我国会计法规体系由()构成。A.会计法律 B.会计行政法规 C.国家统一会计制度 D

患者男性，60岁，因"声音嘶哑半月余半咽痛"就诊。查体发现颈部可及2cm×4cm大小肿大淋巴结，颈部MRI提示①右侧梨状窝新生物，侵及右侧声带，环状软骨部分受侵；②双侧颈部多个肿大淋巴结，最大径＜6cm

患者经病检确诊为梨状窝低分化鳞癌，其他辅助检查未见远处转移情况。则考虑分期为（）。

A.cT₁N₁M₀

B.cT₂N₁M₀

C.cT₃N₂M₀

D.cT₄N₂M₀

E.cT₄N₃M₀

化学小魔术“魔棒点灯”的表演过程是：用玻璃棒蘸取固体高锰酸钾与浓硫酸的混合物，将混合物与酒精灯的灯芯接触，酒精即燃．其原理是：固体高锰酸钾与浓硫酸反应生成高锰酸（HMnO₄）和硫酸钾，高锰酸立即分解生成一种棕色油状物──七氧化二锰和水，七氧化二锰遇酒精时，发生剧烈的氧化还原反应使酒精燃烧．七氧化二锰还能爆炸，分解生成二氧化锰、氧气和臭氧．氧气和臭氧的分子个数比为3：1．试写出生成高锰酸、七氧化二锰和它爆炸分解的化学方程式．

______；______；______．

阅读理解。

     I don't know how it is that when I go to a post office I always seem to find myself in a line behind

someone who has some long and complicated business to do. Having only come in to buy a couple of

stamps, I am obliged to wait patiently while an old lady takes ten minutes to complete a form that a child

could do in one. People in other lines move quickly forward to take their turns and are served by cheerful

clerks. Sometimes, feeling that I cannot bear waiting in my motionless line any longer, I decide to join

another one. It may be longer, but at least it is moving. This always turns out to be the worst thing I could

have done. Not only have I now lost my place in the first line but the one I am in now slows to a stop. An

angry argument suddenly develops between the clerk and the customer at the counter, or information is

asked for which results in the clerk having to ask a senior official or, if it's a particularly difficult problem,

disappear into a back room. Why it takes him so long, I don't know. Perhaps he has a quick snack, but,

no, that can't be right because when at last my turn comes, he pushes forward a printed sign, saying "

Position Closed" and without a smile says, "Sorry, going to lunch"

1. When the writer goes to the post office  _____. 

A.  he always has a lot of business to do    

B. he always has to fill in a form

C. he only buys stamps                    

D. he has to try to be patient

2. Why does the writer sometimes decide to join a line at another counter? 

A. There aren't so many people waiting there.    

B. The clerk is more cheerful.

C. The people are moving.        

D. The clerk is not so busy.

3. What usually happens after the writer has joined another line? 

A. It gradually stops                    

B. It stops suddenly

C.  It keeps stopping                  

D. It doesn't stop

4. Why does the writer think the clerk goes into a back room?    

A. To have his lunch                    

B. To get some information

C. To have a rest                        

D. To talk to someone

5. What happened when it is the writer's turn to be served?    

A. The clerk tells him to go away      

B. The clerk goes off duty

C. The clerk gives him a sign              

D. The clerk offers him a position

梯田是由于地块（）按等高线排列呈阶梯状而得名。

A.平坡

B.顺坡

C.逆坡

D.倒坡

如何降低家居装修的造价？