2. 外语
  3. A．what you say B．a pair of sunglasses C．the listening machine D．a visual sensor E．who have disabilities F．l

A．what you say B．a pair of sunglasses C．the listening machine D．a visual sensor E．who have disabilities F．l

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问题 A．what you say   
B．a pair of sunglasses   
C．the listening machine   
D．a visual sensor     
E．who have disabilities   
F．living forever in a computer
Blind people will be able to see the world with______．
选项
答案D
解析 依据关键词blind people，可在文中第三段第四句话找到相关叙述：Blind people will use a visual sensor which will probably be built into a pair of sunglasses．This senor will describe to the person everything it sees．故选D。
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