It's a fine day. Shall we go out for a walk? [ ]
A. great
B. windy
C. sunny
D. well
答案:C
You are saying that everyone should be equal, and this is ___ I disagree.
A.why
B.where
C.what
D.How
图为农用扬场机的示意图。谷物脱粒后,谷粒、糠皮及少量碎石的混合物在快速转动的轮形和皮带占的带动下被抛出,谷粒、糠皮、碎石落地的远近不同,从而形成1、2、3三堆,达到分离的目的。其中1是______________,2是______________,从能量的角度看,它们在运动过程中能够分离,是因为_________________。