The British used radio waves because they______. A．were more exact than sound wavesB．could not be discoveredC．could pass through 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 discovered
C、could pass through fog and clouds
D、were easier to use than sound waves
发布时间：2025-11-09 06:51:46
