确定时间定额应该根据本企业的生产技术条件，使所有工人都能够达到的水平。( )
参考答案：错
-How many chapters does the book have?
-It ____ three chapters.
A．consists with
B．consists of
C．including
D．is contained
“跃马过檀溪”时刘备骑的是什么马？请简述这匹马的来历。
