单项选择题

A．They are less likely to run away.
B．It’’s easier for their masters to train them.
C．They are less likely to be shy with human beings.
D．It’’s easier for them to form a relationship with their masters.
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单项选择题
A．It’’s down the hall and to the right.B．It’’s up the hall and to the right.C．It’’s down the hall and to the left.D．It’’s up the hall and to the left.
A．It’’s down the hall and to the right.
B．It’’s up the hall and to the right.
C．It’’s down the hall and to the left.
D．It’’s up the hall and to the left.
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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.
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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