单选题
Which of the following is the main cause of global warming?
A．Fossil fuel．
B．Greenhouse gases．
C．Increased dryness．
D．Violent storm patterns．
Which of the following is the main cause of global warming?
A．Fossil fuel．
B．Greenhouse gases．
C．Increased dryness．
D．Violent storm patterns．
参考答案B
解析:细节辨认题。新闻中认为造成全球变暖的主要原因是温室气体的排放，即“The scientists say there is a greater than a 90%chance that green．house gases are the main cause of rising temperatures and sea levels．”所以答案为B。
联合国政府问气候变化专家委员会部分专家于2007年初聚会巴黎，讨论全球变暖问题，协调各国有关气候变暖的研究和统计数据，修订第四份委员会评估报告。涉及的主要内容为近年来全世界在气候变暖方面的研究和进展，海平面升高、永冻冰融化等现象的现状、发展和影响，以及气候变化的发展趋势等。
联合国政府问气候变化专家委员会部分专家于2007年初聚会巴黎，讨论全球变暖问题，协调各国有关气候变暖的研究和统计数据，修订第四份委员会评估报告。涉及的主要内容为近年来全世界在气候变暖方面的研究和进展，海平面升高、永冻冰融化等现象的现状、发展和影响，以及气候变化的发展趋势等。
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A．there were fewer studies done
B．there were fewer policy proposals
C．there was less agreement
D．there were fewer objectives
单选题
The cause of the Indian train accident was
A．terrorist sabotage．
B．yet to be determined．
C．lack of communications．
D．bad weather．
The cause of the Indian train accident was
A．terrorist sabotage．
B．yet to be determined．
C．lack of communications．
D．bad weather．
A．The accident occurred on a bridg
B．The accident occurred in New Delh
C．There were about 600 casualtie
D．Victims were rescued immediatel