烧结点火的目的,在于将混合料中的燃烧点燃,向料层提供(),借抽风的作用继续(),则自上而下烧结。
参考答案:热量;燃烧
You _________ sleeping on the train.[ ]
A. was
B. were
C. is
孟子将朝王。(《孟子•公孙丑下》)