现存世界上最早的有明确时间记载的雕版印刷品是（） A．《金刚经》 B．《贞观政要

阅读理解。

     Jack worked in an office in a small town. One day his boss (老板) said to him,"Jack, I want you to

go to Manchester, to an office there, to see Mr Brown. Here is the address. Jack went to Manchester.

When he walked out of the railway station. he thought. "The office isn't far from the station. I'll find it

easily."    

     But after an hour he didn't find it,so he stopped and asked an old woman. She said, "Go straight

along this street, turn to the left at the end, and it's the second building on the right. " Jack went and

found it.    

     A few days later he went to the same city, but again he couldn't find the office, so he asked someone

on the way. It was the same old woman!  She was surprised and said,"Are you still looking for that

place?"

1. Manchester is the name of  ______.

A. a city         

B. a building

C. a country      

D. a street

2.The boss wanted Jack to ______. 

A. go to Manchester   

B. go to his office

C. look after Mr. Brown  

D. visit Mr. Brown

3. How did Jack go to Manchester?

A. By bus.   

B. By train.   

C. By car.   

D. By plane.

4. Jack left the station and ______.

A. found the office himself  

C. asked where the office was

B. someone told him the way 

D. didn't know where he was

5. From the story we know ______.

A. Jack had a bad memory (记忆力) 

B. it was really difficult to find that place    

C. Jack never went to Manchester 

D. Jack was still looking tor that place    

已知y=ax⁵+bx³+cx-1．当x=-3时，y=7，求当x=3时，y的值．

耳源性颅内并发症包括硬脑膜外脓肿、化脓性脑膜炎、Bezold脓肿、脑脓肿等。

女性患者，头痛为主诉，以前额部疼痛为主，与体位关系明显，立位时头痛加重，卧位时头痛减轻或消失，腰穿见脑脊液流出，其最可能的诊断是（）

A.低颅压性头痛

B.偏头痛

C.紧张性头痛

D.颈椎病

E.高颅压

电功率P计算的正确公式是（）。

A.P=V ²/I

B.P=R ²/V

C.P=I ²/R

D.P=U ²/R