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Second Life for the WasteIn 1993, New York State ordered stores to charge a deposit on bev

Second Life for the Waste

In 1993, New York State ordered stores to charge a deposit on beverage(饮料) containers.Within a year, consumers had returned millions.of aluminum cans, glass bottles and plastic, bottles.Plenty of companies were eager to accept the aluminum and glass as raw materials for new products, but because few could figure out.what to do with the plastic, much of it would be buried in landfills (垃圾填埋场).The problem was not limited to New York.Unfortunately, there"were too few uses for second-hand plastic.

Today, one out of five plastic soda bottles is recycled inthe United States.The reason for the change is that now there are dozens of companies across the coun,ry buying disr carded plastic soda bottles and turning them into fence posts, paint brushes, etc.

As the New York experience shows, recycling involves more than simply separating valuable materials from the rest of the rubbish.Waste remains v~aste until somebody figures out how to give it a second life and until economic arrangements exist to give that second life value.Without adequate markets to absorb materials collected for recycling,throwaways actually depress prices for used materials.

Shrinking landfill space and rising costs for burying: and burning rubbish are forcing local governments to look more closely at recycling.In many areas, especially the East Coast, recycling is already the least expensive waste management option.For every ton of waste recycled, a city avoids paying for its disposal, which, in parts of New York, amounts to savings of more than $100 per ton.Recycling also stimulates the local economy by creating jobs and reduces the pollution c,ontrol and er~ergy costs of industries that make recycled products by giving them a more refined raw material

第 16 题 In 1993, New York had taken a very effective means to deal with the waste.

A.Right

B.Wrong

C.Not mentioned

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第1题

单位时间内无线电波传播的距离称为_____。A.频率B.周期C.速度D.波长

单位时间内无线电波传播的距离称为_____。

A.频率

B.周期

C.速度

D.波长

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第2题

声波在一个振动周期内传播的距离称为()。

A.周期

B.频率

C.波长

D.波速

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第3题

电波在1秒的单位时间内幅值大小与方向周期性重复变化的次数称为_____。A.频率B.周期C.速度D.波长

电波在1秒的单位时间内幅值大小与方向周期性重复变化的次数称为_____。

A.频率

B.周期

C.速度

D.波长

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第4题

波长是声波在振动()内所传播的距离。A.半个周期B.一个周期C.两个周期D.四个周期

波长是声波在振动()内所传播的距离。

A.半个周期

B.一个周期

C.两个周期

D.四个周期

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第5题

振荡一个周期的长度称为超声的A、周期B、速度C、波长D、频率E、以上都不是

振荡一个周期的长度称为超声的

A、周期

B、速度

C、波长

D、频率

E、以上都不是

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第6题

在一个振动周期内声波所经过的距离称为()。A.周期B.频带C.波长D.声速

在一个振动周期内声波所经过的距离称为()。

A.周期

B.频带

C.波长

D.声速

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第7题

频率与周期的关系
是:______;波传播的速度与波长、周期的关系是:______;波传播的速度与波长、频率的关系是:______.
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第8题

电波幅值大小与方向变化一次所用的时间称为_____。A.频率B.周期C.速度D.波长

电波幅值大小与方向变化一次所用的时间称为_____。

A.频率

B.周期

C.速度

D.波长

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第9题

两列具有相同()与()的波, ()传播时会产生驻波。A.波长,周期,相向B.相位,速度,相向C.频率,振幅,相

两列具有相同()与()的波, ()传播时会产生驻波。

A.波长,周期,相向

B.相位,速度,相向

C.频率,振幅,相向

D.相位,速度,同向

E.频率,振幅,同向

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