（2011年湖北宜昌，8题）下列物质中，属于纯净物的是 A．海水 B．蒸馏水 C

在试验室进行击实试验是研究土压实性质的基本方法，轻型击实试验适用于粒径小于( )mm的黏性土。

A．3

B．4

C．5

D．6

患者女性，45岁，发病前无明显诱因。双小腿皮疹1个月，并逐渐蔓延至大腿、腹部、臀部和上肢。皮损表现为弥漫性斑疹，类似蜘蛛痣呈网状分布，无系统性病变。皮损组织病理表现为真皮上部大量扩张的毛细血管，管壁由内皮细胞组成，未见炎症细胞。

此病患者最佳的治疗方法是（）

A.抗感染治疗

B.糖皮质激素

C.大剂量维生素C

D.脉冲染料激光或铜蒸气激光

E.外用药物治疗

第三部分阅读理解（共15小题；每小题2分，满分30分）

请阅读下列短文,从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项的标号涂黑。

May 16th            Wednesday                                            Sunny

They used to call her “the witch（女巫）”, but today I found things were different.

My legs were too short to reach the floor from up there on the big chair. I was so afraid. My legs started to shake.

It was the first time I had been to the principal’s（校长的） office. And I knew what she was going to ask me.

Why had I been running on the concrete（混凝土） in the playground? Why hadn’t I followed the school rules?

The principal’s secretary was sitting at her desk. She kept asking me questions like whether I liked school and what grade I was in. I didn’t want to talk to her, so I just gave one-word answers.         

Then she asked what my dad did. But I didn’t really know what he did, so I made something up. “He plays basketball for the Boston Celtics,” I said.

The secretary just looked at me, and said nothing more.

Just then, the door to the principal’s office opened. There she was, the woman that everyone called “the witch”.

Was she really that bad? I was surprised to see her office walls were bright yellow, and there were some nice pictures on the desk.

She told me about the pictures. I was surprised that she had a family and a kid, just like me.

Then she asked how my family was. It turned out that she had known me since I was only a few weeks old. I was happy to hear that. If she knew my mum, then I wouldn’t get into much trouble.

She cleaned the cut on my knee and told me to be more careful. She also told me about the rules of the playground. But she didn’t punish or shout at me. And I forgot all the bad things I had heard about “the witch”. I had met her and I knew she was nice.

1．“The witch” in the story refers to _______.

A. the writer                     B. the writer’s father            C. the secretary    D. the principal

2．Which of the following statements is TRUE?

A. The writer often asked the principal for help.

　  B. The principal must be very strict with students.

　  C. Running in the playground was allowed by the school rules.

　  D. The writer’s father was an excellent basketball player.

3．Which word can replace the underlined phrase “made up” (in Paragraph 6)?

　  A. Told.                     B. Invented.             C. Minded.              D. Memorized.

4. How did the writer find the principal in the end?

　  A. Terrible.            B. Kind.                        C. Proud.                D. Strict.

紧急停车时，怎样确保转化催化剂不析碳？

男性，78岁，既往患冠心病30余年，因寒热，大汗，在当地医院诊断疟疾，下列哪种药慎用

A．氯喹
B．奎宁
C．伯氨喹啉
D．磺胺类
E．青霉素