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A. when it is absorbed by matter B. when it is cloudy C. because they can pass through solid objects D. when the sunrays are fie
A. when it is absorbed by matter B. when it is cloudy C. because they can pass through solid objects D. when the sunrays are fie
admin
2013-08-28
106
问题
A. when it is absorbed by matter
B. when it is cloudy
C. because they can pass through solid objects
D. when the sunrays are fierce
E. when a change in the nucleus of an atom takes place
F. when electron rearrangement takes place
X-rays and gamma rays can be used to detect and treat cancer______.
选项
答案
C
解析
根据题干线索词X-rays and gamma rays可将原文定位至第三段倒数二、三句X—rays and gamma rays have so much energy that they travel right through solidobjects.They can be used to detect and treat cancer.X射线和伽马射线之所以能够用于检测和治疗癌症,是因为它们能够直接贯穿实体物。显然,C为原文复现,故C为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/jaLd777K
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