单项选择题


What does "POP" probably mean

A．places of presence
B．patterns of presence
C．probability of presence
D．period of presence
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单项选择题
One responsibility of a firefighter is to______.
A．install smoke detectors in residents" homes
B．check if smoke detectors are properly installed
C．speak to residents about how to prevent fires
D．develop fire safety programs for schools
单项选择题
Tony Huesman died from______.
A．heart failure
B．heart transplant
C．non-heart-related disease
D．pneumonia
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