单项选择题

The scientists were _______ as they had found not one but three viruses.

A．advanced
B．excited
C．amazing
D．repenting
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单项选择题
The tour of our country by the foreign visitors _______ on the Great Wall and other historical spots.
A．confirmed
B．focused
C．instructed
D．hampered
单项选择题
Her face brightened up when she saw her long-awaited friend _______.
A．turning off
B．turning away
C．turning in
D．turning up
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