4．The Object Recognition Scanner can identify a product more quickly by ________．

　　A．the customer's voice

　　B．its shape and color

　　C．the customer's movement

　　D．the bar code on it

　　答案　B　

　　5．What can we infer from this text?

　　A．Checkout counters will disappear from supermarkets in future.

　　B．Buyers can use Scan It to go around the supermarket by themselves.

　　C．High­tech shopping carts will be widely used in malls and supermarkets.

　　D．The new technologies are only dreams that are impossible to come true.

　　答案　C　

　　A、B、C、D）中，选出最佳选项。

　　(2016·成都外国语学校模拟) “Developed and developing nations can learn from each other seeking a low­carbon economy，” a Chinese government official said in Shanghai yesterday.

　　“China doesn't lag developed nations in terms of energy saving and green economy，”

　　said Zhou Changyi, director of the energy saving department of the Ministry of Industry and Information Technology.

　　“While we can learn many aspects from developed nations, they also should learn something from us, such as water conservation，” Zhou said in a speech during the new Path of China's Industrialization forum at the ongoing China International Industry Fair 2009.

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