2. 外语
  3. Life, as we know it, most likely would exist on Mars near its ______. "Speculation is science’s very life-blood" means that sci

Life, as we know it, most likely would exist on Mars near its ______. "Speculation is science’s very life-blood" means that sci

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问题 Life, as we know it, most likely would exist on Mars near its ______.
"Speculation is science’s very life-blood" means that scientists ______.
选项 A、are gamblers on science
B、must form opinions about the data they gather
C、must concern themselves with provable facts
D、must understand all sciences
答案B
解析 “speculation”在本文中的意思是“推测”，并非“投机”，所以科学家们不是科学方面的赌徒。原文第二段说明，仅仅积累事实只是科学的原始形式，我们还必须从这些事实中总结出自己的观点。
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