are only the result of wishful thinking and constitute one more example of believing is seeing. 3.Why is the loss of atmosphere so important? Because oxygen,nitrogen and other gases in the atmosphere are necessary for life. Paras.38-42 1.What Paul Davies said"we have not discovered the Life Principle",what did he mean? What,according to Davies,was the Life Principle? He meant that we still did not know under what kind of conditions a collection of chemical could form themselves into life and what the process would be.In other words,we are still not clear about the origin of life on Earth.Was there a principle guilding the formations of life?If there was one,then perhaps we could create conditions to produce life 2.I've never met anyone.the second time around. No one I have met believes that if evolution on Earth were to take place a second time.a human being who is genetically similar to us would be the result of such evolution.In other words,people I have met think that another evolution on Earth would produce something different from the current human being Paras.43-45 1.The main idea of this section:the theory put forward by Allen Tough and the author's conclusion that there is much to learn about our own little solar system.This conclusion paves the way for the final part of this article. 2.What is the provocative theory put forward by Allen Tough? His theory is that alien probes have aready been with us for a long time and we may be able to perceive their messages on the World Wide Web. 3.What if,some guerrilla radioradio broadcaster beat everyone to it? Why do you think is this possibility mentioned?What danger is involved? Guerrillas,to Western minds today.are equivalent to terrorists.So if they are the first to send an answer,they might provoke the aliens of advanced civilization to attack us,bringing disaster to our globe. 4.Bioastronomy also has its more down-to-Earth side. (1Why does the word"earth"begin with a capital letter? Usually,down-to-earth should not be capitalized.Here,the author is turning the phrase into a pun,meaning both practical and dealing with issues of this world. (2)What did the author really mean by this statement? are only the result of wishful thinking and constitute one more example of believing is seeing. 3. Why is the loss of atmosphere so important? Because oxygen,nitrogen and other gases in the atmosphere are necessary for life. Paras.38—42 1. What Paul Davies said “we have not discovered the Life Principle”,what did he mean? What,according to Davies,was the Life Principle? He meant that we still did not know under what kind of conditions a collection of chemical could form themselves into life and what the process would b e.In other words,we are still not clear about the origin of life on Earth.Was there a principle guilding the formations of life? If there was one,then perhaps we could create conditions to produce li9fe. 2. I’ve never met anyone . the second time around. No one I have met believes that if evolution on Earth were to take place a second time,a human being who is genetically similar to us would be the result of such evolution.In other words,people I have met think that another evolution on Earth would produce something different from the current human being. Paras.43—45 1. The main idea of this section: the theory put forward by Allen Tough and the author’s conclusion that there is much to learn about our own little solar system.This conclusion paves the way for the final part of this article. 2. What is the provocative theory put forward by Allen Tough? His theory is that alien probes have already been with us for a long time and we may be able to perceive their messages on the World Wide Web. 3. What if, . some guerrilla radio radio broadcaster beat everyone to it ? Why,do you think,is this possibility mentioned?What danger is involved? Guerrillas,to Western minds today,are equivalent to terrorists.So if they are the first to send an answer,they might provoke the aliens of advanced civilization to attack us,bringing disaster to our globe. 4. Bioastronomy also has its more down-to-Earth side. (1) Why does the word “earth” begin with a capital letter? Usually,down-to-earth should not be capitalized.Here,the author is turning the phrase into a pun,meaning both practical and dealing with issues of this world. (2) What did the author really mean by this statement?