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He indicated a semicircle with a______of about thirty miles.A、radiusB、radiumC、
He indicated a semicircle with a______of about thirty miles.A、radiusB、radiumC、
游客
2025-01-30
24
管理
问题
He indicated a semicircle with a______of about thirty miles.
选项
A、radius
B、radium
C、radiation
D、radar
答案
A
解析
这句话的意思是:他标示出了一个半径大约为30英里的半圆形。radius意为“半径、范围”;radium指化学元素镭;radiation意为“辐射、发射”;radar意为“雷达、无线电探测器”。根据句意,选项A为正确答案。
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