参考答案

正确答案：C
[答案]C。[解析] 借助常识猜测C可能不正确。注意到备选项中出现的都是形容词的结构，关注它们在
文章中的出现，这样发现答案相关句：And Crystal Ear is super-sensitive and powerful, too．．．I couldn't believe how tiny it is．It is smaller than the tip of my little finger and it's almost invisible when worn．There are no wires no behind-the-ear device．“almost invisible：≠invisible”，所以判断C不正确。