问题
选择题
Thomas Edison considered genius to be _____ one per cent inspiration and ninety-nine percent perspiration.
A．composed of
B．constituted in
C．consisted of
D．comprised in
答案
答案：A
composed of. [注释]be composed of由......组成。consist of由......组成，是不及物动词，不能用被动语态，故不合题意;而B，D为及物动词不需要用介词。