单项选择题

A．Washington
B．. Baghdad.
C．Pennsylvania.
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单项选择题
A．Because some bacteria are drug-resistant.B． Because the infection is untreatable.C．Because some bacteria can be spread by physical contact.
A．Because some bacteria are drug-resistant.
B． Because the infection is untreatable.
C．Because some bacteria can be spread by physical contact.
单项选择题
A．In the USA. B．In Uganda. C． In the Sudan.
A．In the USA.
B．In Uganda.
C． In the Sudan.
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