单项选择题

A．The bacteria would be killed by the human immune system.
B．The bacteria would die if brought to the surface.
C．Many antidotes and remedies are available.
D．Drilling operations are always closely monitored.
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单项选择题
A．They help to cure anxiety.B．They help patients to gain insight into the cause of anxiety.C．They help to control anxiety.D．They help patients to work efficiently.
A．They help to cure anxiety.
B．They help patients to gain insight into the cause of anxiety.
C．They help to control anxiety.
D．They help patients to work efficiently.
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