单项选择题

In a time of social reform, people's state of mind tends to keep ______ with the rapid changes of society.

A．step
B．progress
C．pace
D．touch
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单项选择题
Generous public funding of basic science would ______ considerable benefits for the country's health, wealth and security.
A．lead to
B．result from
C．lie in
D．settle down
单项选择题
The shy girl felt ______ and uncomfortable when she could not answer her teacher's question.
A．amazed
B．awkward
C．curious
D．amused
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