B The Calculations Made at the Berlin Workshop
C The Previous Calculations of the Effect of Aerosols
D The Scientists’Agreement
E The Authoritative Conclusion
F Greenhouse Gases
27 When the cover diminishes in the coming decades,temperature
28 The conclusion reached at the Berlin workshop
29 The Berlin workshop concluded that the real figure
30 The increase of greenhouse gases
A will influence future climate change
B was somewhat surprising
C will rise rapidly
D was known to US all
E was much higher than had been expected
F will drop dramatically
文章主题分析:Global Warming
Smoke is clouding our view of global warming, protecting the planet from perhaps three- quarters of the greenhouse(温室)effect.
cloud v.使不清晰, 使多云,使阴暗;
The sky clouded over.天空中云层密布(clear up v. 放晴)
in the clouds 空想的; 想象的;不真实的;不切实际的
被选择项分析:
A Atmospheric Scientists
B The Calculations Made at the Berlin Workshop
C The Previous Calculations of the Effect of Aerosols
D The Scientists’Agreement
E The Authoritative Conclusion
F Greenhouse Gases
分析:B和C中一定会有答案出现。
直接解题:
A Atmospheric Scientists
B The Calculations Made at the Berlin Workshop
C The Previous Calculations of the Effect of Aerosols
D The Scientists’Agreement
E The Authoritative Conclusion
F Greenhouse Gases
23 Paragraph 2
2 This was the dramatic conclusion reached last week at a workshop in Dahlem,Berlin, where top atmospheric scientists got together, including Nobel prize winner Paul Crutzen and Swedish scientist Bert Bolin,former chairman of the UN’S Intergovemmental Panel on Climate Change (IPCC).
E.分析:该段结构“这是一个具有很大影响的一个结论,在。。地方达成的,由。。科学家达成”(注意借助各句子主干内容判断句子大意),所以判断E(段落中提到的科学家仅仅是为了给提到的结论增加权威性)是答案。同时可以判断A是干扰项可以被排除掉。
(A Atmospheric Scientists)
B The Calculations Made at the Berlin Workshop
C The Previous Calculations of the Effect of Aerosols
D The Scientists’Agreement
F Greenhouse Gases
24 Paragraph 3
3 IPCC scientists have suspected for a decade that aerosols(浮质)of smoke and other particles from burning rainforest,crop waste and fossil fuels are blocking sunlight and counteracting the warming effect of carbon dioxide(二氧化物)emissions.Until now,they reckoned that aerosols reduced greenhouse warming by perhaps a quarter, cutting increases by 0.2。C.So the 0.6。C of warming over the past century would have been 0.8。C without aerosols.