书名：New Toeic新制阅读超高分
页数：p.142
题目：121.
The project development team is partially responsible for the selectio
n and _____ of potential building sites.
(A) appraisal
(B) appraises
(C) appraise
(D) appraised
疑问：为什么是A而不是B
是因为of前面不能放动词吗？