单选题 The American idea of customer is to make each customer the center of the attention. People going shopping in America can expect to be treated with respect from the very beginning. When a customer gets to the store, they are treated as honored guests. Customers don"t usually find store clerks sitting around watching TV or playing cards. Instead the clerks greet them warmly and offer to help them find what they want. In many stores, the signs that label each department make shopping a breeze(容易的事情). Customers usually don"t have to ask how mush items cost, since prices are clearly marked.
When customers are ready to check out, they find the nearest and shortest checkout lane. But as Murphy"s Law would have it, whichever lane they get in, all the other lanes will move faster. Good stores open new checkout lanes when the lanes get too long. Some even offer express lanes for customers with 10 items or less. After they pay for their purchases, customers receive a smile and a warm "thank you" from the clerk. Many stores even allow customers to take their shopping carts out to the parking lot. That way, they don"t have to carry heavy bags out to the car.
In America, customer service continues long after the sale. Many products come with a money back guarantee. If there is a problem with the product, customers can take it back. The customer service representative will often allow them to exchange the item or return it for a full refund.

单选题 From the passage we know in America the principle of customer service is ______.

单选题 When customers enter the store in the U.S. A, they will ______.

单选题 Why do people in the U.S.A feel shopping a breeze?

单选题 According to Murphy"s Law. People feel ______.

单选题 If there is a problem with the product, the customer may ______.