The Ozone Layer Depletion 臭氧层耗竭
文章来源:未知 文章作者:enread 发布时间:2020-05-14 11:56 字体: [ ]  进入论坛
he ozone1 layer depletion2 is harmful to the environment. The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It was discovered in 1913 by the French physicists3 Charles Fabry and Henri Buisson. The ozone layer contains high concentrations of ozone in relation to other parts of the atmosphere.
A depletion of the ozone layer has been noticed since the late 1970s. In atmospheric4 regions over Antarctica, the ozone layer has become significantly thin, especially in spring season causing the formation of what is called ‘ozone hole’. The main cause of ozone depletion and the ozone hole is man-made chemicals such as the chlorofluorocarbon (CFCs). As a consequence of the deterioration5 of the ozone layer, large amounts of ultraviolet B rays reach the Earth, which can cause skin cancer and cataracts6 in humans and harm animals as well.
The harmful consequences of ozone deterioration paved the way to the adoption7 of the Montreal Protocol8 in 1987. This protocol bans the production of CFCs, halons, and other ozone-depleting chemicals. The ban came into effect in 1989 and since then it has had positive effects on the environment. Ozone levels stabilized9 by the mid-1990s and began to recover in the 2000s. Recovery is projected to continue over the next century, and the ozone hole is expected to reach pre-1980 levels by around 2075. The Montreal Protocol is considered the most successful international environmental agreement to date.
The ozone layer was discovered in the 1970s.
a.  True
b.  False
The deterioration of the ozone layer started in the 21st century.
a.  True
b.  False
The harmful chemicals that caused the ozone layer depletion are not allowed to be produced anymore.
a.  True
b.  False
The ozone layer is still deteriorating10.
a.  True
b.  False

False False True False


1 ozone omQzBE     
  • The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。
  • The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。
2 depletion qmcz2     
  • Increased consumption of water has led to rapid depletion of groundwater reserves.用水量的增加导致了地下水贮备迅速枯竭。
  • Farmers should rotate crops every season to prevent depletion of the soil.农夫每季应该要轮耕,以免耗尽土壤。
3 physicists 18316b43c980524885c1a898ed1528b1     
物理学家( physicist的名词复数 )
  • For many particle physicists, however, it was a year of frustration. 对于许多粒子物理学家来说,这是受挫折的一年。 来自英汉非文学 - 科技
  • Physicists seek rules or patterns to provide a framework. 物理学家寻求用法则或图式来构成一个框架。
4 atmospheric 6eayR     
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
5 deterioration yvvxj     
  • Mental and physical deterioration both occur naturally with age. 随着年龄的增长,心智和体力自然衰退。
  • The car's bodywork was already showing signs of deterioration. 这辆车的车身已经显示出了劣化迹象。
6 cataracts a219fc2c9b1a7afeeb9c811d4d48060a     
n.大瀑布( cataract的名词复数 );白内障
  • The rotor cataracts water over the top of the machines. 回转轮将水从机器顶上注入。 来自《现代英汉综合大词典》
  • Cataracts of rain flooded the streets. 倾盆大雨弄得街道淹水。 来自辞典例句
7 adoption UK7yu     
  • An adoption agency had sent the boys to two different families.一个收养机构把他们送给两个不同的家庭。
  • The adoption of this policy would relieve them of a tremendous burden.采取这一政策会给他们解除一个巨大的负担。
8 protocol nRQxG     
  • We must observe the correct protocol.我们必须遵守应有的礼仪。
  • The statesmen signed a protocol.那些政治家签了议定书。
9 stabilized 02f3efdac3635abcf70576f3b5d20e56     
v.(使)稳定, (使)稳固( stabilize的过去式和过去分词 )
  • The patient's condition stabilized. 患者的病情稳定下来。
  • His blood pressure has stabilized. 他的血压已经稳定下来了。 来自《现代英汉综合大词典》
10 deteriorating 78fb3515d7abc3a0539b443be0081fb1     
恶化,变坏( deteriorate的现在分词 )
  • The weather conditions are deteriorating. 天气变得越来越糟。
  • I was well aware of the bad morale and the deteriorating factories. 我很清楚,大家情绪低落,各个工厂越搞越坏。
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