【单选题】 The scanner reads the product information through a camera,
A．
| A. right |
B．
| B. wrong |
C．
| C. Doesn't say |
网考网参考答案：B
网考网解析：
第一段"The 'scanner',…is a small laser beam of light." 查看试题解析出处>>
【单选题】 The scanner reads the product information through a camera,
A．
| A. right |
| B. wrong |
| C. Doesn't say |
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