单项选择题

It is important to have the（）positionde correctly before you type characters.

A．cursor
B．line
C．light
D．dot

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单项选择题
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 botton
单项选择题
E-Mail is a fast ,cheap and convnient way to （）messages locally and internationally.

A．give and get
B．put and get
C．send and receive
D．get in and get out
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