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1.Which university did the research?
a) Sydney
b) Tokyo
c) Chicago
d) London
2.How many reasons did the university find for being hungrier?
a) 1
b) 2
c) 3
d) 4
3.What does sleeplessness release in the brain?
a) chemicals
b) calories
c) electricity
d) hungry
4.What kind of food do we want to eat if we haven't had enough sleep?
a) sushi
b) high-calorie food
c) baby food
d) fruit
5.Who craved crisps?
a) the over-60s
b) crisp lovers
c) teens
d) sleep-deprived people
6.How many volunteers took part in the survey?
a) 12
b) 14
c) 22
d) 28
7.On average, how long did people sleep if they spent 4.5 hours in bed?
a) 4.2 hours
b) 4.5 hours
c) 4 hours
d) 3.8 hours
8.How many meals a day did volunteers eat in the first situation?
a) 1
b) 2
c) 3
d) 4
9.What were sleep-deprived volunteers unable to resist?
a) apples
b) naps
c) beds
d) snacks
10.How long after a meal did sleep-deprived volunteers have snacks?
a) 1½ hours
b) an hour
c) two hours
d) 2½ hours
