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五、阅读理解。
The "April snow" is here! It's not real snow, of course—it's catkins from willows and poplar trees in spring. For some people, this "snow" is not welcomed. Catkins can cause allergies, making people's noses, eyes, and skin uncomfortable.
In spring, female trees grow lots of flowers. When these flowers finish growing, they bear cotton—like seeds that spread through the air.
Luckily, scientists have found many ways to control catkins. Doing "gender change surgery" on willow and poplar trees is one of them. People cut off the branches of female trees and replace them with branches from male trees. This cuts down the number of catkins. However, this way is slow and expensive. A skilled worker can do the "surgery" on less than ten trees a day. Scientists in Wuxi, Jiangsu, use special injection to reduce the number of catkins on trees. These injections make the trees mainly use their energy to grow bigger and get more leaves, not to reproduce and make catkins. Xu Qinming, an expert in Wuxi, told Science and Technology Daily that this method is safe for the trees. However, the trees need to get injections every year to keep the catkin numbers under control.
Besides injections, the trees can take "medicine". The medicine can be sprayed onto the trees before the catkins form, which can quickly reduce catkin numbers. 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. the snow in winter B. branches from male trees
C. special injections D. catkins from willow and poplar trees
(
A. One. B. Two. C. Three. D. Four.
(
A. It costs a great deal of money. B. Trees are needed to be injected every year.
C. It needs many skilled workers to do it.D. It's safe for the trees and environment.
The "April snow" is here! It's not real snow, of course—it's catkins from willows and poplar trees in spring. For some people, this "snow" is not welcomed. Catkins can cause allergies, making people's noses, eyes, and skin uncomfortable.
In spring, female trees grow lots of flowers. When these flowers finish growing, they bear cotton—like seeds that spread through the air.
Luckily, scientists have found many ways to control catkins. Doing "gender change surgery" on willow and poplar trees is one of them. People cut off the branches of female trees and replace them with branches from male trees. This cuts down the number of catkins. However, this way is slow and expensive. A skilled worker can do the "surgery" on less than ten trees a day. Scientists in Wuxi, Jiangsu, use special injection to reduce the number of catkins on trees. These injections make the trees mainly use their energy to grow bigger and get more leaves, not to reproduce and make catkins. Xu Qinming, an expert in Wuxi, told Science and Technology Daily that this method is safe for the trees. However, the trees need to get injections every year to keep the catkin numbers under control.
Besides injections, the trees can take "medicine". The medicine can be sprayed onto the trees before the catkins form, which can quickly reduce catkin numbers. 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.
(
D
)1. According to the passage, cause some people feel uncomfortable.A. the snow in winter B. branches from male trees
C. special injections D. catkins from willow and poplar trees
(
C
)2. How many ways are mentioned to deal with catkins in this passage?A. One. B. Two. C. Three. D. Four.
(
B
)3. What's the disadvantage of using injections according to the passage?A. It costs a great deal of money. B. Trees are needed to be injected every year.
C. It needs many skilled workers to do it.D. It's safe for the trees and environment.
答案
五、1. D 2. C 3. B
解析
【分析】
这是一篇科普类英语阅读理解题，全部为细节理解类题型，解题思路如下：先通读题干标记每道题的核心关键词，带着关键词返回原文对应段落定位内容，逐一比对选项和原文信息即可选出正确答案。第1题核心关键词是"make people uncomfortable"，直接回文章开头找对应表述；第2题核心关键词是"ways to deal with catkins"，逐段梳理文中提到的所有治理飞絮的方法，统计数量即可；第3题核心关键词是"disadvantage of using injections"，定位到介绍注射治理方法的段落，找到对应的缺点描述排除错误选项即可。
【解析】
1. 第1题：根据原文第一段"Catkins can cause allergies, making people's noses, eyes, and skin uncomfortable."，明确说明是杨柳的飞絮会让人们产生不适，A选项冬天的雪、B选项雄树的树枝、C选项特殊注射都不符合原文描述，因此选D。
2. 第2题：梳理全文提到的治理飞絮的方法：① 给杨柳树做"变性手术"，砍掉雌树枝条替换成雄树枝条；② 给树木注射特殊药剂减少飞絮；③ 在飞絮形成前给树木喷洒专用药物，一共3种方法，对应选项C。
3. 第3题：定位到原文介绍注射法的段落，末尾明确说明"However, the trees need to get injections every year to keep the catkin numbers under control."，也就是注射法的缺点是树木每年都需要注射才能维持效果。A选项花费高是"变性手术"的缺点，C选项需要大量熟练工人也是"变性手术"的特点，D选项是注射法的优点，均不符合题意，因此选B。
【答案】
1. D 2. C 3. B
【知识点】
英语细节阅读，说明文信息定位
【点评】
本题属于难度适中的科普类阅读，所有题目答案都可以直接从原文中找到对应依据，不需要额外推理，解题的核心是准确定位题干对应的原文区域，注意不要混淆不同治理方法的优缺点，统计方法数量时不要漏数即可轻松得分。
【难度系数】
0.7
这是一篇科普类英语阅读理解题，全部为细节理解类题型，解题思路如下：先通读题干标记每道题的核心关键词，带着关键词返回原文对应段落定位内容，逐一比对选项和原文信息即可选出正确答案。第1题核心关键词是"make people uncomfortable"，直接回文章开头找对应表述；第2题核心关键词是"ways to deal with catkins"，逐段梳理文中提到的所有治理飞絮的方法，统计数量即可；第3题核心关键词是"disadvantage of using injections"，定位到介绍注射治理方法的段落，找到对应的缺点描述排除错误选项即可。
【解析】
1. 第1题：根据原文第一段"Catkins can cause allergies, making people's noses, eyes, and skin uncomfortable."，明确说明是杨柳的飞絮会让人们产生不适，A选项冬天的雪、B选项雄树的树枝、C选项特殊注射都不符合原文描述，因此选D。
2. 第2题：梳理全文提到的治理飞絮的方法：① 给杨柳树做"变性手术"，砍掉雌树枝条替换成雄树枝条；② 给树木注射特殊药剂减少飞絮；③ 在飞絮形成前给树木喷洒专用药物，一共3种方法，对应选项C。
3. 第3题：定位到原文介绍注射法的段落，末尾明确说明"However, the trees need to get injections every year to keep the catkin numbers under control."，也就是注射法的缺点是树木每年都需要注射才能维持效果。A选项花费高是"变性手术"的缺点，C选项需要大量熟练工人也是"变性手术"的特点，D选项是注射法的优点，均不符合题意，因此选B。
【答案】
1. D 2. C 3. B
【知识点】
英语细节阅读，说明文信息定位
【点评】
本题属于难度适中的科普类阅读，所有题目答案都可以直接从原文中找到对应依据，不需要额外推理，解题的核心是准确定位题干对应的原文区域，注意不要混淆不同治理方法的优缺点，统计方法数量时不要漏数即可轻松得分。
【难度系数】
0.7
