五、阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
主题群:灾害防范 子主题:自然灾害 语篇类型:说明文 难度:★★
Forest fires take place in the forest because there are so many trees to burn. 1. Other types of wildfire include grass fires, bush fires, and hill fires.
The major cause of forest fires is human activities. This can be carelessness such as not putting out a campfire or dropping a lit cigarette(香烟). It may also be caused by setting a fire on purpose. 2. One natural cause of fire is lightning.
3. They can be very large in size. They can move over 6 miles per hour and can jump over rivers and roads.
Modern firefighters are well-trained and know how to control forest fires. 4. Firefighters will often remove the trees and grass in a long line ahead of where the fire is going. This line is called the firebreak. When the fire reaches the firebreak it stops. 5. These airplanes can carry thousands of gallons of water to drop on land to reach areas of the fire.
A. Forest fires can be very difficult to put out or control.
B. Billions of dollars are spent every year fighting fires in some countries.
C. Sometimes firefighters will use airplanes to drop water on fires from the air.
D. Forest fires are a type of wildfire.
E. A strong wind can help a fire to spread and move quickly.
F. Around 80% of forest fires are caused by humans.
G. The firebreak is one of the best ways to stop a fire.

1. D 2. F 3. A 4. G 5. C

【分析】本题为灾害防范主题的七选五阅读理解题，解题思路为：先通读全文把握语篇主旨，再结合每个空格前后的语境逻辑（如指代、承接、举例等）匹配选项，排除多余项。具体步骤：1. 分析第1空：空格前讲森林火灾，后提及其他野火类型，需衔接“森林火灾属于野火”的内容；2. 分析第2空：空格前讲火灾的人为原因，后讲自然原因（闪电），需补充人为原因的相关内容；3. 分析第3空：空格后讲火灾的规模、移动速度，需引出火灾难控制的特点；4. 分析第4空：空格前提及“firebreak（防火线）”，需衔接防火线的作用；5. 分析第5空：空格后讲飞机运水灭火，需匹配使用飞机的相关内容。
【解析】1. 第1空：空格后提到“Other types of wildfire”，说明此处需说明森林火灾是野火的一种，对应选项D；2. 第2空：空格前讲火灾的人为原因，后讲自然原因，选项F“约80%森林火灾由人类导致”承接人为原因的内容，符合逻辑；3. 第3空：空格后描述火灾规模大、移动快，选项A“森林火灾很难扑灭或控制”引出下文对火灾特点的说明，衔接合理；4. 第4空：空格前提到“firebreak（防火线）”，选项G“防火线是阻止火灾的最好方法之一”承接上文的防火线概念，符合语境；5. 第5空：空格后提到“These airplanes”，选项C“有时消防员会用飞机从空中洒水灭火”引出下文的飞机相关内容，匹配逻辑。
【答案】1.D 2.F 3.A 4.G 5.C
【知识点】阅读理解（七选五）、语篇逻辑衔接
【点评】本题围绕灾害防范主题展开，考查学生对语篇上下文逻辑关系的把握能力，需结合语境匹配衔接项，难度中等，适合学生练习语篇逻辑分析能力。
【难度系数】0.6