—Did you meet Jane yet—Yes, it was ______ I surfed the Internet last week.

A．offering assistance in working out genealogy-related problems
B．solving many issues without relying on traditional written records
C．providing a pedigree chart of at least four generations in the world
D．confirming the assumption that all individuals are of the same origin

A．We are a walking, living, breathing record of our ancestors.
B．Many American slaves did not know who their ancestors were.
C．An adopted child generally lacks enough information to prove his identity.
D．Molecular genealogy can be used to prove a relationship between individuals.