听力原文:M: Annie, who's that new girl in your dormitory? I'm sure I recognize her from so
W: Of course! She's my sister Amy, you used to be in the same English class at high school,
Q: What can be inferred from this conversation?
(15)
A.He knows her from their elementary school science class.
B.She know his from computer science class.
C.They went to the same high school.
D.She is his sister.