D.use an app to wait in a checkout line

2.What can we infer from the third paragraph?

A.Amazon has dominated the physical bookstores.

B.Amazon can contribute to reducing the cost of staff.

C.Amazon manages to take the place of physical shopping.

D.Amazon can ignore each customer's advice in all situations.

3.The reason why Donald Trump repeatedly criticized Amazon Go is that Amazon Go .

A.would result in a political crisis

B.would threaten the career of cashiers

C.may result in a huge antitrust

D.is No.1 job killer in the list of criticisms

4.The main purpose of writing the passage is .

A.to introduce the Amazon Go store

B.to explain how Amazon Go works

C.to arouse people's interest in Amazon

D.to indicate Trump's attitude to Amazon

　　After much thought，I came up with a brilliant plan.I worked out a way for Rich to meet my mother and win him over.In fact，I arranged it so my mother would want to cook a meal especially for him.

　　Rich was not only not Chinese and he was a few years younger than I was.And unfortunately，he looked much younger with his curly red hair，smooth pale skin，and the splash of orange freckles(雀斑) across his nose.He was a bit on the short side，compactly built.In his dark business suits，he looked nice but easily forgettable，which was why I didn't notice him the first year we worked together at the firm.But my mother noticed everything.

　　"So what do you think of Rich？" I finally asked，holding my breath.

　　She tossed the eggplant in the hot oil，angry hissing sound."So many spots on his face，" she said.

　　"They are freckles.Freckles are good luck." I said a bit too heatedly in trying to raise my voice above the noise of the kitchen.

　　"Oh？" She said innocently.

　　"Yes，the more spots the better."

　　She considered this a moment and then smiled and spoke in Chinese，"When you were young，you got the chicken pox.So many spots，you had to stay home for ten days.So lucky，you thought."

I couldn't save Rich in the kitchen.And I couldn't save him later at the dinner table.