切割全煤巷道时，应先（），再破碎中间部分。

Bicycles, a long-forgotten vehicle that seems to belong to the last century, are returning to the streets of Guangzhou, as the city starts to ban the running of motorcycle in urban Guangzhou.

“Business has never been so good for my shop,” said Chen Yongwu, a bicycle shop owner at the city’s Donghua West Road, “I have to work 12 hours a day to meet the demand of my customers. ”

“Even my wife and brother-in-law have to give me a hand lately. ”

Chen originally ran a motorcycle repair shop.  He grasped the opportunity of the motorcycle ban, and started his bicycle business soon after hearing about the banning.

“I sold 23 bicycles on January 2 alone. ” Said Chen.

Bicycle is more convenient and healthier

“My home is one kilometer from the metro station,” said a middle-aged man who is waiting for his bicycle at Chen’s shop, “it is too tiresome to walk to the station, but taking a bus for such a short distance is a waste of money. ”

“So I decided to buy a bicycle. ”

The bicycle costs around 600 yuan, which is equal to the bus fare of half a year.

“Besides, riding a bicycle to work is much healthier than riding a bus. ”

The bicycle buyers can be categorized into two groups.  One group of buyers buy the bicycles for the transportation of small commodities; the other ride the bicycles to work.

Arising problems

Riding a bicycle to work may be healthy, but it is not without problems.

The lack of bicycle lanes has posed a big threat to the safety of the bicycle riders in Guangzhou.

“I was riding my bicycle on Huifu West Road on day,” said Mr.  Zhang, “then suddenly the bus pulled over besides me near the bus station. ”

“I was so frightened at the time, because the bus nearly hit me. ”

The sideways in Guangzhou are usually crowded with foot passengers, so citizens also could not use the sideways.

“It is worse than walking. ”

Besides, finding a place a park the bicycles could be very difficult, much more difficult then finding a place to park your car.

小题1:What is the min topic of the passage?

A．Motorcycle ban.

B．Bicycles’returming

C．Convenience of riding a bicycle

D．Problems brought by bicycles小题2:What is the purpose of the 2^nd paragraph to the 5^th paragraph?

A．To prove that more people choose to ride bicycles.

B．To persuade people into buying bicycles.

C．To ensure that there are enough bicycles to buy.

D．To prove that the bicycle business helps get a lot more profit.小题3:Which of the following statements is TRUE?

A．A lot of motorcycle repair shop started their bicycle business after the ban.

B．Taking a bus is much healthier than riding a bike.

C．Guangzhou has designed lanes particularly for bicycle riders.

D．Finding a parking space for bikes can be more difficult than for cars.小题4:Where can the passage most likely come from?

A．A magazine

B．A newspaper

C．A textbook

D．A booklet

《中华人民共和国外国人入境出境管理法实施细则》第四十五条规定，对不办理住宿登记或者不向公安机关申报住宿登记或者留宿未持有效证件外国人的责任者，可以处警告或者（）

A.50元以上、500元以下罚款

B.100元以上、500元以下罚款

C.200元以上、500元以下罚款

D.500元以上、1000元以下罚款

代履行：是指义务人逾期不履行行政法义务，由他人代为履行可以达到相同目的的，行政机关可以自己代为履行或者委托第三人代为履行，向义务人征收代履行费用的强制执行制度。
根据上述定义，下面关于代履行的说法正确的有：

A．张某的房子被鉴定为危险房屋，行政机关要求其修缮房屋，张某一直不予执行，张某的邻居王某为其修缮了房屋。王某的行为属于代履行，可以要求张某支付全部的维修费用
B．张某和丈夫李某分居两年达到离婚条件，但是李某仍然不肯签订离婚协议书，在张某的要求下李某的父亲代为签了字，李某父亲的行为属于代履行
C．小李搭乘小林的汽车回家，在途中发生交通事故，小李受伤，双方签订协议由小林的父亲偿还双方协议的赔偿金。林父的行为属于代履行
D．因违章停车造成交通堵塞，公安机关可以直接指定拖车服务公司，将违章停放的车辆转移到指定地点，然后通知车主来取，拖车公司的行为属于代履行

热油管线停输后，管线内原油冷却和凝固分几个阶段？

夹具体的定位元件的加工方法，和常见机械零件的加工方法（）。

A、完全不同

B、完全相同

C、部分相同，部分不同，要求精度比较高

D、说不准，变化太大