在成本核算中，必须正确核算待摊费用和预提费用，这是贯彻了会计核算的（）原则。
A．历史成本
B．权责发生制
C．配比
D．重要性
参考答案：B
根据对话语境和所给首字母，完成对话
A: What's your favourite sport?
B: I like p 1 table tennis. Do you like it?
A: Yes,but I can't play w 2 .
B: Would you like to play w 3 me tomorrow morning?
A: Certainly. But I am a 4 I can't play as well as you.
B: Never m 5 . Anyway you know practice makes perfect.
A: Well,how a 6 at eight o'clock?
B: OK.You won't f 7 to bring a ball, will you?
A: Of c 8 not.
B: So long! .
A: Bye.
牛奶安全HACCP关键点控制。
