4 The Delhi metro made commuting a comfortable experience for the people.5.Dr Laennec of France has invented the stethoscope in 1816.6.The

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The Delhi metro made commuting a comfortable experience for the people.5.Dr Laennec of France has invented the stethoscope in 1816.6.The invention of the stethoscope has actually happened accidentally.7.The state government built 7 new fly-overs recently to tackle the increasingtraffic. The officials hope these will save at least 30 minutes of travel time.​

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