口语交际与综合性学习。 有人说：“人类进入汽车时代后，也许你可以在城市‘狂奔’

有一朋友声称自己家里收藏有以下文物，请你运用所学历史知识帮他鉴别一下，哪一件肯定是假的？[ ]

A．战国诸侯国的刀形币

B．秦朝的五铢钱

C．汉代的画像砖

D．商朝的铜尊

下列物质中，属于纯净物的是[ ]

A．太子奶

B．鲜橙汁

C．豆浆

D．冰水共存物

阅读下列材料：

2006年10月是中国工农红军长征取得伟大胜利70周年的纪念日。据下列材料，回答问题：

材料一  “红军不怕远征难，万水千山只等闲，五岭逶迤腾细浪，乌蒙磅礴走泥丸。金沙水拍云崖暖，大渡桥横铁索寒。更喜岷山千里雪，三军过后尽开颜。”

——毛 * * 《七律·长征》

材料二  长征精神的主要内涵是：乐于吃苦，不惧艰难的革命乐观主义；勇于战斗，坚无不摧的革命英雄主义；重于求实，独立自主的创新胆略；善于团结，顾全大局的集体主义。其主题是“一不怕苦，二不怕死”；其最显著的特点就是革命英雄主义精神。

——孙翠萍《西柏坡精神与井冈山精神、长征精神、延安精神的联系》（2003年6月9日《河北日报》）

材料三《中国工农红军长征路线示意图》

请回答：

（1）根据材料一并结合课本内容，说一说中央红军渡过的三条主要大河及战果

（2）根据材料二概括的红军长征精神，试各举一例说明

（3）根据上述材料并结合课本内容，分析红军长征的具体原因

（4）简述红军长征胜利的伟大历史意义

Most people are aware that outdoor air pollution can damage their health，but many do not know that indoor air pollution can also have significant health effects.Environmental Protection Agency studies indicate that indoor levels of pollutants may be 3～5 times，and occasionally more than 100 times，higher than outdoor levels.These levels of indoor air pollutants may be of particular concern because most people spend about 90% of their time indoors.

There are many sources of indoor air pollution in any home.These include sources such as oil，gas，coal，wood，and tobacco products，building materials，wet or damp carpet，and furniture made of certain pressed wood products，products for household cleaning and maintenance，personal care，or hobbies，central heating and cooling systems.

Immediate effects may show up after a single exposure (暴露) or repeated exposures.These include irritation of the eyes，nose，and throat，headaches，dizziness.Such immediate effects are usually short­term and treatable.Sometimes the treatment is simply removing the person’s exposure to the source of the pollution，if it can be identified.

The likelihood of immediate reactions to indoor air pollutants depends on several factors.Age and pre­existing medical conditions are two important influences.In other cases，whether a person reacts to a pollutant depends on individual sensitivity，which varies tremendously from person to person.Some people can become sensitized to biological pollutants after repeated exposures，and it appears that some people can become sensitized to chemical pollutants as well.

Certain immediate effects are similar to those from colds or other viral (病毒性的) diseases，so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.While pollutants commonly found in indoor air are responsible for many harmful effects，there is considerable uncertainty about what concentrations or periods of exposure are necessary to produce specific health problems.People also react very differently to exposure to indoor air pollutants.Therefore，further research is needed to better understand the effects of indoor air pollution and to find efficient ways to protect our health.

小题1:According to the first paragraph，which of the following is NOT true?

A．People often fail to notice indoor air pollution.

B．Indoor air pollution sometimes is more dangerous than outdoor air pollution.

C．Outdoor air pollution may not be so serious as indoor air pollution.

D．It is obvious that people have been paying more attention to indoor air pollution.小题2:According to the author，which may NOT be the source of indoor air pollution?

A．Building materials.

B．Wet carpet.

C．Cooling system.

D．Refrigerators.小题3:What does the underlined word “irritation” in the third paragraph probably mean?

A．Bad intention.

B．Much sensitivity.

C．Injury.

D．Carelessness.小题4:Which of the following might be the best title for the passage?

A．Reactions of Pollution

B．Danger from Home

C．Pollution Resources

D．Different Pollutions

根据空气温度、湿度、太阳辐射等项因素，将世界各地划分为几个气候区？分别是什么？