The airplane had a good _____ of newspapers, magazines, television programs, food and drinks. The meal even included a serving of Hagen-Dazs ice cream.

A．offer

B．number

C．supply

D．amount

成功沟通要求语言表达对于双方都具有同一含义,这可称之为()。

A．一致性原则

B．连贯性原则

C．明确性原则

D．信赖性原则