaking at 400 at 8am. Then the number descends drastically for two hours, bottoming out at 180 at 10am. The period between 10o'clock and 12o'clock witnesses a moderate growth in the number of people in the station, with the number reaching 280 at midday. Numbers in the following two hours stabilize at just under 300 people. Then the number plummets to only 100 from 2pm to 4pm. Then the next two hours see a dramatic rise again, with 6pm registering 380 people. After 6pm, the number dips again, reaching the lowest point of 130 at 8pm. The period from 8pm to 10pm experiences a slight rise, but then the number of people declines again from 180 at 9pm to 135 at 10pm.
This line graph clearly demonstrates that rush hours in the early morning and the early evening are periods when the station is used by the most people.
作文3
The diagram illustrates in four stages the recovery of the forests in Yellowstone National Park after a devastating forest fire.
In the first picture, while the old forests still exist, they drop bad wood to the soil under them, which renders the soil more fertile. Then lightning and fire strike, destroying the forests completely. And the growth of new forests starts right at this point. The second picture demonstrates that in the first 50 years after the devastating fire, saplings grow in build while descend in overall number. In the next two centuries, the young trees continue to thrive in Yellowstone, because of the fertile soil and the ample sunlight. Then, three hundred years after the fire, the number of trees decline to roughly the same as the old forests.
