1选择题
— ________ the volunteers from the local community helping with the river cleanup? — Yes, they ________. They are making a real difference to the environment.
- A. Is; is
- B. Are; are
- C. Is; are
- D. Are; is
答案：B
解析：本题考查人称代词与be动词的搭配。问句主语是复数形式“the volunteers”，因此be动词用“Are”。答句主语是代词“They”，代指复数志愿者，也应用“are”。易错点在于忽略主语的单复数，或受中文思维影响将“志愿者”误认为单数。故选B。
2选择题
________ (Protect) endangered species in the wild requires cooperation from governments and the public.
- A. Protect
- B. Protecting
- C. Protected
- D. To protect
答案：B
解析：本题考查动名词作主语的用法。句子缺少主语，动词原形不能直接作主语，需使用动名词形式Protecting，表示“保护”这一行为。动词不定式也可作主语，但通常表示具体的、一次性的动作，而动名词多表示一般性、习惯性的活动，此处语境更符合后者。易错点是误选A（动词原形）或D（不定式），或对非谓语动词作主语的功能理解不清。故选B。
3选择题
The Amazon rainforest is famous ________ its biodiversity, which is vital ________ the global ecosystem.
- A. as; for
- B. for; to
- C. to; for
- D. for; as
答案：B
解析：本题考查介词短语的固定搭配。第一个空考查be famous for，意为“因……而出名”，指雨林因生物多样性闻名。第二个空考查be vital to，意为“对……至关重要”。易错点是混淆be famous for（因……出名）和be famous as（作为……出名），以及对形容词与介词的固定搭配记忆不牢。故选B。
4选择题
— ________ you ever ________ (see) such a clear night sky full of stars in the countryside? — Yes, I ________ (see) one during a camping trip last summer.
- A. Did; saw; saw
- B. Have; seen; saw
- C. Have; seen; have seen
- D. Did; see; have seen
答案：B
解析：本题考查现在完成时与一般过去时的区分。问句中有标志词ever，常与现在完成时连用，结构为Have+主语+过去分词。答句中有明确的过去时间状语last summer，表示过去某一具体时间发生的动作，应用一般过去时saw。易错点是受中文影响将ever误用于一般过去时，或将last summer误认为完成时标志。故选B。
5填空题
To reduce plastic pollution, we ________ (should) use reusable bags when shopping. (用情态动词should完成句子)
答案：should use
解析：本题考查情态动词should表建议的用法。情态动词should后必须接动词原形，表示建议或责任。主语we不影响动词原形形式。易错点是should后误加s（如shoulds），或与must（必须）的语气强弱混淆。
6填空题
________ (see) from space, the Great Barrier Reef appears as a stunning blue ribbon in the ocean. (用所给动词的适当形式填空)
答案：Seen
解析：本题考查非谓语动词作状语。句子的主语是the Great Barrier Reef，与动词see之间是被动关系（珊瑚礁被看），且该动作与主句谓语appears同时发生，因此用过去分词Seen表被动和完成。易错点是误用现在分词Seeing（表主动），或忽略分词的逻辑主语必须与句子主语一致。
7解答题
将下列两个句子合并为一个含有非限制性定语从句的复合句。
主句：China has made great progress in renewable energy.
从句：This is known to all.
答案：China has made great progress in renewable energy, which is known to all. 或 China has made great progress in renewable energy, as is known to all.
解析：本题考查非限制性定语从句的用法。先行词是前面整个主句“China has made great progress in renewable energy”，在从句中作主语，因此用关系代词which或as。as引导非限制性定语从句时，有“正如”的含义，常与know, see等动词连用，位置灵活；which仅指代事实。易错点是误用that引导非限制性从句，或忽略逗号的使用。
8解答题
假设你是李华，你的英国笔友Tom对中国的环境保护措施很感兴趣。请给他写一封邮件，内容包括：
1. 介绍一项你了解的中国环保措施（如垃圾分类、植树造林、使用清洁能源等）；
2. 说明这项措施如何有助于保护环境；
3. 表达你个人的看法或感受。
注意：
1. 词数100左右；
2. 可以适当增加细节，以使行文连贯；
3. 开头和结尾已给出，不计入总词数。
答案：Dear Tom,
I'm glad to hear that you are interested in China's environmental protection measures. One significant initiative is the promotion of garbage sorting in major cities.
This policy requires residents to separate their waste into categories such as recyclables, kitchen waste, hazardous waste, and other waste before disposal. By doing so, it greatly increases the rate of resource recycling and reduces the amount of waste sent to landfills or incinerators, which in turn minimizes soil and air pollution. Furthermore, it raises public awareness about sustainable living.
Personally, I believe this measure is both practical and necessary. Although it may take some time for everyone to adapt, it is a crucial step towards building a greener and cleaner future. I hope more cities around the world will adopt similar practices.
Yours,
Li Hua
解析：本题考查综合语言运用能力，特别是书面表达。题目要求围绕环境保护情境，介绍一项具体措施并阐述其作用和个人看法。学生需注意邮件格式，内容应涵盖题目要求的三个方面，逻辑清晰，语言准确。易错点包括：1. 内容要点遗漏；2. 时态、语态错误；3. 连接词使用不当导致行文不连贯；4. 词汇或句型过于简单。解析中提供的范文结构完整，使用了恰当的连接词（如Furthermore, Personally）和复合句，符合高一上册关于非谓语（如to separate）、定语从句（which...）等知识点的综合运用要求。