注意：此页面搜索的是所有试题
题目内容
（河南财经政法大学-会计学-大学英语4）
[单选题,7.1分] The _______ of human knowledge are being pushed further.
A.boundaries
B.limits
C.borders
D.edges
A.boundaries
B.limits
C.borders
D.edges
参考答案