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  3. Does walking on the moon make life better for people on earth? (41) all the problems of our own world, why should we be spendi

Does walking on the moon make life better for people on earth? (41) all the problems of our own world, why should we be spendi

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问题     Does walking on the moon make life better for people on earth?  (41)  all the problems of our own world, why should we be spending huge sums on trips to outer space? Such questions as these are often asked, especially  (42)  those whose tax money is paying for space explorations. The answers to these questions are many and varied.
   Up to now, the practical benefits resulting  (43)  space research have included the development of new methods and skills, new processes, new services, new products, and even new companies created to make use of what  (44)  through space travel. Also among the benefits are better education (especially in scientific subjects),  (45)  management, higher quality of industrial products, and more rapid economic growth. People all over the world are now served by  (46)  weather predictions, better communication systems, and better understanding of the earth and its environment. Everyone will benefit  (47)  observations from space make it possible to measure the earth’s resources and  (48)  whether or not they are being used properly.  (49)  the space program will help our world deal with the problems of the environment. It has already brought a new appreciation of the complex system  (50)  man is only a part.
选项 A、from
B、in
C、out of
D、by
答案A
解析 result本来是名词，是“结果”的意思。作动词用，是不及物动词。result from意为“起因、由来”，句子主语是果，from的宾语是因。result in则刚好相反，是“导致”的意思，句子主语是因，in的宾语是果。result from意为“由……产生”：result in意为“结果是……”；C项out，of，D项by不能和result构成固定短语。根据题意：直到现在，由太空研究所产生的现实效益包括……。因此，A为正确答案。
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