时间:2018-12-29 作者:英语课 分类:新视野大学英语:视听说教程 3


英语课

Task 2: A Work Qualification Test

Script

According to a report by Australian researchers, the hole in the ozone 1 layer over Antarctica will probably start closing within five years. They say it may be completely closed within fifty years. The ozone layer protects the Earth from dangerous radiation from the sun. The hole in the ozone layer was discovered over Antarctica almost thirty years ago. At the time, it was three times the size of Australia.

The report found that ozone-destroying gases in the upper atmosphere were at or near their highest levels in the year2000. But since then, there has bee continuous progress made toward the recovery of the ozone layer.

Satellite information showed that levels of ozone-destroying gases in the atmosphere are slowly decreasing. At its largest this year, the ozone hole covered more than 15 million square kilometers. That is down from a yearly average of 23 million square kilometers over the last six years.

Chlorofluorocarbons, or CFCs, are responsible for destroying part of the ozone layer over Antarctica. CFCs have been widely used since the1930s in cooling devices such as refrigerators and air conditioners. CFCs remain in the atmosphere for years.

Government scientist say the level of chlorine in the atmosphere is decreasing because of restrictions 2 on the use of chlorofluorocarbons. The chemicals were restricted under an international agreement called the Montreal Protocol 3 in 1987. Under the Protocol, developing countries promoted to cut their use of chlorofluorocarbons in half by the year 2005. They also agreed to an eighty-five percent cut by the year 2oo7.




Keys: FTTFT




For Reference

1. It was three times the size of Australia.

2. They promised to cut their use of CFCs in the half by 2005 and agreed to an 85 percent cut by 2007.



n.臭氧,新鲜空气
  • 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。
约束( restriction的名词复数 ); 管制; 制约因素; 带限制性的条件(或规则)
  • I found the restrictions irksome. 我对那些限制感到很烦。
  • a snaggle of restrictions 杂乱无章的种种限制
n.议定书,草约,会谈记录,外交礼节
  • 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。
学英语单词
7-dehydrocampesterol
a water bath system
adenoviral
adsorbent materials
alpine milk vetches
anti-classical
antischolastic
aquatic physics
arc second
argyrias
association of American Steam-ship Owners
asymmetric carbon atom
barrister-at-law
Bordunskiy
break a secret
Brown's phenomenon
by the use of
cable work
chip breaker wedge angle
closet basin
cork ga(u)ge
dark stain
detuners
diesel generator room
differential thermal analysis thermogram
discrete reasoning
down-levels
engine-bed
enumerative source
equilateral stacking fault
firenew
first mortgage
free of payment settlement
gluten washer
hot-lines
hugging defence
hydrologist
Ilex strigillosa
incremental value
instrumentation control center
intermediate frequency motor sheep shearer
keep your hands to yourself
key-noters
laid antique
learnable
leg stump
littlemeal
Lone Grove
make a shot
mass appeal program
minirin
mud hydrometer
multiple-seated valve
Munxar
musculi tensor tympani
mutual repulsion
non-payment of contribution
olefine
Ondatra zibethica
one hundred ten
over-inclusiveness
over-violent
pilotbearing
police-types
Poolburn Dam
pressure manometer
proude
psettina iijimae
reduc't
Rosicrucianism
rupture member
sawndres
Saybolt universal viscosity
scragg
seismic dislocation
seropurulent exudate
shrillest
Siwa Oasis
small computer system interface
solid state sweeper
somosphere
squirrel sth away
stallioneer
steal someone's heart
stripped surface
tattwa
telescopic tarpaulin
theopathetic
tip diameter of worm
to resolve
to-dos
transfer relay
two-engine system
tyrantess
under steer
unit numerical code
upconcentrate
valve events
verification cross reference index
whi
woodward rules
zoeys