With the development of society,many jobs are disappearing gradually.Many products are made by machines instead of humans as a result of which people who need to make something by hands for a living had to change their jobs.People who sell tea water is a good example.There were people who sell tea water to make a living,however,with all kinds of drinks,hot and cold,available in the supermarkets,this kind of job has to disappear in the world. Whats more,many jobs are disappeared because of the improvement of our lives as well as the changes of our lifestyles.For example,there wont be a pen repairer waiting for someone who broke his or her pen.Today we prefer buying a new one rather than repairing the old one.Similarly,people repairing broken bowls can never be seen again.