Part 1: Listen and answer questions 1-2
ADAM: OK Rosie, shall we try to get some ideas together for our presentation on diet and obesity?
ROSIE: Sure.
ADAM: I can talk about the experiment I did to see if people can tell the difference between real sugar and artificial sweeteners.
ROSIE: Where you have people drinks with either sugar or artificial sweeteners and they had to say which they thought it was?
ADAM: Yeah. It took me ages to decide exactly how I’d organise it, especially how I could make sure that people didn’t know which drink I was giving them. It was hard to keep track of it all, especially as I had so many people doing it – I had to make sure I kept a proper record of what each person had had.