A flight to other solar systems will be made more possible by ______. It can be inferred from Paragraph 2 that human society wi

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问题 A flight to other solar systems will be made more possible by ______.
It can be inferred from Paragraph 2 that human society will become increasingly ______.

选项 A、worried about life on other planets.
B、dependent on space tourism.
C、accustomed to long-distance flights.
D、associated with space exploration.

答案D

解析 从最后一段最后一句话“... but the 21st century will see a continuation of efforts to transform humanity into a spacefaring species.”可知,人类一直进行着太空探索。这与D项答案所表达的意思一致。
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