听力原文:M: I was shocked when I heard you'd finished your research project a whole month
W: How I managed to do it is still a mystery to me.
Q: What does the woman mean?
(16)
A.She was not able to manage the project well.
B.She had managed to recover from the shock.
C.She was not sure about the mystery in the project.
D.She wasn't sure how she could finish it so early.