治疗精神运动性发作的首选药： A．卡马西平 B．苯妥英钠 C．地西泮 D．乙琥胺 E

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       Once there was a boy in London. His name was Jimmy. He started painting when he was three years old,

and when he was five years old, he was already very good at it. He painted many beautiful and interesting

pictures, and a lot of people bought his pictures. They said, "This boy is going to be famous when he's a little

older, and then we're going to sell these pictures for a lot of money." 

       Jimmy's pictures were different from others' because he never painted on the whole of the paper. He

painted on half of it, and the other half was always empty. 

       "That's very clever," people said. "No other painters have ever done that!" 

       One day someone asked Jimmy, "Please tell me, Jimmy, why do you only paint on the bottom (底) half of

the paper, but not on the top half?" 

        "Because I'm small," Jimmy said, "and my brushes can't reach very high."

1. Where did Jimmy live? [ ]

A. In China.

B. In England.

C. In America.

D. In the USA.

2. When did he begin painting? [ ]

A. When he was three years old.

B. When he was five years old. 

C. When he was eight years old.

D. When he was ten years old.

3. What did Jimmy's pictures look like? [ ]

A. Beautiful.

B. Interesting. 

C. Bad

D. Beautiful and interesting.

4. Which part of paper did Jimmy paint? [ ]

A. The whole of the paper

B. The top half. 

C. The bottom half.

D. The middle part.

5. Why did Jimmy only paint half of the paper? [ ]

A. Because he was very clever.

B. Because he was very short. 

C. Because he was very tall.

D. Because he was very big.

一种商品，按进价的14%加价后定价，现在这种商品的进价降低了5%，若仍按原定价出售，则这种商品现在的利润率是（    ）%。

下列哪一项CT征象对诊断视网膜母细胞瘤最有价值:

A．眼球内肿块

B．眼球内肿块伴出血

C．眼球内肿块伴坏死

D．眼球内肿块伴钙化

E．眼球内肿块向颅内扩展

发生低钙血症的原因中，不包括（）

A.快速输入枸橼酸盐库存血

B.休克复苏输入大量晶体液

C.恶性肿瘤术后化疗

D.甲状旁腺功能受损

E.急性重症胰腺炎

卷筒的长度决定于绕在它上面的（）工作圈数或绳索工作长度。