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Some crystals emit visible light when ______ by ionizing particles.
Some crystals emit visible light when ______ by ionizing particles.
admin
2011-01-26
32
问题
Some crystals emit visible light when ______ by ionizing particles.
选项
A、burned
B、struck
C、excited
D、inspired
答案
B
解析
句意: 一些水晶在被电离粒子撞击后会发出可见光。strike撞击,碰撞。burn灼烧。excite激发,引起。inspire鼓舞,激励。
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考博英语
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