a.

1. 心胸寬的，能接受新思想的；無先入之見的，無偏見的
   It is advisable to take an open-minded approach to new ideas.

   對新思想採取不存先入之見的態度是明智的。

   The well-known writer is open-minded enough to admit that not all his novels are first-rate.

   那位著名作家很虛心，承認他的小說並非全是上乘之作。