The Impact ofAntarctic Ozone Hole

The Antarctic ozone（臭氧）hole is changing weather patternsacross the Southern Hemisphere （半球）,even affecting thetropics,scientists have concluded. The

scientists______(51)thenew study added the ozone hole into standard climate models to_______(52)how itmight have affected winds and rains. They say rainfall has moved

further southtowards the pole and the effect has been_______(53)strong over Australia.

Andof_______(54)interest was the southward of the Southern Hemisphere jet stream.These high一altitude windsare_______(55)to determining weather patterns,in both

hemispheres. Much ofthe cold weather felt in the UK_______(56)the last couple of winters,forexample,was caused by blocking of the Northern Hemisphere stream.

The team found thatoverall,the ozone hole has_______(57)in rainfall moving south along with thewinds._______(58)there are regional differences,particularly concerning

Australia. In terms of the average for that zone,theozone hole_______(59)about a 10% change一but for Australia,it's about 35%.

Their modelingindicated that global warming_______(60)greenhouse gas emissions is also afactor in changing rainfall patterns.

Natural climatecycles are also thought to be important here,as different rainfall patternswere _______(61)in the era before ozone depletion（消耗）and late 20th Century

warming.

Althoughthe_______(62)international organization has significantly checked emissions ofharmful substances,they_______(63)for decades in the atmosphere,and so their

effects are stillbeing felt.Earlier,and international organization forecast that even theAntarctic ozone hole一whichis more severe than its_______(64)in the Northern

Hemisphere一should be_______(65)by 2045—2060._________(65)

A.repeated

B.reproduced

C.replaced

D.repaired