关于一道英语选择题According to new research,one contradictory feature

关于一道英语选择题
According to new research,one contradictory feature of global warming is that it will probably lead in the end to a period of much colder weather,at least in Europe.Scientists base their theory on what happened the last time the world warmed up,8,300 years ago.They have discovered that when the ice melted from the northern polar ice cap it became trapped in an enormous lake in northern Canada.As more ice melted this lake suddenly burst open,releasing millions of tons of freezing fresh water into the North Atlantic.This flood of water was so large that it prevented the normal flow of water in the Atlantic,which takes warm water from the tropics north to Europe.When this flow of warm water was cut off,temperatures in Europe dropped by between three and eight degrees Celsius over the next two hundred years.Scientists believe that a similar process could occur in the next century if the Greenland Ice Sheet starts to melt.“Ultimately,that’s the interest here,” says Richard Alley,an American climate expert.“The climate hasn’t varied much in 8,000 years.But the big changes could come back!”
4.According to Paragraph 4,the climate in Europe became colder 8,300 years ago because __________.
A) global warming reversed,and so temperatures started to drop around the world
B) ice moved south to cover Europe and the North Atlantic
C) enormous lakes of freezing water covered Canada and Europe
D) melted ice in the North Atlantic stopped warm water from reaching Europe
为什么?
毕竟自己水品不是很高
对于答案的错误判断能力也不是很自信
不过这次我觉得D是对的
200分聊表谢意

选D
文章大意是说的一个“物极必反”的道理,即全球变暖最终将导致新的冰川期,因为大量融化的冰川涌入大西洋阻止了正常的温暖洋流到达欧洲海域,致使温度急剧下降.
你用的是什么教材?如果是新东方的TOEFL或者SAT那么就不必奇怪.那里面错误的答案太多了
我认为A是错的,至少是有歧义的.怎么能说Global warming REVERSED 了呢?如果这样的话是不是说冰川该重新增大,温室气体开始自动减少了呢?