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．Because they did not see the incident.B．Because the incident was ridiculous.C．Because the victim did not want any help.D．Because they were reluctant to do so.
A．Because they did not see the incident.
B．Because the incident was ridiculous.
C．Because the victim did not want any help.
D．Because they were reluctant to do so.
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