听力原文:W: I think we should take a break. We've been working here for 2 hours.M: I'd be
听力原文:W: I think we should take a break. We've been working here for 2 hours.
M: I'd be glad to. I've been working looking through this microscope for 2 days.
Q: Why are they going to stop working?
(14)
A.They have been working at the telescope for two days.
B.They can't find the microscope.
C.They've been working in the laboratory for two hours.
D.They can't fix the microphone.