单项选择题

When television was first (introduced), the extent to (that) it would (affect) society could not (have been foreseen).

A．introduced
B．that
C．affect
D．have been foreseen
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单项选择题
(So great) (was) the influence of Thomas Paine (on) his own time that John Adams suggested that the era (was called) The Age of Paine .
A．So great
B．was
C．on
D．was called
单项选择题
(Writing) in a clear and terse style, the book (describes) the (author's) childhood experiences in a small town (just before) the outbreak of the Civil War.
A．Writing
B．describes
C．author's
D．just before
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