WHEN ARE YOU AN ADULT?
　　Many countries have ceremonies to celebrate their young people becoming adults. However, some countries do not. Instead, young people think of themselves as adults when they can do “adults” things. But when do you become an adult in the U.S.A.? Let’s look at what some American teenagers say.
　　Sam: I think you are an adult at 18. That’s when you can vote. You can help to choose who runs the state and the whole country. That’s grown up! My grandfather couldn’t vote until he was 21. They only change it to 18 in 1971. I guess they think we are more responsible at 18 now.
　　Jenny: I think it’s hard to choose. I get to drive a car at 16, don’t I? That’s a serious responsibility. When you have a driver’s license you show it to people to prove your age for all kinds of things. So that must be the age when you change from a young person to an adult. Because you have to prove you are that age and not a kid.
　　Suzie: I think there is something crazy about American laws about when young people can do things. So I can vote at 18 and drive at 16. So you would think that 18 is grown up, even if 16 isn’t. But then I can’t drink alcohol until I’m 21! If I’m an adult at 21, how can people stop me buying a can of beer in a shop?
　　vote: 选举
　　43. Which of the following is TRUE?
　　A. You can’t vote until 21.
　　B. You can drive a car at 18.
　　C. You can’t drink until 16.
　　D. You can buy beers before 21.

　　44. Sam thinks “grown up” means __________.
　　A. you can help to choose the president and governors
　　B. you can drink alcohol
　　C. you are responsible for all things you do
　　D. you can drive a car