49. ___
A. Only wealthy families had them.
B. They were important to the ice industry.
C. They were built mostly on the east coast.
D. They are no longer in common use.
Audio 3 What point does the lecturer make about whales and sound pollution?___
A. Increased sound pollution means whales 'talk' more at night than during the day.
B. Research shows whales communicate to warn each other of sound pollution.
C. Whales may not survive in some situations where there is sound pollution.
D. Sound pollution from submarines has little impact on whales and other creatures.
Audio 4 What must the students do before next Wednesday?___
A. email the slides for their presentation to the tutor
B. make enough copies of their handouts
C. post an outline of their talk to the course website
D. practise giving their presentation
Audio 2This week we're going to be continuing our discussion of women in society. Last week we looked at a number of 1__________ ____ relating to women in education. If you remember, we discussed women both at school and at university. Today we're going to be considering the 2_________ ___ that women play in the workplace. Again, we'll start by taking a historical perspective, and inevitably you'll find that many of the same 3_________ ____ that impacted on women in education also had a major influence on their working lives. In the second half of the lecture, I'll concentrate on the situation in 4_________ ___ today, and I'll invite you to suggest how you think things are likely to develop over the next 5_________ ____.OK, so let 's get started.