Trắc nghiệm: The purpose of any invention is to make our lives better. so good or bad; it depends on the way by which we use these inventions.,The purpose of any invention is to make our lives better. so good or bad. it depends on the way by which we use these inventions.,“ The purpose of any invention is to make our lives better. so good or bad. it depends on the way by which we use these inventions,“ The purpose of any invention is to make our lives better. so good or bad. it depends on the way by which we use these inventions.