2. 外语
  3. Contrary to the old warning that time waits for no one, time slows down when you are on the move. It also slows down more as you

Contrary to the old warning that time waits for no one, time slows down when you are on the move. It also slows down more as you

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问题     Contrary to the old warning that time waits for no one, time slows down when you are on the move. It also slows down more as you move faster, which means astronauts (宇航员) someday may【B1】______ so long in space that they would return to an Earth of the【B2】______future. If you could move at the speed of light, your time would stand still. If you could move faster than light, your time would move【B3】______.
    Although no form of matter yet【B4】______moves as fast as or faster than light, 【B5】______experiments have already confirmed that accelerated【B6】______ causes a traveler’s time to be stretched. Albert Einstein【B7】______this in 1905, when he【B8】______the concept of relative time as part of his Special Theory of Relativity. A search is now under way to confirm the suspected existence of particles of matter【B9】______.
    An obsession (沉迷) with time—saving, gaining, wasting, losing, and mastering it—【B10】______. Humanity also has been obsessed with trying to capture the meaning of time. Einstein 【B11】______. Thus, time and time’s relativity are measurable by any hourglass, alarm clock, or an atomic clock that can measure a billionth of a second.
【B11】
选项
答案used a definition of time for experimental purposes, as that which is measured by a clock
解析 used a definition of time for experimental purposes, which is measured by a clock
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