2007年职称英语（综合类）模拟试题（五）

　　16. Fermi's team was impressed by Fermi's announcement in the base camp because he could even work out the power of the atom bomb in his mind.

　　A. Right                      B. Wrong                      C. Not mentioned

　　17. Fermi, an experimentalist as well as a theoretician, won a Nobel Prize for producing the first nuclear chain reaction in the world.

　　A. Right                      B. Wrong                      C. Not mentioned

　　18. Dividing a big problem into small problems is a talent Fermi had and a talent that has practical value in life.

　　A. Right                      B. Wrong                      C. Not mentioned

　　19. Fermi problem is to develop the talent of breaking a seemingly unanswerable problem into sub-problems and finding the solution to it, which is a typical Fermi problem.

　　A. Right                      B. Wrong                      C. Not mentioned

　　20. Then the fourth paragraph tells us how Fermi solved the problem of earth's circumference without looking up.

　　A. Right                      B. Wrong                      C. Not mentioned

　　21. The last paragraph concludes the whole writing by stressing the value of important inventions and small discoveries.

　　A. Right                      B. Wrong                      C. Not mentioned

　　22. Fermi was famous for inventing a device to calculate bomb's energy accurately.

　　A. Right                      B. Wrong                      C. Not mentioned

　　2.概括大意与完成句子

　　Blasts from the past

　　1 Volcanoes were more destructive in ancient history. Not because they were bigger, but because the carbon dioxide they released wiped out 1ife with greater ease.

　　2 Paul Wignall from 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.

　　3 Wignall calculated the "killing efficiency" for these volcanoes by comparing the proportion of life they killed off with the volume of lava that they produced. He found that size for size, older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.

　　4 The Permian extinction, for example, which happened 250 million years ago, 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.

　　5 Yet 60 million years ago in the late Palaeocene 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 which wiped out the dinosaurs at the end of the Cretaceous, 65 million years ago, because many scientists believe it was primarily caused by the impact of an asteroid.

　　6 Wignall thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of CO2. Ocean chemistry may also have played a role．As the supercontinents broke up and exposed more coastline there may have been more weathering of silica rocks. This would have encouraged the growth of phytoplankton in the oceans, increasing me amount of CO2 absorbed from the atmosphere.