二、阅读与回答问题
Weather is important as it influences many things in people's lives. Temperatures, wind, rain and snow are all parts of weather.
Weather is the condition of the atmosphere (大气) at a particular (专指的) place and time. The atmosphere is mostly made of air and wind is air which moves quickly. Heat from the sun makes the air move around. Hot air rises, leaving a space behind. Cooler air goes into that space. So air is always moving around the earth. The moving air pushes clouds along with it, making them travel across the sky.
Rain can fall from clouds when the air temperature is above 0°C. The water vapour (水蒸气) in clouds cools and becomes raindrops. The raindrops get bigger and heavier until they fall from the cloud. If the temperature is below freezing, tiny ice crystals (结晶) start to form in clouds. When the ice crystals fall from the cloud, they stick together to make beautiful snowflakes (雪花). Rain and snow are both important for life on earth. They bring water back into lakes, rivers and seas.
1. What is weather?
It's the condition of the atmosphere at a particular place and time.
2. What is the atmosphere made of?
It is mostly made of air.
3. What can fall from clouds when the temperature is above 0°C?
Rain.
4. How do snowflakes form?
The ice crystals fall from the cloud and stick together.
5. Why are rain and snow important for life on earth?
Because they bring water back into lakes, rivers and seas.
解析：
【分析】本题为英语阅读理解的细节回答题，解题思路是先通读全文，针对每个问题定位原文对应段落的关键语句，提取精准信息，整理成符合问题要求的简洁答案，确保答案与原文表述一致。
【解析】1. 定位原文第二段第一句，直接提取天气的定义；2. 定位原文第二段关于大气构成的语句，提取关键内容；3. 定位原文第三段关于0℃以上从云层落下的物质的语句，提取答案；4. 定位原文第三段关于雪花形成过程的语句，整理成答案；5. 定位原文第三段最后一句关于雨雪重要性的原因，提取答案。
【答案】1. It's the condition of the atmosphere at a particular place and time.
2. It is mostly made of air.
3. Rain.
4. The ice crystals fall from the cloud and stick together.
5. Because they bring water back into lakes, rivers and seas.
【知识点】英语阅读理解、细节信息提取
【点评】本题考查英语阅读中定位原文关键信息的能力，属于基础题型，所有答案均可从原文直接找到，只要认真阅读原文即可轻松答对，适合巩固英语阅读基础。
【难度系数】0.8
