单项选择题

The company used so much coal that it has a train to ______ the delivery process.

A．transmit
B．transport
C．facilitate
D．diminish
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单项选择题
The hum of conversation ______ as the chairman mounted the rostrum.
A．died out
B．died off
C．died of
D．died away
单项选择题
The girl ______ when she couldn't answer the question in the presence of all her classmates.
A．flourished
B．flattered
C．flushed
D．fluttered
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