The British used radio waves because they ________.A.were more exact than sound wavesB.could not be detectedC.could penetrate fog and cloudsD.were easier to use than sound waves
The British used radio waves because they ________.
A、were more exact than sound waves
B、could not be detected
C、could penetrate fog and clouds
D、were easier to use than sound waves
发布时间：2025-10-17 11:26:21
