16．請閱讀下面短文，從每小題所給的 A、B、C 三個選項中，選出一個最佳選項，并在答題卡上將該項涂黑．
High-speed trains，Alipay（ 支付寶），shared bikes and online payment are seen as the new Four Great
Achievements of China by young foreigners，according to a video survey by the Silk Road Research Institute of Beijing Foreign Studies University．In the video，young people from 20 countries along Belt and Road Routes （ 一帶一路） were asked to name great inventions that had influenced their lives in China．The following is what they said from 4 young people of them．
51．What does Justin think of the high-speed railways in China according to his words？A
A．Fast and tidy．
B．Convenient and wonderful．
C．Cheap and amazing．
52．What do"A"and"B"refer to （指） inYala's words？C
A．Two bikes．
B．Two riders．
C．Two places．
53．What does the underlined phrase"be in a tough spot"mean？A
A．Get into trouble．
B．Lose your way．
C．Stay in silence．
54．Which of the following is TRUE according to the above information？B
A．Bicycle-sharing system provides bikes for free．
B．There're no high-speed railways in Romania now．
C．Zhi Fu Bao is the only way of paying for things．
55．What conclusion（ 結(jié)論） can we draw about the new four great achievements？B
A．They were created by young foreign people．
B．They are the signs that China is improving rapidly．
C．They were brought to the countries along Belt and Road Routes．
