快速查题-第九章 Facing Life’s Challenges试题
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LED technology is widely used in various fields all over the world.（）
The key components of a computer mouse are the two LED.（）
When an ordinary computer mouse get dirty, it has to be replaced with a new one.（）
The most durable computer mice on sale are the IBM ones.（）
The optical mouse is superior to the basic in that the former has no moving parts.（）