Question

阅读理解 　　Global climate change report warns of ice-free Arctic summers by 2070．The Arctic ice-cap is melting at an unexpected rate, according to one of the most authoritative(权威的)studies on global climate change．Arctic ice is half as thick as 30 years ago．In the same period the size of ice has reduced by 10 per cent． 　　A warmer Arctic could cause sea levels to rise nearly a meter by the end of the century, flooding many coastal regions and perhaps stopping the Gulf Stream(墨西哥暖流), which brings warmer water and weather to northern Europe．Climate change is not just in the future; it is happening now．The Arctic is warming at twice the global rate． 　　If present rates of change continue, there may be no ice in the Arctic in the northern hemisphere summer by 2070, according to the study, to be discussed on Tuesday at an international conference in Iceland．The report is the most completely undertaken on the Arctic region, and is the product of the eight countries－Canada, Denmark, Finland, Iceland, Norway, Russia, Sweden and the US． 　　Warming could be slowed by cutting emissions(散发)of greenhouse gases, but that would need to be done soon．As Arctic ice melts, global warming is likely to speed up．As the ice reflects much of the sun’s heat back into space, a lessening ice cap will mean that more heat is absorbed by the earth．On the other hand, a warming Arctic could make shipping easier, as the journey between the UK and Japan could be shortened by 10 to 12 days by a route through passages that are ice-bound(束缚)today．Besides, the Arctic region is believed to have 25 per cent of remaining oil and gas reserves, and melting ice may improve its accessibility(接近)． (1) The ice in the Arctic is _________． [　　] A． melting faster than ever B． free of ice now C． the thickest in the past 30 years D． going against the global climate change (2) These are the results of the ice melting in Arctic except _________． [　　] A． raising the sea level B． flooding the coastal cities C． preventing the Gulf Stream D． developing the research in the Arctic (3) The report about the ice melting is made by eight countries including _________． [　　] A． America B． Switzerland C． The UK D． The UN (4) Which is not true, if the ice in the Arctic has gone? [　　] A． There will be a shorter route between Europe and Asia． B． It is easier to explode oil and gas． C． The earth will keep the heat from the sun． D． It is certain that the ice will provide more clean water to the Asians

Answer 1

答案：1．A;2．D;3．A;4．D;
解析：

(1)	从第二句The Arctic ice-cap is melting at an unexpected rate,看出北极冰盖融化的速度比以前快多了。
(2)	从第二段A warmer Arctic could cause sea levels to rise nearly a meter by the end of the century, flooding many coastal regions and perhaps stopping the Gulf Stream,看出D项与题干所述无关。
(3)	从第三段的最后一句Canada, Denmark, Finland, Iceland, Norway, Russia, Sweden and the US．看出应该选A项。
(4)	从最后一段的As the ice reflects much of the sun’s heat back into space,…a warming Arctic could make shipping easier,…as the journey between the UK and Japan could be shortened by 10 to 12 days by a route through passages…the Arctic region is believed to have 25 per cent of remaining oil and gas reserves．看出北极冰融化后，水路缩短，不能反射热能，为勘探石油和天然气提供可能性。没有涉及到D项。