Listening audioscript

part about how fast they can move. 
(Professor) 
It is really impressive; in the video it shows several squid attacking their 
prey and they reach speeds of up to nine kilometers per hour, which 
doesn’t really sound that fast, but you have to remember that the water 
pressure is pretty strong deep in the ocean. 
(Student)
Well, that was one thing that I wanted to ask you about. The textbook 
said that this kind of squid was kind of a lazy swimmer, you know, kind of 
drifting around not actively swimming. Why is that? 
(Professor) 
Yes, that’s right; the textbook does characterize this type of giant squid 
as an inactive swimmer. You see, in the past, marine biologists would 
find the remains of these giant squid in the stomachs of sperm whales, 
and the squid’s flesh was flabby, kind of soft and lacking muscle. This led 
marine biologists to surmise that this kind of squid just floated in the 
water. 
(Student)
I guess I can kind of see how they could come to that conclusion based 
only on that information. 
(Professor) 
But another interesting issue presented by the researchers is that not 
only does the squid make bright flashes of light that last about one and a 
half seconds and are used to dazzle prey before the squid attacks, but 
the flash might be a way of measuring how far away the prey is. 
(Student)
Really? The journal article didn’t mention anything about that. 
(Professor)
Well, a lot more research needs to be done on that topic. 
18. WHY DOES THE STUDENT GO TO SEE THE PROFESSOR? 
19. WHAT INFORMATION IN THE ARTICLE DID THE STUDENT FIND
SURPRISING? 
20. ACCORDING TO THE PROFESSOR, WHY DID SOME MARINE BIOLOGISTS 
ASSUME THAT THE PARTICULAR SPECIES OF SQUID DISCUSSED IN THE 
CONVERSATION WAS AN INACTIVE SWIMMER?