f) Write a few lines on Stethoscope.
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(1) stethoscope is a instrument used by doctors and other medical people. (2) It is used to measure peoples heartbeat and their breathing. It is placed on the area where the heart is or on the back.
(3)The modern stethoscope is made up of a Y-shaped flexible plastic tube. (4)An earpiece is attached to each end of the Y and a sound-detecting device at the other end.
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