Objects in a gravitational field experience a slowing down of time, called time dilation.

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问题 Objects in a gravitational field experience a slowing down of time, called time dilation.

选项 A、expansion
B、diminishment
C、duration
D、decrease

答案A

解析 这句话的意思是:物体在引力场所经历的时间减慢,叫作时间膨胀。画线词dilation意为“膨胀”;expansion意为“扩大、扩张、膨胀”;diminishment意为“减小、削弱”;duration意为“持续、期间”;decrease意为“减少、减小”。根据题意,答案为A。
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