:2019人教版高考英语一轮复习必修23Unit3知能演练轻松闯关（有答案）

 
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(2018•长郡中学新高三实验班选拔考试)Four years ago，we asked ourselves：What if we  could create a shopping experience with no waiting in line and no checkout? Or could we create a physical store where customers could simply take what they want and go? Our answer to those questions is Amazon Go，where you could experience the idea of “just walk out shopping”．
Amazon Go is a new kind of store with no checkout required.We created the world’s most advanced shopping technology，so you never have to wait in line.With our “just walk out shopping” experience，simply use the Amazon Go app to enter the store，take the products you want，and go！No lines，no checkout.
Our checkout­free shopping experience is made possible by the same types of technologies used in self­driving cars：computer vision，sensor fusion，and deep learning.Our “just walk out technology” automatically detects when products are taken from or returned to the shelves and  keeps track of them in yo