1. Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form.
(A) be generated if a portion of the capital would have been
(B) have been generated if a portion of the capital would have been
(C) be generated if a portion of the capital were
(D) be generated if a portion of the capital was（C）
(E) be generated if a portion of the capital had been
本题考虚拟语气,但我查了张道真的语法, 因为a portion of the capital为单数,所以后面也可跟was是否在商业英语中该用法不可以呢,否则D为什么错? | 
