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① Is the sky bluer in autumn than in summer? The answer is yes! There are real reasons for this.
② The sun is lower in the sky in autumn. As the days get shorter, the sun appears lower and lower in the sky. It doesn't shine directly on our horizon. Instead, it is closer to the earth and more blue light is scattered(散射). This makes the sky seem bluer.
③ In autumn, there is less water in the air, so there are fewer clouds. Autumn is known for good weather—cooler temperatures and less wet air. The air does not hold much water, so clouds do not form easily. When there are few or no clouds covering the sky, the blue colour of the sky shows more clearly, and the sky looks more open and brighter.
④ You might be surprised, but the colourful leaves of autumn actually help give the sky's blueness a colour boost(增强), which can make the sky seem even bluer. If you've made a colour wheel for an art class, you know that blue and orange are opposite colours that look good together. The red, orange, and gold leaves of autumn make the blue sky stand out beautifully against them. This contrast looks nice and creates a special autumn view.
⑤ So, the next time you're out enjoying the beautiful weather in autumn, take a moment to look up at the sky. Remember these reasons why it looks so blue and enjoy the view!
任务一 回答问题(每题答案不超过8个词)
1. Why is the sky bluer in autumn? Give one reason.
2. How do colourful leaves help the sky?
3. What is autumn famous for?
4. What is the passage mainly about?
5. Do you know other scientific phenomena that happen during the changes of seasons? Give one example.
任务二 阅读理解
1. (创新考法·图片理解)Which one shows the relationship between the water in the air (x) and the blue colour of the sky (y)?
2. (创新考法·篇章结构)What is the structure of the passage?
② The sun is lower in the sky in autumn. As the days get shorter, the sun appears lower and lower in the sky. It doesn't shine directly on our horizon. Instead, it is closer to the earth and more blue light is scattered(散射). This makes the sky seem bluer.
③ In autumn, there is less water in the air, so there are fewer clouds. Autumn is known for good weather—cooler temperatures and less wet air. The air does not hold much water, so clouds do not form easily. When there are few or no clouds covering the sky, the blue colour of the sky shows more clearly, and the sky looks more open and brighter.
④ You might be surprised, but the colourful leaves of autumn actually help give the sky's blueness a colour boost(增强), which can make the sky seem even bluer. If you've made a colour wheel for an art class, you know that blue and orange are opposite colours that look good together. The red, orange, and gold leaves of autumn make the blue sky stand out beautifully against them. This contrast looks nice and creates a special autumn view.
⑤ So, the next time you're out enjoying the beautiful weather in autumn, take a moment to look up at the sky. Remember these reasons why it looks so blue and enjoy the view!
任务一 回答问题(每题答案不超过8个词)
1. Why is the sky bluer in autumn? Give one reason.
Because the sun is lower. /Because there are fewer clouds. /Because of the colourful leaves.
2. How do colourful leaves help the sky?
They make the sky stand out.
3. What is autumn famous for?
Good cool dry weather.
4. What is the passage mainly about?
Why the autumn sky is bluer.
5. Do you know other scientific phenomena that happen during the changes of seasons? Give one example.
Yes. Frost forming in autumn.（言之有理即可）
任务二 阅读理解
1. (创新考法·图片理解)Which one shows the relationship between the water in the air (x) and the blue colour of the sky (y)?
2. (创新考法·篇章结构)What is the structure of the passage?
答案
任务一
1. Because the sun is lower. /Because there are fewer clouds. /Because of the colourful leaves.
2. They make the sky stand out.
3. Good cool dry weather.
4. Why the autumn sky is bluer.
5. Yes. Frost forming in autumn.（言之有理即可）
任务二
1. B 图片理解题。根据“The air does not hold much water, so clouds do not form easily. When there are few or no clouds covering the sky, the blue colour of the sky shows more clearly, and the sky looks more open and brighter.”可知，空气中没有多少水分，所以云不容易形成。当很少或没有云覆盖天空时，天空的蓝色更明显，天空看起来更开阔、更明亮。由此可知，空气中的水分越少，天空的蓝色越明显，即空气中的水分越多，天空的蓝色越不明显。
