单选题
In education there should be a good ______ among the branches of knowledge that contribute to effective thinking and wise judgment.
【正确答案】
B
【答案解析】[试题分析] 本题为名词词义辨析题。
[详细解答] assignment意为“任务，职责”；combination意为“结合，联合”，常与介词with或between．．．and连用；distribution意为“分配，分布”；balance意为“平衡”，可与介词among搭配。根据题意和搭配，选项[B]balance为正确答案。