阅读理解Task2When Americans eat out, they usually follow certain customs. To get a waiter or waitress’s attention, they may raise their hands to catch his or her eye, or say “Waiter” or “Waitress.” In the U.S., many restaurant workers are poorly paid, so they depend on tips. Most customers tip waiters and waitresses 15 percent of the bill. The tip isn’t usually written on the bill, so you have to add it yourself. The customer usually leaves the tip on the table.Some restaurants serve more food than people can eat at one time. When that happens, many customers ask for a doggie bag to take the leftover food home. Some people may actually give the food to their dogs, but most often they eat it themselves at another time. (1) (单选题)In order to get a waiter’s attention Americans usually raise their hands or say ________.
选项：

A: “Come here”
B: “Menu”
C: “Waiter”
D: “Hello”