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每日一练
Because electromagnetic waves travel at the speed of light, radio communication between astronauts on the moon and the Earth would be _____ by delays of only several seconds, whereas astronauts voyaging to the planets would face communications delays of minutes or even hours.
A. bolstered
B. hampered
C. enervated
D. facilitated
E. ravaged
正确答案
B
单词解释
bolstered 提振
hampered 阻碍了
enervated 衰弱的
facilitated 促进
ravaged 蹂躏
题目翻译
因为电磁波以光速旅行,宇航员在月球和地球之间的无线电通讯会受到只有几秒的延迟,而宇航员在行星间会面临数分钟甚至几小时的通信延迟。
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