Knowledge then is the _____ condition of expansion of mind.

问题描述:

Knowledge then is the _____ condition of expansion of mind.
a、indigestible
b、indispensable
c、 indissoluble
d、indisputable
知识改变命运、、、谢啦!

a.消化不良的 b.必不可少的 c.不能辨别的 d.不容置疑的
根据句意选b