题目内容：

阅读短文，根据要求完成下面各小题。

Recent years have witnessed the running of bikes across China. An increase number of people choose cycling instead of driving to school, to workplace or to do sightseeing. Bike-sharing plans are warmly welcomed in many cities. Mobike had 5 . 85 million active users while Ofo had 1 . 4 million in the first week of this year.

People can unlock the shared bikes by simply using their smart phones. All bikes have GPS and can be left anywhere in the public for the next user. They’re popular among many Chinese people because they help solve "last-mile" problems in cities. (3) For example, people find it difficult to get to the hotel when they got off trains or to travel around the city.

However, the plans have also led to problems such as illegal（非法的） parking, vandalism（故意破坏） and theft. In February, two nurses in Beijing were placed under administrative detention （行政拘留） for five days for putting locks on two shared bikes.

In fact, these problems are also shared by bike-sharing plans abroad. Started in 2007, Velib is the largest public bike sharing system in Paris. At its early period, it also met with problems of vandalism or theft. (4) To deal with these problems, the company come up with the idea of encouraging people to return the bikes to the stations by rewarding free time for their next rides.

Now, Chinese service organizations are also trying to deal with these problems. For example, Mobike sets a 100 -point credit score（信用分数） for each user, but the points will be taken because of his or her bad behavior. Once a score drop below 80, bike rental（租金） will be increased from 1 yuan to 100 yuan per 30 minutes.

A.根据短文内容简要回答问题

1.How do people unlock the shared bikes?

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2.According to Mobike, how will a rider be punished if his or her credit score drops below 80?

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B.将短文中划线的句子译成汉语

3.______________________________________________________________________.

将短文中划线的句子译成汉语

4.______________________________________________________________________.

C.请给短文拟一个适当的英文标题

5.______________________________________________________________________.