1) The colder the room you sleep in, the more possible it is for you to a) sleep longer b) wake up more tired c) have a bad dream 2) __________ one third of people can see without glasses. a) Less than b) More than c) Exactly 3) People lose _______ hairs from their head every day. a) 20–60 b) 40–80 c) 60–100 4) People are about ______ centimeter(s) taller in the morning. a) half a  b) one c) two 5) __________ hundred million cells die in your body every minute. a) Two b) Three c) Four 6) Your left lung is _______ your right lung. a) smaller than b) bigger than c) the same size as 7) Your blood is _____ percent your body weight. a) 7 b) 11 c) 15 8) A human heart beats more than _______ billion times in a normal lifetime. a) 3 b) 5 c) 7 9) There are __________ bones in each of your feet. a) 6 b) 16 c) 26 10) Your ______ are always the same size from the moment you are born. a) feet b) eyes c) ears

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