41.Bitwalking is an invention by a small company in London.To make people walk more,this new app on the mobile phone is paying people,based on their daily walking steps. With this app,walkers can earn one "Bitwalking dollar (or BW $)" for about 10,000 steps (about eight kilometres).Three BW $ can be earned by one person per day at most.The money people earned can be spent on online shopping sites or exchanged for cash. One idea behind the app is to make people healthier.But the designers also have another goal:to improve people's lives.In poor countries,people have to work far to walk,or to school,or simply to collect water.Workers in the countryside earn less than one dollar a day.By walking around with the Bitwalking app,they could earn three times more. The company has also set up Bitwalking centres in some poor areas.At the centres,local people will learn how to use the Bitwalking dollars or trade them for cash.Bitwalking is really helping to change lives.
(1)Who invented Bitwalking?
(2)How many Bitwalking dollars can people get at most every day?
(3)What is the goal of Bitwalking?
(4)How much do workers in the countryside of poor countries earn every day?
(5)How do Bitwalking centres help poor people change their lives?