若进栈序列为1，2，3，4，进栈过程中可以出栈，则下列不可能的一个出栈序列是 ___

Goddington Theater

The Goddington Theater Ticket Office is open from 10 a.m. until 4 p.m. Monday to Friday, and for half an hour in the evening before the advertised start time of each performance.

Telephone bookings

Your tickets are held at the Ticket Office for you to collect or, if you prefer, a charge of 35 cents is made to post them to you if you pay by cash. We’ll post them to you for free if you book by credit card. No extra charge.

Postal bookings

You can write to the Ticket Office requesting tickets, or to confirm a reservation.

Where to find Goddington Theater

Goddington Theater can be found within the Goddington University site, next to the car park, which is available for public use after 5 p.m. on weekdays and all day on weekends.

If travelling by car

Coming from the south end of Princes Street, you will see the library on your right. Next to the library is Goddington University. Take the next turning on the right, then first right into the car park gate straight ahead of you, stopping as close as possible to the orange machine. Put a $ 1 coin in the machine and the gate will rise.

If travelling by train/bus/ taxi

You will need to allow 30 minutes to walk from the train station. Taxis are available from the front of the station.

The University is a 5 to 10 minutes’ walk from the main bus station.

When ordering a taxi from the theater, ask to be picked up at the bottom of North Street. Taxis will not come into the car park because of the entrance charge.

小题1:You can book your tickets ________.

A．at 9 a.m. on Monday

B．at 5 p.m. on Wednesday

C．at lunch time on weekends

D．at noon on workdays小题2:Where is the Goddington Theater?

A．To the south of Princes Street.

B．On the right of the Ticket Office.

C．In the Goddington university.

D．At the bottom of North Street.小题3:What can we learn from the passage?

A．You can find a free parking place in the university.

B．You have to collect your tickets if you pay by credit card.

C．Tickets paid by cash will be posted to you at no extra charge.

D．Taxi drivers are unwilling to pick up customers inside the car park.

某化学小组探究液体有机物样品A（C₃H₈O₂）的结构，进行如下实验。

实验I：用下图实验装置，通过Na与A反应确定羟基个数。试回答下列问题：

（1）有机物A从 （填仪器名称）中加入；检验装置甲的气密性的方法是_______________________。

（2）实验前预先将小块钠在二甲苯中熔化成若干个小球并冷却后再与有机物A反应，其目的是_______________________________。

（3）实验数据记录如下：p=l.038 g·mL^-1

①不能选第组数据来计算A中羟基个数，这组数据出现错误的原因可能是________________，___________________（填两条）。

②有机物A中羟基个数为_______________________。

实验Ⅱ： 欲确定有机物A中含氧官能团的位置，进行如下实验：

①取7.30 mL A，Cu作催化剂，经氧化后完全转化成液态有机物B。

②取一质量为m₁g的洁净试管，向其中加入足量银氨溶液，滴人化合物B，并水浴加热，待充分反应后，静置，小心倒出上层清液，向试管中小心滴加蒸馏水，倒出，再加入蒸馏水，再倒出，最后将试管烘干并称量。重复2次，试管质量均为m₂g。 试回答下列问题：

（1）步骤②中小心滴加蒸馏水的目的是_______________________________。

（2）若则有机物A的结构简式是_________________________________。

（3）步骤②中，不宜将银氨溶液换成新制氢氧化铜溶液的原因是________________________________。

正在装车作业时，铁路槽车发生着火要立即（）。

A、通知停泵

B、通知停电

C、关闭鹤管阀门

D、报告消防队

肝主疏泄在维持气血运行的作用是

A．助心行血

B．调畅气机

C．脉道通利

D．调节血量