many people nowsday have to ...... false teeth when they are ...... the reason is that tooth ......increases . Doctors and dentists now know that sugar is the chief pulled of tooth decay . Eskimos'........,for example, started to decay when they began to ...... sweeter food
long ago doctors didn'tlike to ......people's teeth . Barbers and blacksmiths looked after people's teethand ..........them out when they decayed . Some people thought toothache was a punnishment from the gods.
dien cac tu : cause , wear , pulled , eat , treat, teeth ,decay, middle -age ,sugar , thought.
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Sinh Học lớp 12
