【单选题】In this section you will hear ONE interview. The interview will be divided into TWO parts. At the end of each part, five questions will be asked about what was said. Both the interview and the questio...
A.
A . Because the gene has been p as sed down before they died
B.
Because their families and relatives had similar gene
C.
C . Because the gene had to p r ote ct people in the p as t an today
D.
Because the gene has been passed down by s ki pped g e nerati on