Questions 1-10

Task information: Sentence Completion
1  19  A (20 studies),  20  B (three factors),
 
21  A (doctors),  22  B (young children)
Questions 19–22
2  19  blood pressure  20  obesity crisis 
 
21  flu vaccine  22  aggressive behaviour
Task information: 5-option multiple-choice
1  1 A ii  B iii  C i
  2 A ii  B i  C iii
2  Questions 23 and 24
D/E (in either order)
D: Paragraph F says, ‘We can also systematically 
measure [= record] our sleep by using personal tracking 
devices.’
E: Paragraph F says ‘Firstly, we could think about getting 
ready for sleep in the same way we prepare for the end 
of a workout – say, on a spin bike. “People use alarms to 
wake up,” Walker says. “So why don’t we have a bedtime 
alarm [= at a set time of day] to tell us we’ve got half an 
hour, that we should start cycling down? [= reducing 
activity].”’  
Distraction 
A Although melatonin is a hormone that 
occurs naturally in the body, and is also sold by chemists 
to aid sleep, Walker does not specifically recommend 
buying and using it as a product; B The text says ‘While 
some researchers recommend banning digital devices 
[= bright screens] from the bedroom . . .’, but does not 
say if Walker agrees with this idea. We are only told that 
Walker believes that technology could in fact be useful 
in helping people to sleep better; C We are only told 
that companies [= employers] reward staff by giving 
them time off work if they can show they are sleeping 
properly. Walker doesn’t suggest that staff should ask to 
start work at a later time in the morning.