If you live in Shanghai or Bejing，you may see some orange bicycles on streets these  days．

These orange bikes are from a company called Mobike．You can order a bike through its app on your phone．When you find the bike，you just scan the QR code（扫二维码）so you can use it．You don't need to return the bike to a station，just park it somewhere．

China was known as"the kingdom of bicycles"around 30years ago． But lately more people choose to drive cars and catch the subway，fewer people choose to ride bicycles．Now，bike rental（租赁）services like Mobike are bringing biking back to people's lives． "In those days，I got the feeling that Chinese people were trying to be modern and push away the past．So they did not want to be linked with bicycles，"said Ines Brunn，a German woman who opened a bike store in Beijing．"But now I believe changes in people's tastes will shape  new thinking on bikes．"

Now，online rental services make biking much more fashionable（时髦的），but it's still not easy to ride bikes in Chinese cities．Cars usually take up bicycle lanes（车道）．Bikers have to ride next to cars in car lanes， which can be very dangerous． This is why Beijing will build over 3，200km of new bike lanes．Drivers who park on bike lanes will be punished．Traffic signs will be put on roads to better protect bikers．

46．You can 　　first when you find the bike that you have ordered．

A．	phone the company
B．	ask the manager for it
C．	use it right away
D．	scan the QR code

47．After you use the bike，you can 　　

A．	park it somewhere
B．	return it to a station
C．	ride it home
D．	send it to the company

48．The underlined word "linked"means 　　

A．	compared
B．	connected
C．	covered
D．	filled

49．Because of 　　，biking has become more fashionable now．

A．	the color of the bikes
B．	the opening of bike stores
C．	online rental services
D．	changes in people's tastes

50．The last paragraph（段落）of the passage tells us 　　．

A．	it's easy to ride bikes in Chinese cities
B．	it's dangerous to park a car in car lanes
C．	bikers will be punished on bike lanes
D．	something will be done to protect bikers