Johnson believes that international action to reduce global warming is required immediately or it may be too late.“Everything is connected—Antarctica may be a long way away but it is an important part of the Earth's

　　system，” said Johnson.“It contains 90% of the world's ice,70% of the world's fresh water and that is enough，if it melts completely，to raise sea levels by 63 metres.”

　　Even in a worse­case situation scientists don't expect the ice to entirely disappear，but predict that，because of the melting ice sheets，average sea level rise will be around 1.4 metres higher by the end of the century.

　　【语篇解读】　本文主要描述了由于臭氧层的破坏，南极洲冰层正处于加速融化的危险中。科学家认为南极冰层不会完全消失，但海平面会随着冰层的融化而上升。

　　1．The underlined word “paradoxically” (in Paragraph 2) most probably means “________”．

　　A．rapidly

　　B．approximately

　　C．contradictorily

　　D．apparently

　　【解析】　词义猜测题。首先，选项词义要牢记；其次，划线词所在句中的but为推断关键，划线词应理解为相反地。

　　【答案】　C

　　2．What is the effect of the hole in the ozone layer on Antarctica?

　　A．It is making much of the continent colder.

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