2. A 篇章结构题。通读全文可知，第一段提出了问题并给出了直接的答案；第二、三、四段分别解释了三个原因；第五段鼓励读者在秋天欣赏美丽的天空，并记住这些原因。
1. Because the sun is lower. /Because there are fewer clouds. /Because of the colourful leaves.
2. They make the sky stand out.
3. Good cool dry weather.
4. Why the autumn sky is bluer.
5. Yes. Frost forming in autumn.（言之有理即可）
任务二
1. B 图片理解题。根据“The air does not hold much water, so clouds do not form easily. When there are few or no clouds covering the sky, the blue colour of the sky shows more clearly, and the sky looks more open and brighter.”可知，空气中没有多少水分，所以云不容易形成。当很少或没有云覆盖天空时，天空的蓝色更明显，天空看起来更开阔、更明亮。由此可知，空气中的水分越少，天空的蓝色越明显，即空气中的水分越多，天空的蓝色越不明显。
2. A 篇章结构题。通读全文可知，第一段提出了问题并给出了直接的答案；第二、三、四段分别解释了三个原因；第五段鼓励读者在秋天欣赏美丽的天空，并记住这些原因。
解析
【分析】
本题为英语阅读理解题，分为任务一（细节查找类）和任务二（图片理解、篇章结构类）。解题思路：任务一需从原文对应段落定位问题关键词，提取不超过8词的答案；任务二的图片理解题需根据原文关于空气中水分与天空蓝色的逻辑关系判断，篇章结构题需梳理全文段落间的逻辑层次。
【解析】
任务一：
1. 定位原文第②段（太阳更低）、第③段（云更少）、第④段（彩叶），任选其一，答案不超8词。
2. 定位原文第④段末句，提取彩叶的作用。
3. 定位原文第③段“Autumn is known for good weather—cooler temperatures and less wet air”，提取核心。
4. 通读全文，核心是解释秋天天空更蓝的原因。
5. 结合季节变化的科学现象，举例合理即可。
任务二：
1. 原文第③段逻辑：空气中水分越少→云越少→天空蓝色越明显，即水分（x）与天空蓝色（y）呈负相关，对应选项B。
2. 段落结构：第①段总起（提出问题+答案），第②-④段分述原因，第⑤段总结鼓励，为总分总结构，对应选项A。
【答案】
任务一
1. Because the sun is lower. /Because there are fewer clouds. /Because of the colourful leaves.
2. They make the sky stand out.
3. Good cool dry weather.
4. Why the autumn sky is bluer.
5. Yes. Frost forming in autumn.（言之有理即可）
任务二
1. B
2. A
【知识点】
英语阅读理解、细节理解、篇章结构
【点评】
本题结合科普内容考查英语阅读理解能力，涵盖细节查找、主旨归纳、逻辑推理及篇章结构分析，既巩固语言知识又渗透科学常识，题型常规贴合课标要求。
【难度系数】
0.6
本题为英语阅读理解题，分为任务一（细节查找类）和任务二（图片理解、篇章结构类）。解题思路：任务一需从原文对应段落定位问题关键词，提取不超过8词的答案；任务二的图片理解题需根据原文关于空气中水分与天空蓝色的逻辑关系判断，篇章结构题需梳理全文段落间的逻辑层次。
【解析】
任务一：
1. 定位原文第②段（太阳更低）、第③段（云更少）、第④段（彩叶），任选其一，答案不超8词。
2. 定位原文第④段末句，提取彩叶的作用。
3. 定位原文第③段“Autumn is known for good weather—cooler temperatures and less wet air”，提取核心。
4. 通读全文，核心是解释秋天天空更蓝的原因。
5. 结合季节变化的科学现象，举例合理即可。
任务二：
1. 原文第③段逻辑：空气中水分越少→云越少→天空蓝色越明显，即水分（x）与天空蓝色（y）呈负相关，对应选项B。
2. 段落结构：第①段总起（提出问题+答案），第②-④段分述原因，第⑤段总结鼓励，为总分总结构，对应选项A。
【答案】
任务一
1. Because the sun is lower. /Because there are fewer clouds. /Because of the colourful leaves.
2. They make the sky stand out.
3. Good cool dry weather.
4. Why the autumn sky is bluer.
5. Yes. Frost forming in autumn.（言之有理即可）
任务二
1. B
2. A
【知识点】
英语阅读理解、细节理解、篇章结构
【点评】
本题结合科普内容考查英语阅读理解能力，涵盖细节查找、主旨归纳、逻辑推理及篇章结构分析，既巩固语言知识又渗透科学常识，题型常规贴合课标要求。
【难度系数】
0.6
