1、成才之路 英语,路漫漫其修远兮 吾将上下而求索,人教版 必修2(通用本),Wild life protection,Unit 4,Animals in DangerThree billion years after life began, the earth is now the home to many different kinds of living thingsperhaps five to ten million kinds. However，many of these are dying out. It is thought that between the years 1550
2、and 1950 an average(平均数) of one kind of living things died out each year.,By 1985 this had risen to one per day. Between 1980 and 2012 we may lose another half a million different kinds of living things.,There are many reasons for animals dying out，but the most important one is the part that humans
3、have played. First, many animals have been killed for food. Second, many of the places where these animals used to live have been destroyed. Dry lands have been watered. Wet lands have been turned into fields. Forests have been cleared. Much land has either been changed to farmland or been used for
4、building. Polluted rivers and lakes have also been a cause of death.,One example of an animal in danger is the tiger. There are three types of tigers living in China: the South China，the Northeastern, and the Bengal. In all there are probably no more than a total of 400 tigers left in China. Many of
5、 the forests where they lived were destroyed. Also，tigers were hunted and killed until in many areas the entire population had disappeared. In 1900 there were about 100,000 tigers in Asia.,In 1970 when the shooting of tigers was stopped there were just 5,000 left. In India, however, the population o
6、f tigers has increased(增加), from 2,000 in 1972 to about 5,000 in 1989. Perhaps the same progress can be made in China.,1What is the most important reason for animals dying out? (no more than 30 words)_2How many types of tigers are there living in China? What are they? (no more than 10 words)_,答案：1.The part that humans have played. Many animals have been killed for food and many of the places where animals used to live have been destroyed. 2. Three types: the South China, the Northeastern and the Bengal.,
