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It is the firm belief of astronomers【C1】______there are living creatures on
It is the firm belief of astronomers【C1】______there are living creatures on
游客
2023-07-28
30
管理
问题
It is the firm belief of astronomers【C1】______there are living creatures on other planets. It is also their ear- nest wish that some day【C2】______may be made with such living creatures【C3】______sending messages in the form of radio signals. The【C4】______of communicating with people on other planets may one day come【C5】______since radio telescopes【C6】______.
Scientific project of various kinds are now being launched to【C7】______signals or to receive signals from distant planets. The question now【C8】______: What sort of message【C9】______so that it could be understood? To send a message in any language would be impractical【C10】______it would【C11】______not be intelligible.
It is the opinion of scientists that a signal in the【C12】______of a simple arithmetic sequence might be understood.
Scientists think that pictures might also be understood, so it【C13】______a good idea to send pictures of the people【C14】______our planet. Pictures of domestic animals together with【C15】______crops we【C16】______for our food might also be【C17】______. Pictures of houses and buildings might【C18】______further information about our life and society.
As time goes on, TV pictures might be sent, which would【C19】______acquaint the beings on other planets【C20】______life and the level of civilization on our planet. [br] 【C3】
选项
A、from
B、to
C、with
D、by
答案
D
解析
此题为考查介词用法的语法类题目。上下文指出:通过发射信号与外星的生物进行联系;只有介词by表示通过的意思。
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