题目内容:
Header and footer are strings of text that are placed at the ______ of each page of a document.
A.left or right
B.up or down
C.above or below
D.top or bottom
参考答案:
Header and footer are strings of text that are placed at the ______ of each page of a document.
A.left or right
B.up or down
C.above or below
D.top or bottom