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一、阅读理解
Scientists are working hard to save the world’s plants from dying out. Storing a seed correctly can make its life longer by hundreds of years. Just like a regular bank, a seed bank is a safe place to save for the future. But instead of money, this special vault (保险库) keeps seeds!
Next, let’s take a look at how scientists store seeds in such a bank!
1. Collecting
Successful seed banking starts with collecting! Along with the seeds, scientists must gather key information about where the plant was found and when the seeds were gathered.
2. Drying out
The drying room is much drier than a regular room. Depending on a seed’s size, it will stay there for between two weeks and six months, slowly drying out.
3. Cleaning up & X - ray (X射线) checks
The seeds are either cleaned by hand or with a machine that takes away dust and damaged ones. Then, an X - ray machine checks a sample (样本) of the seeds to see how many are broken, empty, or have tiny insects inside.
4. Going into the vault
It is now time for most of the seeds to go into the vault! They are stored in airtight containers (密封容器) at - 20℃ in underground rooms. If all goes according to plan, they can survive for hundreds of years.
5. Testing
After a few months, a sample will be tested to see if they have survived, scientists take a careful note of the best ways to germinate (使发芽) each seed so that they can be grown successfully by scientists of the future.
6. Confirming
Once the sample seeds have germinated and flowered, they will be used to confirm whether the seeds were marked correctly in step one. If the information is right, the seeds can be used for important scientific projects.
() 1. Why do scientists store the seeds in a seed bank?
A. To study how fast they grow.
B. To test if they have insects inside.
C. To make sure they can live longer.
D. To collect information about their shape.
() 2. Which is the correct order of the seed banking steps?
A. collect seeds → dry out seeds → clean seeds → store seeds
B. dry out seeds → clean seeds → collect seeds → store seeds
C. clean seeds → store seeds → dry out seeds → collect seeds
D. store seeds → dry out seeds → clean seeds → collect seeds
() 3. What do we know about a seed bank?
A. The seeds usually stay in the drying room for two weeks.
B. If the seeds are not marked correctly, they will be destroyed.
C. Scientists need to record the best ways to germinate each seed.
D. The seeds with insects inside can be repaired by a special machine.
() 4. What is the best title for the text?
A. The journey of a seed
B. How to bank a seed
C. Secrets inside a seed
D. Why seeds need protection
Scientists are working hard to save the world’s plants from dying out. Storing a seed correctly can make its life longer by hundreds of years. Just like a regular bank, a seed bank is a safe place to save for the future. But instead of money, this special vault (保险库) keeps seeds!
Next, let’s take a look at how scientists store seeds in such a bank!
1. Collecting
Successful seed banking starts with collecting! Along with the seeds, scientists must gather key information about where the plant was found and when the seeds were gathered.
2. Drying out
The drying room is much drier than a regular room. Depending on a seed’s size, it will stay there for between two weeks and six months, slowly drying out.
3. Cleaning up & X - ray (X射线) checks
The seeds are either cleaned by hand or with a machine that takes away dust and damaged ones. Then, an X - ray machine checks a sample (样本) of the seeds to see how many are broken, empty, or have tiny insects inside.
4. Going into the vault
It is now time for most of the seeds to go into the vault! They are stored in airtight containers (密封容器) at - 20℃ in underground rooms. If all goes according to plan, they can survive for hundreds of years.
5. Testing
After a few months, a sample will be tested to see if they have survived, scientists take a careful note of the best ways to germinate (使发芽) each seed so that they can be grown successfully by scientists of the future.
6. Confirming
Once the sample seeds have germinated and flowered, they will be used to confirm whether the seeds were marked correctly in step one. If the information is right, the seeds can be used for important scientific projects.
() 1. Why do scientists store the seeds in a seed bank?
A. To study how fast they grow.
B. To test if they have insects inside.
C. To make sure they can live longer.
D. To collect information about their shape.
() 2. Which is the correct order of the seed banking steps?
A. collect seeds → dry out seeds → clean seeds → store seeds
B. dry out seeds → clean seeds → collect seeds → store seeds
C. clean seeds → store seeds → dry out seeds → collect seeds
D. store seeds → dry out seeds → clean seeds → collect seeds
() 3. What do we know about a seed bank?
A. The seeds usually stay in the drying room for two weeks.
B. If the seeds are not marked correctly, they will be destroyed.
C. Scientists need to record the best ways to germinate each seed.
D. The seeds with insects inside can be repaired by a special machine.
() 4. What is the best title for the text?
A. The journey of a seed
B. How to bank a seed
C. Secrets inside a seed
D. Why seeds need protection
答案
C
A
C
B
A
C
B
解析
【解析】
1. 第1题：根据第一段“Storing a seed correctly can make its life longer by hundreds of years. Just like a regular bank, a seed bank is a safe place to save for the future.”可知，种子库储存种子是为了延长种子的存活时间，故选C。
2. 第2题：根据文中种子储存的步骤：1.Collecting（收集）、2.Drying out（干燥）、3.Cleaning up & X-ray checks（清理与X光检查）、4.Going into the vault（存入保险库），正确顺序为收集种子→干燥种子→清理种子→储存种子，故选A。
3. 第3题：根据步骤5“scientists take a careful note of the best ways to germinate (使发芽) each seed”可知，科学家需要记录每种种子的最佳发芽方法，C选项正确；A选项中种子在干燥房的时间是2周到6个月，并非通常两周；B选项文中未提及标记错误的种子会被销毁；D选项有昆虫的种子是被检测出来，而非修复，故选C。
4. 第4题：文章主要介绍了科学家在种子库储存种子的具体步骤，核心是“如何储存种子”，故最佳标题为How to bank a seed，选B。
【答案】
C；A；C；B
【知识点】
细节理解题；主旨大意题；阅读理解定位技巧
【点评】
本文围绕种子库储存种子的流程展开，题目侧重考查对文章细节信息的定位提取与主旨的归纳能力，学生需仔细研读原文内容，精准匹配选项与原文信息。
【难度系数】
0.6
1. 第1题：根据第一段“Storing a seed correctly can make its life longer by hundreds of years. Just like a regular bank, a seed bank is a safe place to save for the future.”可知，种子库储存种子是为了延长种子的存活时间，故选C。
2. 第2题：根据文中种子储存的步骤：1.Collecting（收集）、2.Drying out（干燥）、3.Cleaning up & X-ray checks（清理与X光检查）、4.Going into the vault（存入保险库），正确顺序为收集种子→干燥种子→清理种子→储存种子，故选A。
3. 第3题：根据步骤5“scientists take a careful note of the best ways to germinate (使发芽) each seed”可知，科学家需要记录每种种子的最佳发芽方法，C选项正确；A选项中种子在干燥房的时间是2周到6个月，并非通常两周；B选项文中未提及标记错误的种子会被销毁；D选项有昆虫的种子是被检测出来，而非修复，故选C。
4. 第4题：文章主要介绍了科学家在种子库储存种子的具体步骤，核心是“如何储存种子”，故最佳标题为How to bank a seed，选B。
【答案】
C；A；C；B
【知识点】
细节理解题；主旨大意题；阅读理解定位技巧
【点评】
本文围绕种子库储存种子的流程展开，题目侧重考查对文章细节信息的定位提取与主旨的归纳能力，学生需仔细研读原文内容，精准匹配选项与原文信息。
【难度系数】
0.6
