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Cosmic rays of various kinds come through the air from outer space, but enormous
Cosmic rays of various kinds come through the air from outer space, but enormous
游客
2025-03-28
18
管理
问题
Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are ______ off.
选项
A、avoided
B、excluded
C、screened
D、separated
答案
C
解析
C项screen off“隔开”。A项avoid“避免”;B项exclude“排除”;D项separate“使隔开”,其后不跟off。译文:宇宙中的各种光线从外层空间透过大气层,但是太阳的大量辐射能被大气层隔开。根据题意,应选C项。
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