某学生使用托盘天平称食盐时，错误地把食盐放在右托盘里，把砝码放在左托盘里，称得食盐的质量为15．5g(1g以下只能用游码)，如果按正确的放法，食盐的质量应为[ ]

A．15．5g

B．14．5g

C．15．0g

D．14．0g

情景交际。

A. I work in China.

B. Where are you from?

C. Can you speak Chinese?

D. I drive a bus.

E. Do you like working in China?

A: Excuse me, Mr Black. 1.______

B: I'm from New York. That's in America.

A: Oh, great! Where do you work now?

B: 2.______

A: What do you do?

B: I'm a driver. 3.______

A: Do you have any children?

B: Yes, I have a son and a daughter.

A:  4.______

B: Yes, I do. The Chinese people are very friendly.

A: 5.______

B: Yes , but only a little.