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
acid-carbonate
al qahirah (cairo)
Alemli
angeloylfuranofukinol
backstairs intrigue
barterable
benippled
beweapons
bus insurance
charabanc
childhood aphasia
CLHE
cold food pantry
colocalisation
common boneset
common licence
corrupcion
cross countries
cross-country skiing
crystal vessel
cupric fluoride
Diksonskiy Rayon
distributing valve board
double-beam oscillograph
drawbeam
dry foot
EAggEC
electroelute
endodermoreaction
enjoyee
eschewal
extension reflex
ezekiass
filter expresser
Flying Scotsman
gadolinia
genus sennas
gergon
get sth out
good natures
Harmonized Description Coding System
highwater marking
hirings
hot-bath quench aging
i was wondering
lame-ducks
laughed my ass off
liquid monomer plastic
maids
Manx cat
melanoderma toxica
Microzamia
modern cybernetics
mountain phlox
negative going
nonlead
octopodes
papillary epithelioma
perichareia
periodic merit rating
phenylmercuric hydroxide
place-brick
Placido's disk
PNID
polydystrophic
pyrometer lamp
radionavigation tailbuoy
robbo
rock craft
rossmen
scrapped vessel
scutle
secondary mouth
see no evil
severe burn
shaw
single-end user
slobbers
small particle contamination
smp (scanning microscope photometer)
son vertex
specialized capital goods
spywares
start-finish
Stoby
stream of people
sulfidize
sun yat - sen university
test ring
tetragnatha ceylonica
thermal conversion
thiazidelike
tonify the kidney to arrest spontaneous emission
toralizumab
tuberculosis of scrotum
tuberculous bacillemia
unemolumented
upper middle class
vitrics
Weston standard cadmium cell
what's your problem
wine-shipper