单项选择题

Section A Questions 11 to 18 are based on the conversation you have just heard.

A．The woman is complaining about Mary.
B．The man has been helping Mary with her studies.
C．Mary did better than expected in the team.
D．Mary should consider dropping out of the team.
<上一题 目录 下一题>
热门 试题

单项选择题
What can we infer from the passage
A．We have enough written record of our ancestors to prove the identity.
B．Many American slaves got to know who their ancestors were though DNA.
C．An adopted child generally lacks enough information to prove his identity.
D．Molecular genealogy can be used to prove a relationship between individuals.
单项选择题
If two men suspected for some reason they have a common ancestor,______.
A．we can decide according to their family tree
B．we can find the truth from their genetic markers
C．we can compare the differences in their Y chromosome
D．we can look for written records to prove their relationship
相关试题