单项选择题

A fundamental premise of a free-enterprise economic system is that all small businesses face difficult competition.

A．confront
B．mock
C．lose
D．appreciate
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单项选择题
A dream usually consists of visual images that tell a story.
A．graphics
B．vapors
C．pictures
D．fantasies
单项选择题
Before the invention of photoengraving, steel and copperplate engraving served as the principal means of reproducing illustrations.
A．visions
B．pictures
C．advertisements
D．pages
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