An atom ______ three kind of particles.
A.makes up
B.is made of
C.is consisted of
D.is composed of
An atom _ three kind of particles. (kind 应该改为 kinds )
A.makes up (意思很多,查词典可知。此处不适合。)
B.is made of (错误,意思是“用 ...... 制造”)
C.is consisted of (错误,因为 consist是不及物动词,无被动语态形式,)
D.is composed of (正确,意思是“由......构成”)