单项选择题

A．They lived in large groups.
B．They used sand as insulation.
C．They kept fires burning constantly.
D．They faced their homes toward the south.
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单项选择题
A．A message from the outside world.B．A symbol of misfortune.C．A warning from the gods.D．A gift from the gods.
A．A message from the outside world.
B．A symbol of misfortune.
C．A warning from the gods.
D．A gift from the gods.
单项选择题
A．He has more than one child.B．His wife is a graduate student.C．He is a full-time student.D．He works at the university housing office.
A．He has more than one child.
B．His wife is a graduate student.
C．He is a full-time student.
D．He works at the university housing office.
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