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The invisible rays of the ______beyond the violet end are called the ultraviolet
The invisible rays of the ______beyond the violet end are called the ultraviolet
游客
2025-05-04
37
管理
问题
The invisible rays of the ______beyond the violet end are called the ultraviolet rays.
选项
A、speculation
B、spectrum
C、sleet
D、range
答案
B
解析
B项spectrum“光谱”符合题意。其他三项都与题意不符:speculation猜测,投机;sleet冰雨;range范围。
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