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The Clark's nutcracker, a bird found in North America, is a memory superstar. Every autumn, it collects and buries tens of thousands of pine seeds(松子） to eat during winter. But how does it remember where all those seeds are hidden? Scientists wanted to understand just how good its memory is and how it compares to other animals.
Researchers studied the Clark's nutcracker in the wild and in labs. They watched the bird bury seeds and then tested its ability to find them weeks or even months later. The team also compared the Clark's nutcracker's memory to that of other animals, like the squirrel and the chimpanzee(黑猩猩）, by setting up similar memory tests. Researchers examined how many seeds they could find and how quickly they did it.
The study finds that the Clark's nutcracker can remember the locations of up to 20,000 seed caches(隐藏物)! It finds about 90% of its hidden seeds, even after six months. However, the squirrel only remembers about 60% of its buried nuts, and the chimpanzee, known for its being clever, has difficulty with similar tasks. The Clark's nutcracker's brain, especially the part called the hippocampus(which handles memory and emotions), is much larger relative to its body size than in most other birds.
This research shows that the Clark's nutcracker has one of the best memories in the animal kingdom—better than many mammals! Scientists think this good memory developed because the bird depends on hidden seeds to live through difficult winters. Some researchers believe studying the Clark's nutcracker's brain could help us understand human memory better. Others say it's a great example of how animals adapt to(适应） their environment in amazing ways.
6. What is the primary reason why the Clark's nutcracker collects and buries pine seeds?
A. To store food for winter.
B. To hide food from other birds.
C. To trade them with other birds.
D. To fly to warmer areas.
7. What percent of hidden seeds can the Clark's nutcracker find after six months?
A. About 60%.
B. About 70%.
C. About 80%.
D. About 90%.
8. How did researchers test the memory of the Clark's nutcracker compared to that of other animals?
A. By comparing their physical strength.
B. By looking at their feeding habits.
C. By setting up similar memory tests.
D. By examining how fast they can fly.
9. What might be the advantage of studying the Clark's nutcracker's brain?
A. It could help in bird watching programmes.
B. It may lead to progress in memory science.
C. It could improve wildlife protection efforts.
D. It may help animals avoid natural enemies.
10. What is the best title for the passage?
A. The Diet and Habits of the Clark's Nutcracker
B. The Amazing Memory of the Clark's Nutcracker
C. The Importance of Pine Seeds to Birds
D. The Role of the Clark's Nutcracker in the Forest
The Clark's nutcracker, a bird found in North America, is a memory superstar. Every autumn, it collects and buries tens of thousands of pine seeds(松子） to eat during winter. But how does it remember where all those seeds are hidden? Scientists wanted to understand just how good its memory is and how it compares to other animals.
Researchers studied the Clark's nutcracker in the wild and in labs. They watched the bird bury seeds and then tested its ability to find them weeks or even months later. The team also compared the Clark's nutcracker's memory to that of other animals, like the squirrel and the chimpanzee(黑猩猩）, by setting up similar memory tests. Researchers examined how many seeds they could find and how quickly they did it.
The study finds that the Clark's nutcracker can remember the locations of up to 20,000 seed caches(隐藏物)! It finds about 90% of its hidden seeds, even after six months. However, the squirrel only remembers about 60% of its buried nuts, and the chimpanzee, known for its being clever, has difficulty with similar tasks. The Clark's nutcracker's brain, especially the part called the hippocampus(which handles memory and emotions), is much larger relative to its body size than in most other birds.
This research shows that the Clark's nutcracker has one of the best memories in the animal kingdom—better than many mammals! Scientists think this good memory developed because the bird depends on hidden seeds to live through difficult winters. Some researchers believe studying the Clark's nutcracker's brain could help us understand human memory better. Others say it's a great example of how animals adapt to(适应） their environment in amazing ways.
6. What is the primary reason why the Clark's nutcracker collects and buries pine seeds?
A. To store food for winter.
B. To hide food from other birds.
C. To trade them with other birds.
D. To fly to warmer areas.
7. What percent of hidden seeds can the Clark's nutcracker find after six months?
A. About 60%.
B. About 70%.
C. About 80%.
D. About 90%.
8. How did researchers test the memory of the Clark's nutcracker compared to that of other animals?
A. By comparing their physical strength.
B. By looking at their feeding habits.
C. By setting up similar memory tests.
D. By examining how fast they can fly.
9. What might be the advantage of studying the Clark's nutcracker's brain?
A. It could help in bird watching programmes.
B. It may lead to progress in memory science.
C. It could improve wildlife protection efforts.
D. It may help animals avoid natural enemies.
10. What is the best title for the passage?
A. The Diet and Habits of the Clark's Nutcracker
B. The Amazing Memory of the Clark's Nutcracker
C. The Importance of Pine Seeds to Birds
D. The Role of the Clark's Nutcracker in the Forest
答案
6-10 ADCBB
解析
【分析】
本题为英语阅读理解题，解题思路是：先通读全文了解大意，再针对每个小题的题干关键词，回到原文定位对应信息，逐一比对选项与原文内容，排除错误选项得出答案。
【解析】
6. 题干问克拉克星鸦收集埋藏松子的主要原因，定位原文第一段“Every autumn, it collects and buries tens of thousands of pine seeds to eat during winter.”，可知目的是储存冬季食物，对应选项A。
7. 题干问六个月后克拉克星鸦能找到隐藏种子的比例，定位原文第三段“It finds about 90% of its hidden seeds, even after six months.”，对应选项D。
8. 题干问研究人员如何对比克拉克星鸦与其他动物的记忆力，定位原文第二段“The team also compared the Clark's nutcracker's memory to that of other animals... by setting up similar memory tests.”，对应选项C。
9. 题干问研究克拉克星鸦大脑的优势，定位原文第四段“Some researchers believe studying the Clark's nutcracker's brain could help us understand human memory better.”，即有助于记忆科学的进步，对应选项B。
10. 题干问文章最佳标题，全文围绕克拉克星鸦的超强记忆展开，对应选项B。
【答案】
6-10 ADCBB
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本题为英语阅读基础题型，主要考查学生快速定位原文细节、归纳文章主旨的能力，难度适中，只要认真梳理原文信息即可正确作答。
【难度系数】
0.7
本题为英语阅读理解题，解题思路是：先通读全文了解大意，再针对每个小题的题干关键词，回到原文定位对应信息，逐一比对选项与原文内容，排除错误选项得出答案。
【解析】
6. 题干问克拉克星鸦收集埋藏松子的主要原因，定位原文第一段“Every autumn, it collects and buries tens of thousands of pine seeds to eat during winter.”，可知目的是储存冬季食物，对应选项A。
7. 题干问六个月后克拉克星鸦能找到隐藏种子的比例，定位原文第三段“It finds about 90% of its hidden seeds, even after six months.”，对应选项D。
8. 题干问研究人员如何对比克拉克星鸦与其他动物的记忆力，定位原文第二段“The team also compared the Clark's nutcracker's memory to that of other animals... by setting up similar memory tests.”，对应选项C。
9. 题干问研究克拉克星鸦大脑的优势，定位原文第四段“Some researchers believe studying the Clark's nutcracker's brain could help us understand human memory better.”，即有助于记忆科学的进步，对应选项B。
10. 题干问文章最佳标题，全文围绕克拉克星鸦的超强记忆展开，对应选项B。
【答案】
6-10 ADCBB
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本题为英语阅读基础题型，主要考查学生快速定位原文细节、归纳文章主旨的能力，难度适中，只要认真梳理原文信息即可正确作答。
【难度系数】
0.7
