【正文】 而是因為它們釋放出來的二氧化碳更容易把人殺死。所以答案A表述的內(nèi)容同本段相符。2. How（如何，詢問方式） did Wignall calculate （計算）the killing power （殺傷力）of those older volcanic eruptions?A. By estimating how long they 。B. By counting the dinosaurs they C. By studying the chemical position of 。D. By paring the proportion of life wiped out with the volume of lava 。分析：毫無疑問這是細節(jié)題，核心詞就是人名：Wignall。Paul Wignall（核心詞出現(xiàn)了，接下來的內(nèi)容請大家注意了！?。。ゝrom the University of Leeds was investigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed off large numbers of animals, but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock. To his surprise, the older the massive volcanic eruptions were, the more damage they seemed to do . He（代指Wignall ） calculated the “killing efficiency（功效） for these volcanoes by paring（比較）the proportion（比例）of life they killed off with the volume of lava（熔巖)that they produced. (答案出處！)He found that size for size, older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.3. When did dinosaurs bee extinct?恐龍什么時候滅絕的？A) 300 million years ago.B) 250 million years ago.C) 60 million years ago.D) 65 million years ago分析：這是標準的細節(jié)題，核心詞：dinosaurs bee extinct。而且這題的特點就是數(shù)字，所以在接下來的段落中大家要用筆標出所見到的數(shù)字加以判斷！The Permian extinction, for example, which happened 250 million years ago（答案B，但和dinosaurs bee extinct沒有關系，不是答案！）, is marked by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe. Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide. The global warming that followed wiped out 80 per cent of all marine genera at the time, and it took 5 million years for the planet to recover. Yet 60 million years ago（答案C，但和dinosaurs bee extinct沒有關系，不是答案?。? there was another huge amount of volcanic activity and global warming but no mass extinction. Some animals did disappear but things returned to normal within ten thousands of years. “The most recent ones hardly have an effect at all,” Wignall says. He ignored the extinction（該詞是extinct的同根詞，所以含義應是一樣的?。?which wiped out the dinosaurs(核心詞露面了！) 65 million years ago（這是答案D，所以這就是我們所要找的?。。。? because many scientists believe it was primarily caused by the impact of an asteroid. He thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of CO2. can be inferred from paragraph 3 concerning（關于、涉及到） dinosaurs?A) They were killed off by an asteroid（小行星）.B) They died of（死于） drastic（急劇的） climate change.C) They were wiped off by a volcanic eruption.D) The cause of their extinction has remained a controversial （有爭議的）issue.分析：題目就告訴我們這是一道推斷題，是第三段。這是一道比較難的題目。需要大家要讀懂句子，還要有推理能力：相關的句子：“The most recent ones hardly have an effect at all,” Wignall says. He ignored（忽略、忽視） the extinction which wiped out the dinosaurs 65 million years ago, because many scientists believe it was primarily caused by the impact of an asteroid. He thinks that older volcanoes had more killing power because more recent life forms were better adapted to（更好的適應） dealing with increased levels of CO2.主要句子是說：Wignall忽略了6千5百萬年前恐龍的滅絕是否跟火山爆發(fā)有關，而其他很多科學家都認為恐龍的滅絕是受一顆小行星的影響。這就可以說明科學家們關于恐龍滅絕的原因是由爭議的，因此選擇D。5. What is the main thesis of the article?（文章的主要論點是什么？）A) Volcanic eruptions are not always deadly.B) Older volcanic eruptions were more destructive.C) Carbon dioxide emissions often give rise to global warming.D) It is not easy to calculate the killing power of a volcanic eruption.分析：通過題目分析這是一道主旨題。相當于在文章里尋找中心句。其實文章第一段就是中心：Volcanoes were more destructive in ancient history, not because they were bigger, but because the carbon dioxide they released wiped out life greater ease.做完型填空的技巧：我們一般認為完型填空題屬于送分題，因為考題通常是從當年教材所給出的文章中挑選一篇直接出題。但需注意在考題設置時并不是原封不動將原文搬過來，而出題點和空格的設置都會有變化，這就說明平時在做題時不要背答案，而且要把文章中所有的單詞盡可能都弄明白，否則送分題也有可能成為丟分題。因此，我在這里建議大家在復習時要緊扣教材，不要在從外面找不相關的題做，這樣是一點幫助也沒有的！完型填空，旨在考察綜合運用英文能力，考題主要從3個方面設計：1）詞法結(jié)構(gòu) 2）語法結(jié)構(gòu) 3）前后邏輯關系。詞法上考查實詞（動/名/形容詞）比例高于虛詞（副/介詞）。另外還有多義詞/短語；短語的固定搭配等等。那么，在大家做完型填空題時最好能在文章標題的指引下，先通讀全文，對文章大意有個了解，接下來在細讀這個環(huán)節(jié)中才會有的放矢，而不會像沒頭蒼蠅瞎蒙亂猜。最后一遍是查讀，顧名思義，邊檢查邊讀，將一些拿不定主意的最后確定下來，這樣效果會最佳。完型填空答題思路：1. 分析文章標題， 了解文章主題， 確認文章主題詞；2. 對比被選項， 推測答案可能出自的范圍；3. 關注空格兩端結(jié)構(gòu)，借助空格所在的局部搭配結(jié)構(gòu)及搭配語意判斷答案；例題分析：Gun Rights in the US Immediately after the shooting at Virginia Tech University, Americans gathered to mourn the dead. The president and the state governor both hurried there to share the ___1 . But the majority of Americans still cling to their right to ___2 weapons. Strictly speaking, the US is not the only country ___3 gun violence has destroyed lives, families and munities in everyday circumstance. But the US is one of the 4 countries that seems unwilling and politically incapable of doing anything serious to stop it. In countries like Britain and Canada. the government adopted stricter 5 control soon after serious gun violence incidents. US leaders, however, are held 6 by the gun lobby and the electoral system. The powerful National Rifle Association, the major supporter of gun 7 in the US, is too strong for any party to take on. Most Republicans oppose gun controls anyway. 8 the years, the Democrats have found that they can either campaign for gun control or win power, not 9 。 they prefer power. According to the US Bureau of Justice Statistics, firearm incidents accounted 10 nine percent of the million violent crimes in 2005. So, although opinion polls show most Americans want stricter gun laws, many don39。t want to give up their arms they 11 to protect themselves. Dave Hancock, a Virginia gun lover, is one example. In an interview he said. If one professor in Virginia incident had been carrying a legal weapon they might have been able to 12 all this. In his opinion, the massacre is an argument for more people to carry, weapons, not fewer. But at the root of Ameri