2. 外语
  3. The urge to explore is innate in Man.【C1】______ his imagination roams, Man seeks also to go. A large part of history is concerne

The urge to explore is innate in Man.【C1】______ his imagination roams, Man seeks also to go. A large part of history is concerne

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问题      The urge to explore is innate in Man.【C1】______ his imagination roams, Man seeks also to go. A large part of history is concerned【C2】______ the exploration of the world in which we live.【C3】  men have set out with amazing courage and fortitude to【C4】______ into unknown regions and lands. They crossed the sea in【C5】______ boats,traversed continents, scaled mountains, fought their way through jungles and swamps, endured【C6】______ hardships — all to explore, to see what had not yet been seen, to make【C7】______ the unknown.  Nor did Man confine his movements 【C8】______ the surface of land and sea. With kites, balloons and aircraft he left the ground and to【C9】______ through the lower atmosphere.  Now outer space receives his attention.
     The hard way to answer the question, why should Man bother about【C10】______ space, is to attempt to list the specific practical benefits【C11】______ result. One knows, from past experience in other areas, that Man will【C12】______ see and discover new things in space.  That will increase our store of scientific knowledge, and this new knowledge will find its way 【C13】______ valuable practical uses.【C14】______ about Man himself, from his experience in space, and from the effects of space and the space flight【C15】______ environment, will be invaluable. The new techniques developed to carry out the exploration of space, and to keep men【C16】______  in space, will inevitably be put into valuable practical uses in everyday life. The areas that will benefit are.【C17】______ .They include communications, generation, transportation and travel, food production,【C18】______ of resources, navigation, human comfort and welfare, biology and medicine, materials, fuels and many others.【C19】______ to state specifically just what the practical outcomes will be is【C20】______ impossible.
【C19】
选项 A、But
B、So
C、Because
D、Even
答案A
解析 逻辑关系题。从本句最后一个词impossible推断，此句应与上句形成转折关系：但是，要具体地说明到底会有哪些成果实际上是不可能的。因此选But。
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