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Gravitational waves—ripples in the geometry of space-time—are analogous to electromagnetic waves. The challenge in trying to obs
Gravitational waves—ripples in the geometry of space-time—are analogous to electromagnetic waves. The challenge in trying to obs
admin
2022-11-11
35
问题
Gravitational waves—ripples in the geometry of space-time—are analogous to electromagnetic waves. The challenge in trying to observe these waves directly is that they are extremely weak. To make waves large enough to be (i)________, the most (ii)________events in the universe are required: supernova explosions, the formation of black holes, or the collision of stars. Even so, the effects are (iii)________. The geometry changes so little that a distance of several kilometers changes by less than the diameter of a proton.
Blank (i) Blank (ii) Blank (iii)
A. detectable D. obvious G. masked
B. usable E. subtle H. disastrous
C. explicable F. violent I. minuscule
选项
答案
A,F,I
解析
首句说引力波________空间,时间几何形态的波动________同电磁波相似。试图直接观察它们的挑战是它们相当微弱(extremely weak)。先看前两空:要想使得引力波大到足以被(i)________,需要宇宙中最(ii)________的事件发生。空格(i)同义对应于observe。选项中体现“信号不弱”的是A项detectable(可察觉的)。空格(ii)的逻辑连接标志是冒号,表示前后同义重复。冒号后说超新星爆炸、黑洞形成、星体碰撞。因此,空格(ii)应该表达与“爆炸”相关的含义,选项E violent(猛烈的)符合。最后看空格(iii),即使那样violent,这种效果也是________的。空格(iii)与前面的weak同义重复,与violent反义对应,I项minuscule(微弱的)符合。
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本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
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