单项选择题

A．Her taking improper sleeping medications.
B．Her having a poor digestion.
C．Her having unusual stress lately.
D．Her having insufficient physical activities.
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单项选择题
A．Separate houses were built for storing ice.B．Double walls were built in icehouses to keep cool.C．Blocks of ice were packed with hay in icehouses.D．Ice was put into icehouses in winter.
A．Separate houses were built for storing ice.
B．Double walls were built in icehouses to keep cool.
C．Blocks of ice were packed with hay in icehouses.
D．Ice was put into icehouses in winter.
单项选择题
A．Friends.B．Two police officers.C．A police officer and an investigator.D．A police officer and a program hostess.
A．Friends.
B．Two police officers.
C．A police officer and an investigator.
D．A police officer and a program hostess.
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