Ⅴ.阅读理解。
The Yellow River starts in the Qinghai-Tibet Plateau(青藏高原) and runs eastwards across
China. On its way,it passes through the Loess Plateau(黄土高原)—a place with a lot of soft soil(土
壤) and few plants. When it rains,the soil easily washes into the river,turning the water brown. It
looks like "half water,half sand".
So the Yellow River is famous for its brown water for many years. But in 2025,something
amazing happened:parts of the river became clear! People saw clean water at Hukou Waterfall in
Shaanxi Province. This surprised everyone.
▲ First,less rain fell in early 2025. The Loess Plateau got 35% less rain than usual. Less
rain means less soil washes into the river. Second,people have worked for years to protect the land.
They planted trees and built small dams(大坝) to stop soil from being washed away. Today,green
plants grow on 63% of the Loess Plateau. In 1999,it was only about 31%. That's why its water is
clearer today!
However,the clear water brings both hope and problems. On the good side,more fish can come back,
and there may be few floods(洪水). But on the other side,it can wear away riverbanks faster,and less soil
getting to the ocean means wet lands by the sea are getting smaller.
Nature and humans should work together for a better future. Scientists are now studying how
to keep the river healthy while enjoying its green and clear water. People near the river are also
learning new ways to farm so that they don't hurt the land or the water. Everyone agrees that
protecting the Yellow River is important for both its beauty and its role in history.
()1. People are surprised that the Yellow River .
A. ends in the Qinghai-Tibet Plateau B. looks brown for many years
C. gets more water D. becomes much clearer
()2. Which of the following can be put in ▲?
A. There are two main reasons. B. When did this happen?
C. Cleaning the water is important. D. How did it affect people?
()3. What percentage(百分比) of green plants in the Loess Plateau has increased since 1999?
A. About 31%. B. Around 32%. C. Only 35%. D. Nearly 63%.
()4. What does the writer think of the change?
A. It makes no real difference. B. It's a lot of help for fish.
C. It brings no bad influence. D. It's good for the riverbank.
()5. What is the main idea of the passage?
A. New ways are found to make the river clearer.
B. The Yellow River is famous for its beautiful scenery.
C. Farming near the river always hurts the land and water.
D. Why the Yellow River turns green and why we should protect it.

Ⅴ.1—5 D A B B D

【分析】
本题为英语阅读理解题，需结合原文内容逐题分析：第1题是细节理解题，定位原文中人们惊讶的事件；第2题是句子还原题，需根据上下文逻辑选择合适语句；第3题是数字计算题，需提取原文植被覆盖率数据计算差值；第4题是作者态度题，需找原文中作者对黄河变化的评价；第5题是主旨大意题，需总结文章核心内容。
【解析】
1. 第1题：定位原文第二段“But in 2025,something amazing happened:parts of the river became clear! This surprised everyone.”可知，人们惊讶于黄河部分河段变清澈，对应选项D。
2. 第2题：▲后内容分两点说明黄河变清的原因（少雨、土地保护），故前文应引出“两个主要原因”，对应选项A。
3. 第3题：原文提到2025年黄土高原植被覆盖率为63%，1999年为31%，增长值为63%-31%=32%，对应选项B。
4. 第4题：原文第四段“On the good side,more fish can come back”说明变化对鱼类有帮助，对应选项B；A、C、D均与原文“有好有坏”“侵蚀河岸”等表述不符。
5. 第5题：文章先讲黄河变清的原因，最后强调要保护黄河，对应选项D。
【答案】
1—5 D A B B D
【知识点】
阅读理解、细节理解、主旨大意
【点评】
本文围绕黄河生态变化展开，考查学生的信息定位、逻辑推理及主旨归纳能力，需准确提取原文关键信息解题。
【难度系数】
0.6