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C
The “April snow” is here! It's not real snow—it's catkins（柳絮）from willows in spring. For some people, this “snow” is not welcomed. Catkins can cause trouble, making people's noses, eyes, and skin uncomfortable.
In fact, there are two genders（性别）of willows: male and female. In spring, the female willows grow lots of flowers. When these flowers finish growing, they begin to produce cotton-like seeds（种子）that fly in the air.
Luckily, scientists have found some ways to solve the problem of catkins. One is to change the gender of willows. People cut off the branches（树枝）of female willows and change them with branches from male willows. This will cut down the number of catkins. However, this way is slow and expensive. A skilled worker can do the change on less than ten willows a day.
Another way is giving willows a special medicine. Just spray（喷洒）the medicine on willows right before the catkins form, and then it will quickly lower the number of catkins. Still, people need to be careful about how much of the medicine they use and when they use it, or they might hurt the environment.
(
A. Cotton fields.
B. Willow seeds.
C. White flowers.
D. Spring snowfalls.
(
A. To make willows beautiful.
B. To collect the leaves of willows.
C. To stop the produce of catkins.
D. To separate willows by genders.
(
A. Before willows develop leaves.
B. Before the forming of flowers.
C. After the flowers finish growing.
D. After the changing of branches.
(
A. How to move catkins.
B. How to plant willows.
C. How to cut down catkins.
D. How to protect willows.
D
The “April snow” is here! It's not real snow—it's catkins（柳絮）from willows in spring. For some people, this “snow” is not welcomed. Catkins can cause trouble, making people's noses, eyes, and skin uncomfortable.
In fact, there are two genders（性别）of willows: male and female. In spring, the female willows grow lots of flowers. When these flowers finish growing, they begin to produce cotton-like seeds（种子）that fly in the air.
Luckily, scientists have found some ways to solve the problem of catkins. One is to change the gender of willows. People cut off the branches（树枝）of female willows and change them with branches from male willows. This will cut down the number of catkins. However, this way is slow and expensive. A skilled worker can do the change on less than ten willows a day.
Another way is giving willows a special medicine. Just spray（喷洒）the medicine on willows right before the catkins form, and then it will quickly lower the number of catkins. Still, people need to be careful about how much of the medicine they use and when they use it, or they might hurt the environment.
(
B
)23. What does the “April snow” refer to?A. Cotton fields.
B. Willow seeds.
C. White flowers.
D. Spring snowfalls.
(
C
)24. Why do people cut off the branches of female willows?A. To make willows beautiful.
B. To collect the leaves of willows.
C. To stop the produce of catkins.
D. To separate willows by genders.
(
C
)25. When is the best time to spray medicine on willows?A. Before willows develop leaves.
B. Before the forming of flowers.
C. After the flowers finish growing.
D. After the changing of branches.
(
C
)26. What's the main idea of the passage?A. How to move catkins.
B. How to plant willows.
C. How to cut down catkins.
D. How to protect willows.
D
答案
23.B 24.C 25.C 26.C
解析
【分析】
本题为阅读理解题，需结合原文细节逐一分析每个问题：
1. 第23题：定位原文第一段和第二段，明确“April snow”的指代对象；
2. 第24题：找到剪雌柳树枝的目的相关描述，匹配选项；
3. 第25题：结合柳絮形成的时间，确定喷药的最佳时机；
4. 第26题：梳理全文内容，归纳核心主旨。
【解析】
23题：根据第一段“It's not real snow—it's catkins from willows in spring.”和第二段“produce cotton-like seeds that fly in the air”可知，“April snow”是柳树的种子，对应选项B。
24题：根据第三段“People cut off the branches of female willows and change them with branches from male willows. This will cut down the number of catkins.”可知，剪雌柳树枝是为了减少柳絮的产生，对应选项C。
25题：根据第四段“Just spray the medicine on willows right before the catkins form”，结合第二段“when these flowers finish growing, they begin to produce cotton-like seeds that fly in the air”可知，柳絮在花谢后形成，因此喷药最佳时间是花谢后，对应选项C。
26题：全文围绕柳絮带来的问题及两种减少柳絮的方法展开，核心是如何减少柳絮，对应选项C。
【答案】
23.B 24.C 25.C 26.C
【知识点】
阅读理解（细节理解题）、阅读理解（主旨大意题）
【点评】
本题为科普类阅读理解题，侧重考查学生快速定位原文细节和归纳主旨的能力，题目难度适中，只要认真阅读原文即可准确作答。
【难度系数】
0.5
本题为阅读理解题，需结合原文细节逐一分析每个问题：
1. 第23题：定位原文第一段和第二段，明确“April snow”的指代对象；
2. 第24题：找到剪雌柳树枝的目的相关描述，匹配选项；
3. 第25题：结合柳絮形成的时间，确定喷药的最佳时机；
4. 第26题：梳理全文内容，归纳核心主旨。
【解析】
23题：根据第一段“It's not real snow—it's catkins from willows in spring.”和第二段“produce cotton-like seeds that fly in the air”可知，“April snow”是柳树的种子，对应选项B。
24题：根据第三段“People cut off the branches of female willows and change them with branches from male willows. This will cut down the number of catkins.”可知，剪雌柳树枝是为了减少柳絮的产生，对应选项C。
25题：根据第四段“Just spray the medicine on willows right before the catkins form”，结合第二段“when these flowers finish growing, they begin to produce cotton-like seeds that fly in the air”可知，柳絮在花谢后形成，因此喷药最佳时间是花谢后，对应选项C。
26题：全文围绕柳絮带来的问题及两种减少柳絮的方法展开，核心是如何减少柳絮，对应选项C。
【答案】
23.B 24.C 25.C 26.C
【知识点】
阅读理解（细节理解题）、阅读理解（主旨大意题）
【点评】
本题为科普类阅读理解题，侧重考查学生快速定位原文细节和归纳主旨的能力，题目难度适中，只要认真阅读原文即可准确作答。
【难度系数】
0.5
