单项选择题

Everyone agrees that the entire population is at risk, but so far no one has______ a practical defense against the disease.

A．came up with
B．got along with
C．put up with
D．caught up with
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单项选择题
The old woman was______ from the intensive care unit last week and transferred to a general ward.
A．dismissed
B．discharged
C．discarded
D．distinguished
单项选择题
The bus that______ outside the inn would. soon take the visitors downtown.
A．held back
B．set forth
C．got down
D．pulled up
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