A
Populations of white-tailed deer are growing rapidly in many parts of the USA. As populations grow, food becomes a problem. Many deer die of hunger. Others grow up small and unhealthy. In
search of food, hungry deer move closer to where humans live. They eat farm crops, vegetables and even trees. Also, increased numbers of deer near roads can cause traffic accidents.
Some people have the idea to catch and move them to other places. But this method is expensive and requires finding another place that can accept the deer without breaking the balance of the ecosystem.
Scientists are also working to develop chemicals to control the deer population. But this plan works for only one year at a time.
Some suggest bringing in natural enemies of deer, such as wolves, lions and bears, to areas with too many deer. But these animals could also hurt dogs, cats and even humans. Other communities have built tall walls around areas to keep out the deer. However, this is impossible for farmers.
But some people are against any kind of action. They support leaving the deer alone.
Animal populations in an area naturally go up and down over time. Doing nothing means that some deer will die of hunger or illness. But finally, the population will reach a size within the carrying capacity of the environment. So, let nature go its own way.
词汇
chemical /'kemɪkl/ n. 化学制品,化学品 enemy /'enəmi/ n. 敌人,仇人
capacity /kə'pæsəti/ n. 容纳能力；能力
句型
1. But finally, the population will reach a size within the carrying capacity of the environment. 但最终,(白尾鹿的)数量将达到环境承载能力范围内的规模。
2. So, let nature go its own way. 所以,让大自然顺其发展吧。
理解
1. What methods do people think of to deal with the growing population of white-tailed deer?
2. Do you think "leaving the deer alone" is a good idea? Why or why not?
Populations of white-tailed deer are growing rapidly in many parts of the USA. As populations grow, food becomes a problem. Many deer die of hunger. Others grow up small and unhealthy. In
search of food, hungry deer move closer to where humans live. They eat farm crops, vegetables and even trees. Also, increased numbers of deer near roads can cause traffic accidents.Some people have the idea to catch and move them to other places. But this method is expensive and requires finding another place that can accept the deer without breaking the balance of the ecosystem.
Scientists are also working to develop chemicals to control the deer population. But this plan works for only one year at a time.
Some suggest bringing in natural enemies of deer, such as wolves, lions and bears, to areas with too many deer. But these animals could also hurt dogs, cats and even humans. Other communities have built tall walls around areas to keep out the deer. However, this is impossible for farmers.
But some people are against any kind of action. They support leaving the deer alone.
Animal populations in an area naturally go up and down over time. Doing nothing means that some deer will die of hunger or illness. But finally, the population will reach a size within the carrying capacity of the environment. So, let nature go its own way.
词汇
chemical /'kemɪkl/ n. 化学制品,化学品 enemy /'enəmi/ n. 敌人,仇人
capacity /kə'pæsəti/ n. 容纳能力；能力
句型
1. But finally, the population will reach a size within the carrying capacity of the environment. 但最终,(白尾鹿的)数量将达到环境承载能力范围内的规模。
2. So, let nature go its own way. 所以,让大自然顺其发展吧。
理解
1. What methods do people think of to deal with the growing population of white-tailed deer?
Catching and moving them to other places; developing chemicals to control the deer population; bringing in natural enemies of deer; building tall walls around areas to keep out the deer.
2. Do you think "leaving the deer alone" is a good idea? Why or why not?
Yes. Because animal populations in an area naturally go up and down over time. Doing nothing means that some deer will die of hunger or illness, but finally, the population will reach a size within the carrying capacity of the environment. / No. Because many deer will die of hunger, others grow up small and unhealthy, and increased numbers of deer near roads can cause traffic accidents. (Either is acceptable)
答案：1. Catching and moving them to other places; developing chemicals to control the deer population; bringing in natural enemies of deer; building tall walls around areas to keep out the deer.
2. Yes. Because animal populations in an area naturally go up and down over time. Doing nothing means that some deer will die of hunger or illness, but finally, the population will reach a size within the carrying capacity of the environment. / No. Because many deer will die of hunger, others grow up small and unhealthy, and increased numbers of deer near roads can cause traffic accidents. (Either is acceptable)
2. Yes. Because animal populations in an area naturally go up and down over time. Doing nothing means that some deer will die of hunger or illness, but finally, the population will reach a size within the carrying capacity of the environment. / No. Because many deer will die of hunger, others grow up small and unhealthy, and increased numbers of deer near roads can cause traffic accidents. (Either is acceptable)