Todaytherearemanyfiresthaninthepast.Over100,000wildf...

問題詳情：

    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（損害）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（氣候）change. Recent weather has been warmer and drier. This leads to dangerous fire conditions. When lightening strikes（發生雷電），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（植被）ker 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 burn 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 a result, fires help new trees to grow. Therefore, if a fire is not a serious threat（威脅）to people, firefighters may let it burn naturally.

233．Why did Russia have so many fires in one month in 2010?

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.

234．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.

235．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 I forests.

D．It’s difficult for firefighters to control the fires.

236．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．

【回答】

233．D

234．B

235．C

236．A

【分析】

現在的火災比過去更多了。每年有許多火災發生，摧毀了許多森林和人們的家園，什麼原因引發了更多的火災？如何控制火讓其更好地服務於人類？本文分析了引發火災的原因及怎樣控制火災。

233． 推理判斷題。題意：為什麼俄羅斯2010年一個月內發生了那麼多的火災？A. Because lightening spread the fire.因為雷電引發火災；B. Because there was much fuel for fires.因為我太多的燃料；C. Because there were not enough firefighters.因為消防員不夠；D. Because it was unusually hot, dry and windy.因為天氣不同尋常地熱、乾燥及多風。從文中的“In 2010, Russia had the hottest and driest summer in a century.”（2010年，俄羅斯經歷了一世紀以來最熱、最乾的有夏天）可以推測出本題選D。

234．細節理解題。題意：在美國，因為傳統的消防，發生了什麼事？A. There are fewer wildfires.野火更少了；B. Trees and grass become thicker.樹更多草更密了；C. The weather becomes warmer and drier.天氣變得温暖乾燥了；Sunlight reaches the ground to help forests.太陽*到地面幫助森林成長。從短文第3自然段，由於禁止山火，植被長得更加茂盛，故選B。

235． 主旨歸納題。題意：第4自然段的主要意思是什麼？A. Fires are serious threats to human beings.人類認真對待火災；B. Australian firefighters don’t put out fires.澳大利亞的消防員不滅火； C. Fires can play an important role I forests.火對森林起着重要的作用；D. It’s difficult for firefighters to control the fires.消防員控制火災是件難事。第四自然段指出，火對於森林有着特殊的作用，可以燒去死去的樹木，讓陽光照耀地面，可以幫助幼樹成長……，故選C。

236． 推理判斷題。題意：根據短文內容下面哪一個是對的？A. Not all the fires in the forests must be put out.不是森林中的所有火都必須撲滅；B. People’s carelessness leads to dangerous fires.人們的粗心導致嚴重的火災；C. Australia allows all the fires to burn naturally.澳大利亞允許所有的火自然地燃燒；D. There are more fires in Russia than in the USA.俄羅斯比美國有更多的火災。由短文第四自然段可知：火可以燒去死去的樹木，讓陽光照耀地面，可以幫助幼樹成長，火對森林也有積極的作用。所以不是所有的火都得撲滅，故選A。

知識點：方法與哲理

題型：閲讀理解