问题补充:
Knowledge and learning are important if we want to be successful, but they may also our thinking.
A. direct
B. limit
C. change
D. improve
答案:
A. direct
B. limit
C. change
D. improve
解析:动词词义辨析。A指导;B限制;C改变;D改善;句意:如果我们想要成功,知识和学习很重要,但是他们也会限制我们的思维。根据句意说明B正确。