Amazon launched shopping carts(购物车) that track items as shoppers add them and automatically(自动地) charge them, allowing shoppers to avoid waiting in the checkout line. Amazon hopes to make the shopping experience    1     (efficient) than that of other physical stores.

Nevertheless, shoppers must have an Amazon account and a smart phone     2     (use) a Dash Cart. Each cart is equipped     3     cameras that can recognize items as they     4     (place) in the cart. The cart also has coupon (优惠券) scanner     5    applies any discount to the shopper's order. As shoppers add and remove items, a screen on the front of the cart shows how     6     they need to pay. When they're ready to leave ,shoppers exit through the store's Dash Cart passage.

"They don't have to learn any new shopping behavior, so they won't refuse     7    (shop) with the cart," said Dilip Kumar, Amazon's' vice president of physical retail and technology. "Once they sign in with their phone, they can     8     (simple) put the phone away and their normal way that they shop     9     (stay) the same. Besides, we have     10     (secure) measures to protect their personal information.”