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三、还原信息
March 20th is World Water Day every year. According to a report from the United Nations, more than half of the world's major rivers have serious water loss and are polluted.
The Yellow River, which is the world's fifth longest river, watered some of the oldest farms on earth. (1)
The Nile in Egypt, running 6,650 km, is the longest river in the world. (2)
How does it happen? Mostly it's damming (筑坝) and global (全球的) warming that make rivers dry. (3)
(4)
A. Weather changes day by day.
B. But now it has a serious problem.
C. Global warming is making things worse.
D. It used to carry 32 billion m³ of water a year.
E. Dams provide fields with water and make power.
F. The water pollution is becoming more and more serious.
March 20th is World Water Day every year. According to a report from the United Nations, more than half of the world's major rivers have serious water loss and are polluted.
The Yellow River, which is the world's fifth longest river, watered some of the oldest farms on earth. (1)
B
Its source (源头) on Qinghai-Xizang Plateau is drying up. In most of the past 35 years, it didn't reach the sea.The Nile in Egypt, running 6,650 km, is the longest river in the world. (2)
D
But now it is down to 2 billion m³ or so. Australia's Murray River reaches the sea only every other year. One fifth of America's Rio Grande has no water either.How does it happen? Mostly it's damming (筑坝) and global (全球的) warming that make rivers dry. (3)
E
Now about 45,000 of them lie across the world's rivers. They hold back around 15% of the world's fresh water from running to the sea.(4)
C
Warmer weather takes water away. The glacier (冰川) are becoming smaller. The source of the Yellow River is drying up because of it. Global warming has had certain effects on water sources. Droughts (干旱) happening around the world make people pay more attention to this fact.A. Weather changes day by day.
B. But now it has a serious problem.
C. Global warming is making things worse.
D. It used to carry 32 billion m³ of water a year.
E. Dams provide fields with water and make power.
F. The water pollution is becoming more and more serious.
答案
1. B 2. D 3. E 4. C
解析
【分析】
本题为英语还原信息题，解题思路是：先通读全文把握主旨（世界主要河流缺水、受污染的现状及原因），再逐个分析空缺处的上下文语境，结合句子间的逻辑关系（转折、对比、因果等）匹配选项：第1空需选转折引出黄河问题的句子，第2空需选与尼罗河过去水量对比的句子，第3空需选介绍水坝相关内容的句子，第4空需选引出全球变暖影响的句子。
【解析】
1. 第1空：前文介绍黄河的地位与作用，后文转折说明其源头干涸，B选项“但现在它有严重问题”符合转折逻辑，衔接自然，故选B；
2. 第2空：前文介绍尼罗河的基本情况，后文说明现在水量，D选项“它过去每年携带320亿立方米的水”与后文形成过去和现在的水量对比，故选D；
3. 第3空：前文提到筑坝是河流干涸的原因之一，后文说明现存水坝数量及作用，E选项“水坝为农田提供水源并发电”衔接后文“它们拦截15%的淡水”，符合语境，故选E；
4. 第4空：后文围绕暖天气、冰川缩小展开，C选项“全球变暖让情况更糟”引出下文关于全球变暖影响的内容，故选C。
【答案】
1. B 2. D 3. E 4. C
【知识点】
英语阅读理解（还原句子）、上下文逻辑衔接
【点评】
本题考查学生对语篇逻辑的理解能力，要求结合前后文语境匹配句子，难度适中，是初中英语常见题型，只要理清句子间的逻辑关系即可正确作答。
【难度系数】
0.6
本题为英语还原信息题，解题思路是：先通读全文把握主旨（世界主要河流缺水、受污染的现状及原因），再逐个分析空缺处的上下文语境，结合句子间的逻辑关系（转折、对比、因果等）匹配选项：第1空需选转折引出黄河问题的句子，第2空需选与尼罗河过去水量对比的句子，第3空需选介绍水坝相关内容的句子，第4空需选引出全球变暖影响的句子。
【解析】
1. 第1空：前文介绍黄河的地位与作用，后文转折说明其源头干涸，B选项“但现在它有严重问题”符合转折逻辑，衔接自然，故选B；
2. 第2空：前文介绍尼罗河的基本情况，后文说明现在水量，D选项“它过去每年携带320亿立方米的水”与后文形成过去和现在的水量对比，故选D；
3. 第3空：前文提到筑坝是河流干涸的原因之一，后文说明现存水坝数量及作用，E选项“水坝为农田提供水源并发电”衔接后文“它们拦截15%的淡水”，符合语境，故选E；
4. 第4空：后文围绕暖天气、冰川缩小展开，C选项“全球变暖让情况更糟”引出下文关于全球变暖影响的内容，故选C。
【答案】
1. B 2. D 3. E 4. C
【知识点】
英语阅读理解（还原句子）、上下文逻辑衔接
【点评】
本题考查学生对语篇逻辑的理解能力，要求结合前后文语境匹配句子，难度适中，是初中英语常见题型，只要理清句子间的逻辑关系即可正确作答。
【难度系数】
0.6
