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Ⅲ.Read and choose the best answer.阅读并选择最佳答案。
The Mississippi River is one of the most important rivers in the United States. It runs about 3,780 kilometres from its source in Minnesota to its mouth in the Gulf of Mexico. As the second longest river in North America,it runs through or touches ten states.
For centuries, the Mississippi has played an important role in American life. Native Americans first lived along its banks. Later, European explorers used it to travel inside the country. During the 1800s,steamboats carried goods and people along the river, helping towns and cities grow. Today,it is still a main route for ships that carry things.
The Mississippi is often called the "Father of Waters" and serves as America's "mother river". It provides drinking water for millions of people,supports farming through irrigation,and is home to diverse wildlife. However,like many rivers,it faces challenges like pollution that require ongoing protection efforts.
(
A. For living. B. For travelling. C. For steamboat transport.
(
A. Because it runs many states.
B. Because it supports farming.
C. Because it benefits both people and wildlife.
(
A.珍惜的 B.多样的 C.濒危的
(
A. Pollution problems.
B. Lack of water for irrigation.
C. Overcrowding of steamboats.
(
A. A River in Need
B. The Heart of America
C. A River for Travelling
The Mississippi River is one of the most important rivers in the United States. It runs about 3,780 kilometres from its source in Minnesota to its mouth in the Gulf of Mexico. As the second longest river in North America,it runs through or touches ten states.
For centuries, the Mississippi has played an important role in American life. Native Americans first lived along its banks. Later, European explorers used it to travel inside the country. During the 1800s,steamboats carried goods and people along the river, helping towns and cities grow. Today,it is still a main route for ships that carry things.
The Mississippi is often called the "Father of Waters" and serves as America's "mother river". It provides drinking water for millions of people,supports farming through irrigation,and is home to diverse wildlife. However,like many rivers,it faces challenges like pollution that require ongoing protection efforts.
(
C
)12. What was the main purpose of the river in the 1800s?A. For living. B. For travelling. C. For steamboat transport.
(
C
)13. Why is the Mississippi called America's "mother river"?A. Because it runs many states.
B. Because it supports farming.
C. Because it benefits both people and wildlife.
(
B
)14. What does the underlined word "diverse" mean in Chinese?A.珍惜的 B.多样的 C.濒危的
(
A
)15. What challenge does the Mississippi face today?A. Pollution problems.
B. Lack of water for irrigation.
C. Overcrowding of steamboats.
(
B
)16. Which is the best title of this passage?A. A River in Need
B. The Heart of America
C. A River for Travelling
答案
Ⅲ.12. C 13. C 14. B 15. A 16. B
解析
【分析】
做这篇阅读理解题的核心思路是先圈出每道题干的关键词，带着关键词回到原文定位对应段落和语句，将选项和原文内容逐一比对，排除不符合的错误选项，选出最贴合原文的答案：
1. 做第12题先圈出关键词"1800s"，回到第二段找对应时间的描述；
2. 第13题圈出关键词"mother river"，定位第三段找称呼对应的原因；
3. 第14题结合划线词所在的上下文语境，推测单词的中文含义；
4. 第15题圈出关键词"challenge"，在文末找到河流面临的问题；
5. 第16题通读全文，梳理文章核心讲述的内容，选出最贴合全文主旨的标题。
【解析】
12. 定位原文第二段"During the 1800s,steamboats carried goods and people along the river, helping towns and cities grow."，可知19世纪这条河的主要作用是供蒸汽船运输货物和人员，A选项"供居住"、B选项"用于旅行"都不符合当时的核心用途，因此选C。
13. 定位原文第三段，密西西比河被称为美国"母亲河"的原因是它为数百万人提供饮用水、通过灌溉支撑农业生产，同时还是各类野生动物的栖息地，对人类和野生动物都有巨大益处。A选项"流经很多州"不是被称为母亲河的原因，B选项"支撑农业"表述过于片面，因此选C。
14. 划线单词diverse修饰后文的wildlife（野生动物），结合上下文河流可以孕育大量不同种类的生物的语境，可以推测出这个单词的含义是"多样的"，因此选B。
15. 定位原文最后一句"However,like many rivers,it faces challenges like pollution that require ongoing protection efforts."，可知密西西比河如今面临的挑战是污染问题，B选项灌溉缺水、C选项蒸汽船过度拥挤在原文中均无提及，因此选A。
16. 全文围绕密西西比河展开，介绍它是美国最重要的河流之一，被称为"众水之父"和美国的母亲河，对美国的交通、民生、生态都有不可替代的重要作用，相当于美国的命脉核心。A选项只片面提到河流需要保护，C选项只突出河流的旅行属性，都不能概括全文内容，因此最佳标题是B。
【答案】
12. C 13. C 14. B 15. A 16. B
【知识点】
阅读理解细节查找，词义猜测，主旨归纳
【点评】
这篇阅读难度适中，大部分题目都可以通过原文直接定位得到答案，既考察学生快速抓取文本关键信息的能力，也兼顾了词义推测、主旨选择的能力考察，适合巩固基础的阅读解题技巧，帮助学生养成依托原文找答案的做题习惯。
【难度系数】
0.7
做这篇阅读理解题的核心思路是先圈出每道题干的关键词，带着关键词回到原文定位对应段落和语句，将选项和原文内容逐一比对，排除不符合的错误选项，选出最贴合原文的答案：
1. 做第12题先圈出关键词"1800s"，回到第二段找对应时间的描述；
2. 第13题圈出关键词"mother river"，定位第三段找称呼对应的原因；
3. 第14题结合划线词所在的上下文语境，推测单词的中文含义；
4. 第15题圈出关键词"challenge"，在文末找到河流面临的问题；
5. 第16题通读全文，梳理文章核心讲述的内容，选出最贴合全文主旨的标题。
【解析】
12. 定位原文第二段"During the 1800s,steamboats carried goods and people along the river, helping towns and cities grow."，可知19世纪这条河的主要作用是供蒸汽船运输货物和人员，A选项"供居住"、B选项"用于旅行"都不符合当时的核心用途，因此选C。
13. 定位原文第三段，密西西比河被称为美国"母亲河"的原因是它为数百万人提供饮用水、通过灌溉支撑农业生产，同时还是各类野生动物的栖息地，对人类和野生动物都有巨大益处。A选项"流经很多州"不是被称为母亲河的原因，B选项"支撑农业"表述过于片面，因此选C。
14. 划线单词diverse修饰后文的wildlife（野生动物），结合上下文河流可以孕育大量不同种类的生物的语境，可以推测出这个单词的含义是"多样的"，因此选B。
15. 定位原文最后一句"However,like many rivers,it faces challenges like pollution that require ongoing protection efforts."，可知密西西比河如今面临的挑战是污染问题，B选项灌溉缺水、C选项蒸汽船过度拥挤在原文中均无提及，因此选A。
16. 全文围绕密西西比河展开，介绍它是美国最重要的河流之一，被称为"众水之父"和美国的母亲河，对美国的交通、民生、生态都有不可替代的重要作用，相当于美国的命脉核心。A选项只片面提到河流需要保护，C选项只突出河流的旅行属性，都不能概括全文内容，因此最佳标题是B。
【答案】
12. C 13. C 14. B 15. A 16. B
【知识点】
阅读理解细节查找，词义猜测，主旨归纳
【点评】
这篇阅读难度适中，大部分题目都可以通过原文直接定位得到答案，既考察学生快速抓取文本关键信息的能力，也兼顾了词义推测、主旨选择的能力考察，适合巩固基础的阅读解题技巧，帮助学生养成依托原文找答案的做题习惯。
【难度系数】
0.7
