单项选择题

A．All the women tested except those volunteers.
B．Those who were generally active.
C．Those who had been more active than the average.
D．Those who had suffered backaches and other discomforts.
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单项选择题
A．Because she has experienced an extremely cold winter.B．Because she has not heard any discussion about it.C．Because she doesn’’t think things are getting worse.D．Because she knows that man has done a lot about it.
A．Because she has experienced an extremely cold winter.
B．Because she has not heard any discussion about it.
C．Because she doesn’’t think things are getting worse.
D．Because she knows that man has done a lot about it.
单项选择题
A．He made the first lightning rod.B．He invented electricity.C．He built the Empire State Building.D．He prevented lightning from hitting cars.
A．He made the first lightning rod.
B．He invented electricity.
C．He built the Empire State Building.
D．He prevented lightning from hitting cars.
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