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A.One son and one daughter.
B.Two sons and two daughters.
C.One son and two daughters.
D.Two sons and two daughters.
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单项选择题A.The senate in Britain is older.B.There are more senate members.C.The senate in US is more practical.D.The senate in Britain is not elected.

A.The senate in Britain is older.
B.There are more senate members.
C.The senate in US is more practical.
D.The senate in Britain is not elected.

单项选择题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.