单项选择题

The first use of umbrella was as ______ .

A．protection against rain
B．a shade against the sun
C．a symbol of power
D．a symbol of honor
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单项选择题
We are living in an age ______ many things are done on computer.
A．which
B．that
C．whose
D．when
单项选择题
I could be ______ by telephone. Why didn't call me
A．touched
B．told
C．asked
D．reached
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