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  3. Science and technology are productive forces. The scientific and technological revolution has played a very important role in th

Science and technology are productive forces. The scientific and technological revolution has played a very important role in th

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问题     Science and technology are productive forces. The scientific and technological revolution has played a very important role in the high-speed development of the economies of western countries including the United States since the war.
    Right before the end of the war, the U. S. got remarkable achievement in the three fields of atomic energy, electronic computers and space navigation. These three great inventions were applied to civil industries in the postwar period, which has led to the third great scientific and technological revolution in man’ s history. It was originated(开始)from the U. S. and it benefited the U. S. most.
    The first computer came into being in 1945 and in the same year, the first atom bomb was tested. Soon after the first man-made earth satellite of the Soviet Union was sent into the sky in 1957, the U. S. launched her earth satellite into the orbit. Then the U. S. started an unprecedented(空前的)Apollo program, with the aim of sending man to the moon within a decade. The project was successfully carried out and in 1969, for the first time in man’ s history, two human beings landed on the moon. It was the most striking triumph in the twentieth century.
    Science has been greatly responsible for the rise on big business, as it has given industry certain technological advances, such as assembly-line production. Since World War II, the computer has produced major changes in our way of doing things. Computers have also helped social scientists to take a more experimental view of humans and their universe.
The first atom bomb was tested______.
选项 A、before 1945
B、in 1945
C、in 1957
D、After 1957
答案B
解析 根据第三段第一句“第一台计算机在1945年问世，同一年第一颗原子弹试验成功”可知选B。
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考研英语一

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