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2017英语专业四级听力听写50篇（48）

2016-06-14 10:53:37来源：网络

　　2017英语专业四级听力听写50篇(48)

　　2016年英语专业四级考试已于4月23日考完，对于这次2016专四题型改革，考生深感考试难度增加。新东方在线专四频道奉劝考生们不要灰心，从现在开始通过每天的专四听力练习坚持下去，相信你们会顺利通过考试，下面是为大家整理的2017英语专业四级听力听写50篇。

　　Population Growth

　　It is well-known that there has been a drastic increase in world population. But it is probably less well-known that the extinction rate of wildlife species is experiencing a parallel trend.

　　Take the United States for instance. In 1990, U.S. population reached an unprecedented level of 250 million, which is approximately 250 times of that of 1800. On the other hand, wildlife species are disappearing from the country at an alarming rate. By 1900, about 70 wildlife species would never be seen in U. S. We are fully justified in declaring that the explosive population growth has had an adverse effect on the survival of wildlife species and will be a constant threat to the wildlife resources if no immediate actions are taken.

　　Nothing has ever equaled the magnitude and speed with which the human spedes is altering the physical and chemical world. It has been demolishing the environment we are living in. (152 words)

　　Useful Words and Expressions:

　　drastic adj.激烈的

　　take drastic measures采取果断措施「激烈手段」

　　a drastic debate激烈的辩论

　　make drastic change 做彻底的改变

　　species n.种类

　　extinction n.消失，消灭

　　Paralell adj.平行的，相同的，类似的

　　trend n.倾向，趋势

　　unprecedented adj.空前的

　　approximately adv.近似地，大约

　　justify v.证明……是正当的

　　explosive adj.爆炸(性)的

　　magnitude n.大小，数量，量级

　　alter v.改变

　　The weather alters almost daily.天气几乎天天变化。

　　demolish vt.毁坏，破坏

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