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  3. In science the meaning of the word "explain" suffers with civilization’s every step in search of reality. Science can not really

In science the meaning of the word "explain" suffers with civilization’s every step in search of reality. Science can not really

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问题    In science the meaning of the word "explain" suffers with civilization’s every step in search of reality. Science can not really explain electricity, magnetism, and gravitation; their effects can be measured and predicted, but of their nature no more is known to the modem scientist than to Thales who first speculated on the electrification of amber. Most contemporary physicists reject the notion that man can ever discover what these mysterious forces "really" are. Electricity, Bertrand Russell says, "is not a thing, like St. Paul’s Cathedral; it is a way in which things behave. When we have told how things behave, when they are electrified, we have told all there is to tell." Until recently scientists would have disapproved of such an idea. Aristotle, for example, whose natural science dominated Western thought for two thousand years, believed that man could arrive at an understanding of reality by reasoning from self-evident principles. He felt, for example, that it is a self-evident principle that everything in the universe has its proper place, hence one can conclude that objects fall to the ground because that is where they belong, and smoking goes up because that is where it belongs. The goal of Aristotelian science was to explain why things happen. Modem science was born when Galileo began trying to explain how things happen and thus originated the method of con- trolled experiment which now forms the basis of scientific investigation.
The aim of controlled scientific experiments is ______.
选项 A、to explain why things happen
B、to explain how things happen
C、to describe self-evident principles
D、to support Aristotelian science
答案B
解析 “controlled scientific experiments”出现在短文的结尾，文章最后一句指出现代科学始于伽利略时期，他试图解释事情是怎样发生的，以至于出现了controlled scientific实验方法。换言之这种方法也就是要解释事情是怎样发生的。故答案为B。
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