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

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