Today, David give a classroom assignment about an invention I dislike. Ultimately, I think battery over is my dislike. As a technology tool, the reason for battery is make life convenient which keep shaver and haircut to use continuous. But when the battery is abating with electronic, the battery become useless in the life, if the child play the useless battery, the situation which child can be affected the brain with the radioactive substance is very seriously. If the radioactive substance fall in water, the water will become poisonous ,and the battery only throw into rubbish bin. if someone throw into a recyclable rubbish bin, it also can not biodegradable. Maybe it will destructive eniverment of other rubbish can bidegradable. To be healthy and enjoy environmentally products ,I dislike the invention.
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