单项选择题

A．Examine whether these children were healthy.
B．Find out whether their mothers had smoked.
C．Find why these children suffered breathing problems and lung disease.
D．Look into the effect that mother’s smoking had on their children.
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单项选择题
A．She has no time to make new friends.B．She doesn’t like her new school.C．She has adapted easily to her new school.D．She feels lonely now.
A．She has no time to make new friends.
B．She doesn’t like her new school.
C．She has adapted easily to her new school.
D．She feels lonely now.
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