听力原文:M: Only one student in my class got above 90 points in the test. How about your c
W: About 6 or 7 of them. But there are still some students who failed.
Q: What can we infer from the conversation?
(16)
A.The result is what she had expected.
B.The test is not well designed.
C.Too few students got high marks.
D.Differences between students' grades are big.