2. 职称英语
  3. Of all the problems facing modern astronomers, perhaps the most fascinating

Of all the problems facing modern astronomers, perhaps the most fascinating

游客2023-07-24  46
问题     Of all the problems facing modern astronomers, perhaps the most fascinating is: "Can intelligent life exist elsewhere?" Since the Earth is an unimportant planet moving round an unimportant star, it would be a pride on our part to suppose that we are the only intelligent beings in the universe. But to obtain proof is difficult.
    The main trouble is that our neighbor worlds, the bodies in the Solar system appear to be unsuitable for advanced life-forms. The Moon may be ruled out at once; it has hardly any atmosphere. Venus(金星) is little better; the surface temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars with a very thin atmosphere and a severe shortage of water, may well support simple plant life but there seems no hope of finding animals, while the attractive Martians(火星人) of the story-tellers have long since been given up.
    Of course this has not stopped the flow of bright ideas for communicating with the supposed people on Mars.  In the early nineteenth century the great mathematician Gauss suggested planting treepatterns in Siberia(西伯利亚), so that the Martians would see them and replay suitably. Following up this idea, the Austrian scientist Karl Littrow proposed digging very wide ditches in the Sahara, triangular in patterns, and then filling them with petrol or some substance so that, when lit, the ditches would present Martian observers with a "flaming triangle" which would show the existence here of intelligent minds. Even better were the plans of Charles Cross, a French writer of the 1870’s, who wanted to build a large mirror to reflect the sun’s rays and concentrate them on the surface of Mars, thereby making a vast burning-glass. By swinging the mirror around, Cross explained it would be practicable to write words in the Martian deserts simply by burning the sand. For many years he bombared(轰击) the French government with literature about this plan and was very disappointed when no official interest was shown. [br] The opinion of the writer is that ______.
选项 A、there may be other intelligent beings in the universe
B、there are other intelligent beings in the universe
C、people living on the earth are almost certainly the only intelligent beings in the universe
D、people living on the earth are definitely the only intelligent beings in the universe
答案 A
解析 文章第一段第一句就提出问题“别的星球可能存在智慧生命吗?”而后又说：我们会认为自己是宇宙中惟一的智慧生命，但要证实它却很困难。可以看出作者同意有外星人的可能性，即A)项正确。B)认为宇宙里有其他智慧生命，过于肯定；C)认为地球上居住的人们几乎就是宇宙中惟一的智慧生命，与作者意见相左；D)较C)语气更为肯定。故可排除C)，D)。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2865460.html
相关试题推荐
随机试题
最新回复(0)