One day that seemed quite ordinary, the people of Kaifeng awoke to discover that there were plenty of shared bicycles in their city. What happened? Where did these shared bicycles come from?

It is said that everything began on June 18th. At that time, a group of four girls wanted to taste Kaifeng’s famous soup dumplings. “After class, we felt like trying some soup dumplings, and that’s when we made up our minds to take on the challenge of riding shared bikes to Kaifeng. You’re only young once. So we really wanted to start a sudden, exciting journey with our closest friends,” said the young girls involved.

This activity is attracting lots of university students in Zhengzhou. Groups of Zhengzhou students are starting riding to Kaifeng, cycling 50 kilometers during the early morning hours. The 50-kilometer trip took about five hours to complete. On their way, some bikers are holding flags, while others are singing together. When they come across slopes (斜坡), they encourage one another to keep going.

The cycling event has gotten a lot of attention. The traffic police are checking the roads at night to make sure everyone is safe. Also, relevant authorities (相关部门) set up shared bike interchange points along the routes. What’s more, from November 3, Kaifeng’s scenic spots are letting students in for free to welcome the wave! For example, the Millennium City Park is giving free one-year membership (会员资格) cards to university students from other places who come to Kaifeng by bicycle.

1.1. Why did the four girls decide to ride to Kaifeng?

A Because they wanted to make money.

B Because they wanted to exercise.

C Because they wanted to try soup dumplings.

D Because they wanted to show off their biking skills.

解析：选C。C细节理解题。根据第二段中的“After class, we felt like trying some soup dumplings, and that’s when we made up our minds to take on the challenge of riding shared bikes to Kaifeng.”可知，这波“夜骑开封潮”源于6月18日，4名女生想品尝开封的灌汤包，便挑战骑共享单车到开封。故选C。

2.2.What can we infer about the cyclists during their trip?

A They all felt tired and wanted to give up.

B They enjoyed themselves and encouraged each other.

C They were not allowed to make any noise.

D They couldn’t pay the shared bikes back.

解析：选B。B推理判断题。根据第三段中的“On their way, some bikers are holding flags, while others are singing together. When they come across slopes, they encourage one another to keep going.”可知，路途中，大家有的带着旗帜，有的一起唱歌，遇到上坡还会一起喊加油，因此这段旅途中他们很是享受并且互相鼓励打气。故选B。

3.3.Why did the traffic police start night patrols(巡逻)?

A To prevent students from riding bikes.

B To help develop tourism in Kaifeng.

C To control the number of shared bicycles.

D To ensure the safety of the cyclists.

解析：选D。D细节理解题。根据第四段中的“The traffic police are checking the roads at night to make sure everyone is safe.”可知，交警部门夜间巡逻是为这些夜骑的大学生们保驾护航，即他们是为了确保骑行者们的安全。故选D。

4.4. If a university student rides a bike to Kaifeng, he/she can __________.

A visit the Millennium City Park for free

B receive a free bicycle

C spend less money on soup dumplings

D join in the cycling event in Kaifeng

解析：选A。A细节理解题。根据最后一段中的“the Millennium City Park is giving free one-year membership cards to university students from other places who come to Kaifeng by bicycle.”可知，清明上河园景区表示，活动期间，对外地骑自行车来到开封的全部在校大学生，免费赠送入园年卡。故选A。

5.5. What is the main idea of the passage?

A University students are creative.

B Traditional food: soup dumplings.

C Popular night rides to Kaifeng.

D Kaifeng attracts tourists from other places.

解析：选C。C主旨大意题。本文主要讲述了河南郑州大学生“夜骑开封”这股热潮的相关情况。故选C。