对楼板为现浇板的框架结构，中框架梁的截面形式是（）。

腭裂发生于

A．胚胎第1～3周
B．胚胎第4～6周
C．胚胎第5～7周
D．胚胎第8～12周
E．胚胎第13周以后

男孩，6个月，出生后即发现右眼外上方肿物，大小无明显变化，检查发现肿物2cm×3cm大小，柔软，无压痛，界限清楚。下一步的措施是下列哪一项()

A．血管造影

B．CT检查

C．皮质类固醇激素局部注射

D．硬化剂局部注射

E．局部肿物切除

人民警察在社会主义革命和建设中，始终处在维护社会稳定、与各种刑事犯罪作斗争的第一线，工作条件艰苦，任务繁重，危险性大，因此人民警察有权把对社会的奉献作为向社会索取个人利益的资本和条件，为家人谋福利。( )

（12分）硫酸亚铁铵(NH₄)₂SO₄?FeSO₄?6H₂O是一种重要化学试剂，实验室用除去锌镀层的铁片来制取硫酸亚铁铵，流程如下：

请回答下列问题：

（1）确定锌镀层被除去的标志是                         ；

计算上述铁片锌镀层的厚度，不需要的数据是            （填编号）。

a．锌的密度ρ（g/cm³）      b．镀锌铁片质量m ₁（g）   c．纯铁片质量m ₂（g）

d．镀锌铁片面积S（cm²）    e．镀锌铁片厚度h（cm）

（2）上述流程中：操作Ⅰ是取出铁片、       、        、称量。

（3）A物质可以为        （填编号）。

a．CuCl₂       b．CuO       c．Cu(NO₃)₂       d．CuSO₄  

（4）用无水乙醇洗涤潮湿的硫酸亚铁铵晶体是为了除去晶体表面残留的水分，不用加热烘干的原因是                   。

（5）鉴定所得晶体中含有Fe^2＋、NH₄^＋、SO₄^2－离子的实验方法正确的是     （填编号）。

a．取少量样品于试管，加水溶解，通入适量Cl₂，再加KSCN溶液，观察现象

b．取少量样品于试管，加水溶解，加入NaOH溶液，露置于空气中，观察现象

c．取少量样品于试管，加水溶解，加入浓NaOH溶液并加热，用湿润的红色石蕊试纸置于试管口，观察试纸颜色的变化

d．取少量样品于试管，加水溶解，加入盐酸后再加入BaCl₂溶液，观察现象

阅读理解

     As the capital of Germany, Berlin is a city changing constantly-and especially so over the past 20

years, during which its eastern and western sides have been reunited after the long period of division (分裂).      Berlin impresses visitors with a dynamic cultural identity with green spaces, flowing rivers and

canals; it is a city full of artistic atmosphere and youthful vitality (活力). Berlin offers excellent food at

reasonable prices, bars and cafes where breakfast can be served until late into the afternoon. As people

here demonstrated perfectly when the Wall came down 20 years ago, Berlin is also a city that knows

how to party.    

     British Airways (0844 493 0787; www. ba. com), has five flights a day from Heathrow to Berlin.    

     The Grand Hyatt (0049 30 2553 1234; www. berlin, grand. hyatt. com) on the Marlene Dietrich

Platz in the glitzy new Potsdamer Platz, is a great place to get a sense of this fastmoving city. Sixty years

ago, this spot was Berlin's answer to Piccadilly Circus; 20 years ago it was a forbidden piece of noman's

land. Now it is a buzzing commercial center with restaurants, bars and cinemas. The Grand Hyatt is

modern, graceful and arty. It has a bar with more than 200 kinds of whisky and a swimming pool with

views on to Berlin Philharmonic (交响乐团). Rooms from 220 euros.    

     Too modern? Traditionalists should head for the Adlon (0049 302 2610; www. hoteladlon. de;

doubles from 220 euros, excluding breakfast), a stone's throw from the Brandenburg Gate. Too

expensive? The Circus Hotel (www. circusberlin. de) in Berlin Mitte has doubles from 68 euros a night

and a programme of Berlin Wallrelated tours.   

      Further information...    

      Berlin Tourism (0049 30 250 025; www. visitberlin. de); German National Tourist Office

(0207317 0908; www. germanytourism. co. uk ).

1. The first two paragraphs are intended to tell us ________.

A. why Berlin is worth visiting                  

B. how Germany became reunited

C. Berlin has changed in the past 20 years      

D. brief information about the Berlin Wall

2. We learn from the text that the Grand Hyatt ________.

A. is a famous traditional hotel        

B. is a commercial center in Berlin

C. offers double rooms at a low price            

D. houses famous artists and musicians

3. To book a room at the Adlon, you should call ________.

A. 0844 493 0787                    

B. 0049 30 2553 1234

C. 0049 302 2610                    

D. 0049 30 250 025

4. If you are interested in traveling to Germany, you should visit ________.

A. www. hoteladlon. de                          

B. www. circusberlin. de

C. www. berlin. grand. hyatt. com                

D. www. germanytourism. co. uk