Question

【题目】 Today there are many fires than in the past. Over 100.000 wildfires burn each year in America.Russia has 20,000 to 35,000 wildfires every year. Australia has on average 60,000 each year. These fires destroy huge areas of forests and burn hundreds of homes.

Many experts believe there are several reasons for this sudden increase in fires. The first reason is climate(气候) change. Recent weather has been warmer and drier. This leads to dangerous fire conditions. When lightening strikes( 发生雷电) dry grass easily catches fire. Hot winds add to the problem. The wind spreads a fire quickly. In 2010, Russia had the hottest and driest summer in a century. In just one month, 500 fires destroyed over 2,000 homes. Some people lost their lives.

Traditional fire-fighting practices are another reason for the increase in fires. In America, firefighters used to quickly put out every fire .They didn't allow the grass and trees to burn. As a result, today many forests have thicker vegetation. Thicker vegetation means more fuel（燃料） for fires. Also, without fires from time to time, forests become overcrowded and unhealthy. Some trees are dead.The dead wood then easily catches fire. So surprisingly, America has many more fires today partly because of its past fire-fighting- practices.

Scientists now understand that a fire can be a natural part of a healthy forest. As a result, countries like Australia allow more fires to bum naturally. Sometimes. fire fighters even start fires to get rid of(去除) dead wood. Of course, they carefully control the fires. The fire thins out old trees. This allows sunlight to reach the ground. As result, fires help new trees to grow. Therefore, if a fire is not a serious threat(威胁) to people, firefighters may let it burn naturally

【1】Why did Russia have so many fires in one month in2010?

A.Because lightening spread the fire.B.Because there was much fuel for fires.

C.Because there were not enough firefighters.D.Because it was unusually hot, dry and windy.

【2】What happens because of the traditional fire-fighting practices in the USA?

A.There are fewer wildfires.B.Trees and grass become thicker.

C.The weather becomes warmer and drier.D.Sunlight reaches the ground to help forests.

【3】What is the main idea of Paragraph 4?

A.Fires are serious threats to human beings.B.Australian firefighters don't put out fires.

C.Fires can play an important role in forests.D.It's difficult for firefighters to control the fires.

【4】Which of the following is true according to the passage?

A.Not all the fires in the forests must be put out.B.People's carelessness leads to dangerous fires.

C.Australia allows all the fires to burn naturally.D.There are more fires in Russia than in the USA.

Answer 1

【答案】

【1】D

【2】B

【3】C

【4】A

【解析】

现在的火灾比过去更多了。每年有许多火灾发生，摧毁了许多森林和人们的家园，什么原因引发了更多的火灾？如何控制火灾让其更好地服务于人类？本篇文章分析了火灾的原因以及怎样控制火灾。

【1】细节理解题。根据文中的句子“In 2010, Russia had the hottest and driest summer in a century.”，可知在2010年俄罗斯经历了一个世纪以来最热、最干燥的夏天。可知选项D是俄罗斯一个月发生很多火灾的原因。故选D。

【2】细节理解题。根据文中的句子“In America, firefighters used to quickly put out every fire. They didn't allow the grass and trees to burn. As a result, today many forests have thicker vegetation( ) Thicker vegetation means more fuel（燃料） for fires.”，可知消防员迅速扑灭每一场火灾，他们不允许草和树林燃烧，导致森林有更厚的植被。故选B。

【3】细节理解题。根据本段的第一句“Scientists now understand that a fire can be a natural part of a healthy forest.”以及“As result, fires help new trees to grow.”，可知火灾可以被视为健康森林的一部分，可以帮助新的数目生长。同时结合整段段意，可知这一段主要讲述了火灾对于森林来说是由重要作用的。选项C符合题意。故选C。

【4】推理判断题。根据文中的句子“As result, fires help new trees to grow. Therefore, if a fire is not a serious threat(威胁) to people, firefighters may let it burn naturally”，可知并不是所有的火灾必须被扑灭。故选项A正确；选项B说的是：人们疏忽导致了危险的火灾，这个是文章没有提及的；选项C说的是澳大利亚允许所有的火自然燃烧，显然说的过去绝对，错在单词all上；选项D说的是：俄罗斯比美国有更多的火灾，文中没有进行比较。综合以上分析，选项A的说法是符合题意。故选A。