Usually, there are two reasons to pursue seientifie knowledge: for the

游客2024-08-13  11

问题         Usually, there are two reasons to pursue seientifie knowledge: for
the sake of the knowledge itself, and for the practical use of that knowledge.
Because this second aspect of science effects the lives of most people,【M1】__________
it is much more familiar than the first.Knowledge must be gained,
however, after it can be applied, and often the most important technological【M2】__________
advances arise from research pursued for its own sake.
        Traditionally, new technology has concerned with the construction【M3】__________
of machines, structures, and tools in a relatively large scale.The【M4】__________
development of materials for building bridges, skyscrapers or highways
is an example of this, as it is the development of the internal-combustion【M5】__________
engine and the nuclear reactor.While such activities involve all sections
of the sciences, the overriding goal has been the same, that is, improve【M6】__________
the human condition by finding good ways to deal with the macroscopic world.【M7】__________
        Since World War U , the focus of technology activity underwent
a major change.While the old activities are still pursued, they have been
largely superseded by applications of technology at the microscopic level.
Instead of building large-scale structures and machines, modern-day
technology tends to concentrate on finding improving ways to transfer【M8】__________
information and to develop new materials by studying the way atoms come
together.The silicon chip and microelectronics typify this new technological
tread, as did the blossoming of genetic engineering.The trend can be【M9】__________
expected to continue for the foreseeable decades.【M10】__________ [br] 【M5】

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