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Wolves may seem scary, but they could help save Scotland's forests! A new study shows that bringing wolves back can make the forests healthy. Why? Because wolves can help trees grow, and trees are really important. They take in carbon dioxide (CO₂), a gas that makes the world warmer.
In the UK today, there are no wild wolves. Over 250 years ago,
people killed all the wolves in Scotland. Without wolves, red deer have no natural enemies (天敌), so their numbers became very large. Red deer love to eat young trees, and this stops forests from growing. Now, only 4% of Scotland has forests, much less than in many other countries.
Scientists used a computer to see what would happen if wolves came back. They found that 167 wolves could control (控制) the number of red deer. Then, more trees could grow and take in more carbon dioxide (CO₂) each year!
Some people might not like this idea. Farmers are worried that wolves will make their cows and sheep in danger. But the scientists want to share this new information. They hope people will see the good things wolves can do for nature.
(
A. Wolves.
B. Trees.
C. People.
D. Deer.
(
A. Because red deer have lots of enemies.
B. Because red deer eat too many trees.
C. Because people cut down so many trees.
D. Because wolves stop forests from growing.
(
A. eat a lot of young trees
B. protect cows and sheep
C. make friends with deer
D. do good things for nature
(
A. Forests: Green World
B. Computers: Good Helpers
C. Deer: Great Friends
D. Wolves: Helpful Animals
In the UK today, there are no wild wolves. Over 250 years ago,
people killed all the wolves in Scotland. Without wolves, red deer have no natural enemies (天敌), so their numbers became very large. Red deer love to eat young trees, and this stops forests from growing. Now, only 4% of Scotland has forests, much less than in many other countries.
Scientists used a computer to see what would happen if wolves came back. They found that 167 wolves could control (控制) the number of red deer. Then, more trees could grow and take in more carbon dioxide (CO₂) each year!
Some people might not like this idea. Farmers are worried that wolves will make their cows and sheep in danger. But the scientists want to share this new information. They hope people will see the good things wolves can do for nature.
(
B
) 27. What does the underlined word "They" in Paragraph 1 refer to?A. Wolves.
B. Trees.
C. People.
D. Deer.
(
B
) 28. According to Paragraph 2, why does only 4% of Scotland have forests?A. Because red deer have lots of enemies.
B. Because red deer eat too many trees.
C. Because people cut down so many trees.
D. Because wolves stop forests from growing.
(
D
) 29. From Paragraphs 3&4, we can learn that wolves can .A. eat a lot of young trees
B. protect cows and sheep
C. make friends with deer
D. do good things for nature
(
D
) 30. Which of the following is the best title for the passage?A. Forests: Green World
B. Computers: Good Helpers
C. Deer: Great Friends
D. Wolves: Helpful Animals
答案
27. B 28. B 29. D 30. D
解析
【分析】
1. 第27题是代词指代题，需定位到第一段划线词“They”的位置，往前找指代的名词，结合前后文逻辑和常识判断指代对象；
2. 第28题是细节理解题，根据题干关键词定位到第二段，提取对应原因；
3. 第29题是细节理解题，定位到第三、四段，梳理狼的作用相关信息；
4. 第30题是主旨大意题，通读全文，归纳核心内容确定标题。
【解析】
27. 第一段划线词所在句前一句提到“wolves can help trees grow, and trees are really important”，后一句说明“They take in carbon dioxide”，结合常识（树木吸收二氧化碳），可知“They”指代trees，故选B。
28. 根据第二段内容，苏格兰没有狼后红鹿数量大增，红鹿爱吃幼树，阻止森林生长，导致森林占比仅4%，原因是红鹿吃太多树，故选B。
29. 第三段提到狼能控制红鹿数量，让更多树生长；第四段提到狼对自然有好处，可知狼对自然有益，故选D。
30. 全文围绕狼帮助森林生长、对自然有帮助展开，核心是狼是有益的动物，最佳标题为“Wolves: Helpful Animals”，故选D。
【答案】
27. B 28. B 29. D 30. D
【知识点】
代词指代、细节理解、主旨大意
【点评】
本题为英语阅读理解题，考查代词指代、细节查找及主旨归纳能力，文本围绕狼对生态的积极作用展开，难度适中，需学生精准定位原文信息并理解主旨。
【难度系数】
0.6
1. 第27题是代词指代题，需定位到第一段划线词“They”的位置，往前找指代的名词，结合前后文逻辑和常识判断指代对象；
2. 第28题是细节理解题，根据题干关键词定位到第二段，提取对应原因；
3. 第29题是细节理解题，定位到第三、四段，梳理狼的作用相关信息；
4. 第30题是主旨大意题，通读全文，归纳核心内容确定标题。
【解析】
27. 第一段划线词所在句前一句提到“wolves can help trees grow, and trees are really important”，后一句说明“They take in carbon dioxide”，结合常识（树木吸收二氧化碳），可知“They”指代trees，故选B。
28. 根据第二段内容，苏格兰没有狼后红鹿数量大增，红鹿爱吃幼树，阻止森林生长，导致森林占比仅4%，原因是红鹿吃太多树，故选B。
29. 第三段提到狼能控制红鹿数量，让更多树生长；第四段提到狼对自然有好处，可知狼对自然有益，故选D。
30. 全文围绕狼帮助森林生长、对自然有帮助展开，核心是狼是有益的动物，最佳标题为“Wolves: Helpful Animals”，故选D。
【答案】
27. B 28. B 29. D 30. D
【知识点】
代词指代、细节理解、主旨大意
【点评】
本题为英语阅读理解题，考查代词指代、细节查找及主旨归纳能力，文本围绕狼对生态的积极作用展开，难度适中，需学生精准定位原文信息并理解主旨。
【难度系数】
0.6
