单项选择题

When______ scientists first suggested the possibility that one person should speak directly over a long distance, few people took them seriously.

A．imaginable
B．imaginative
C．imaginary
D．imagined
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单项选择题
Since mixtures are composed of two or more pure substances, each______ changes state at a different temperature.
A．company
B．companion
C．compound
D．component
单项选择题
I think she hurt my feelings______ rather than by accident as she claimed.
A．virtually
B．literally
C．deliberately
D．appropriately
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