单项选择题

What may help officials find the rescued children's parents

A．A national DNA database of genetic samples.
B．Household registers in various provinces.
C．Official website of the Ministry of Civil Affairs.
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Why can't the woman meet the man on Monday
A．She has a conference to attend.
B．She will have to work.
C．She will not be in town.
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What time does the flight leave for Madrid
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B．

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