An atom is composed of three kind of particles.

参考译文：原子是由3种粒子构成。

A.makes up (A make up B 意思A组成B,被动 B be made up of A)

B.is made of( A be made of B 意思，A由B制成）

C.is consisted of（A consist of B 意思A 由B组成）

D.is composed of（A be composed of B 意思A由B组成/构成）

根据以上结构：A,B和C的结构表达都是错误，只有D为正确答案

be composed of 由..组成

Water is composed of hydrogen and oxygen. 

水由氢和氧组成。

The legal system is composed of people, and people make mistakes. 

法律体制由人组成，而人是会犯错误的。

The force would be composed of troops from NATO countries. 
该部队将由北约各国的军队组成。