二战后，德国分裂的根本原因是______ A．各占领国的占领区实行不同的政策 B．英

在容积可变的密闭容器中存在如下反应：A(g)+3B(g)2C(g) 该反应正反应为放热反应。某研究小组研究了其他条件不变时，改变某一条件对上述反应的影响，并根据实验数据作出下列关系图：下列判断一定错误的是

A．图Ⅱ研究的是温度对反应的影响，且甲的温度较高

B．图Ⅲ研究的是不同催化剂对反应的影响，且甲使用的催化剂效率较高

C．图I研究的是不同催化剂对反应的影响，且乙使用的催化剂效率较高

D．图I研究的是压强对反应的影响，且乙的压强较高

化学的学科特征是在原子、分子水平山研究物质和创造物质。

请从微观角度回答下列问题：

（1）从Na、Mg原子结构示意图推知，金属Na、Mg性质不同的原因是_____________________；一氧化碳和二氧化碳性质不同的原因是____________；NaOH溶液和Ca(OH)₂溶液都能使酚酞溶液变红的原因是_________________________________。由此可见，物质的结构决定物质的性质。

（2）

图1反应的化学方程式为________________________________，该反应过程中氢原子和氧原子结合成水分子。

图2反应的实质是_________________结合成水分子。

由此可见：得到同一物质，运用的化学反应原理可能不同。

根据句意完成已给出首字母的单词，使补全后的句子语法正确，意义通顺。

1. He made great p           in spoken English.

2. — What's the c           like in Africa?

    — Oh, it's hot and rainy.

3.After entering the WTO, more f           will come to our country for business.

4. Macao was taken back by China at the end of the t           century.

5. My friends e           me not to give up and keep on fighting.

6. The disabled person came across many d           when he sailed around the world.

7. Many animals died on the island because people destroyed the e           of the island.

8. My k           of chemistry is very poor.

9. If you want keep something a m          , keep your lips closed.

10. Most of the things which were described in the book The A           of Tom Sawyer

      really happened to the writer himself.

Aria Ricardo was a beautiful, slim young woman with dark hair, dark eyes, and dark skin．She used to work as a model and earn as much as $ 2 000 in one day in front of the camera．She modeled for top magazines in Paris, Rome, Tokyo, and throughout the United States．

Aria’s father, now retired because of a disability, was a police officer who really loved his work．Aria would rather follow in her father’s footsteps than pursue her modeling career．She remembered listening to her father tell stories when he came home after a day on the beat．The excitement, tensions and risks of police work appealed to her．

Aria got started in the modeling business quite by accident．She accompanied a friend to an interview at a modeling agency．Her friend wanted the job, while Aria didn’t．The people at the agency were impressed with Aria’s appearance and poise．They knew she’d be brilliant in front of the camera．So they sent her on her first modeling job—for Seventeen Magazine—right away．

Despite her success as a model, Aria never gave up her dream of being a police officer．She passed the written exam for the New York Police Department．She planned to enter the Police Academy as quickly as possible．Her family and friends thought she was out of her mind even to consider such a thing．Police work was dangerous and the pay couldn’t compare to a top model’s income．But Aria knew what she wanted, and she went for it．She had never really intended to be a model anyway．Finally she hooked her fish．

56．Aria’s success as a model resulted from ________．

A．her desire to succeed in it                                               B．her looks and shape

C．the help of her father                                             D．the competition with her friend

57．Aria went into modeling because ________．

A．she wanted to earn more money                         B．she wanted to accompany her friend

C．she was given an unexpected opportunity        D．she was very beautiful

58．Aria’s family would like her to ________．

A．remain a model                                                         B．do whatever she liked

C．find something challenging                                    D．follow her father’s footsteps

59．Aria Ricardo probably is a ________ now．

A．photographer working for a magazine               B．student of the Police Academy

C．top model of a world company                             D．woman police officer

在灭火救援行动中，只有实现统一指挥，才能使灭火组织者准确地掌握和正确的调用各种参战力量，保证作战部署的整体性和作战行动的协调性。（）