2018专四听力dictation冲刺复习(十二)

2018-03-09 16:04:37来源:网络

2018专四听力dictation冲刺复习(十二)

  2018专四听力dictation即专四考试第一部分听写,共80-90个单词,分值为10分,考试时间为10分钟。专四听力dictation内容为日常校园和社会生活话题。临近2018专四考试新东方在线英语专四频道整理了2018专四听力dictation冲刺复习供大家参考。


  Human Actions

  Human actions can destroy resources. When we produce goods and services that are supposed to improve our health, we may destroy resources. We misuse resources such as air and water by regarding them as unlimited, unchanging, and freely available for use in the production of goods and services. Not all human actions harm. the physical environment. Every resource has the capacity to accept some human abuse. Harmful effects result when human actions generate more waste than the resource is capable of accommodating. Human action that negatively affects a resource is known as pollution. Pollution varies from region to region according to the types of human actions. In general, we find high levels of pollution in regions of concentrated populations. Pollution also varies according to levels of economic development. Most pollution is a by-product of production in relatively developed economies.


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