单项选择题

Web pages are viewed with（）.

A.application
B.browser
C.0S
D.DBMS

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单项选择题

When you move the mouse pointer to a（），the pointer’s shape usually changes to a pointing hand.

A.hyperlink
B.selected text
C.selected graphic
D.web page

单项选择题

（）is a copy of a file for use in the event of failure or loss of the original.

A.second storage
B.buffer
C.backup
D.database

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