Without facts , a person can’t form a correct opinion , for he needs to have act
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Without facts , a person can’t form a correct opinion , for he needs to have actual knowledge _____ his thinking .
A．which to be based on B．on which to base
C．which to be based D．which to base
试题答案
B
解析:
本题可采取增元法。把句子的后半部分补全为：for he needs to have actual knowledge on which he bases his thinking . base on：建立……基础上。如Parents owe their children a set of solid values around which to build their lives。故选B。