问题补充：
No matter what substance it may be, it is atom.
A. resulted from
B. formed
C. made up of
D. made up with
答案：
A. resulted from
B. formed
(答案→)C. made up of
D. made up with
解析：原句意思是，不管它是什么物质，它构成了原子。result from意思是由 …… 引起form 形成，这里使用了被动语态，所以排除 B ，be made up of 构成made up with 与 ……和解。故选C，最符合题意。
