A（改编自Reading短文）
The ocean, wetlands, and forests are the earth's three most important ecosystems. Each one plays a unique（独一无二的） role in
1. k our planet healthy.
The ocean covers about 71% of the earth's surface and 2. p about 70% of our oxygen. It holds much salt water and drives the water cycle, as seawater 3. r to the sky, falls as rain onto the land, and then returns to the sea. It acts 4. l the "heart" of the earth.
Wetlands are 5. h to about 40% of the world's plants and animals. They act like the "kidneys" of the earth, 6. g rid of pollution and making the water clean. During heavy rains, wetlands can 7. s water to prevent floods.
Forests are the "lungs" of the earth and make up 8. n a third of the land. Their trees take in carbon dioxide and produce oxygen while their leaves trap 9. h things to clean the air.
Together, these ecosystems support 10. m of species（物种） and keep our planet balanced.
B（改编自...

1. keeping 2. produces 3. rises 4. like 5. home
6. getting 7. store 8. nearly 9. harmful 10. millions

【分析】
本题是根据短文语境及首字母提示完成单词填空，解题思路为：1. 通读全文把握主旨（介绍地球三大生态系统的作用）；2. 结合空格前后语法结构（如介词后接动名词、情态动词后接动词原形、第三人称单数谓语变化等）；3. 联系固定搭配（如be home to、act like等）；4. 结合上下文语义逻辑，确定符合首字母的单词及正确形式。
【解析】
1. 空格前为介词in，需接动名词，结合固定搭配keep healthy（保持健康），故填keeping；
2. 主语the ocean是第三人称单数，谓语动词用三单形式，语义为“产生氧气”，故填produces；
3. 主语seawater是第三人称单数，谓语用三单形式，语义为“海水上升到空中”，故填rises；
4. 固定搭配act like（像），符合“像地球的心脏”的语义，故填like；
5. 固定搭配be home to（是……的栖息地），符合“湿地是动植物栖息地”的语义，故填home；
6. 此处为现在分词作伴随状语，与making并列，固定搭配get rid of（去除），故填getting；
7. 情态动词can后接动词原形，语义为“储存水”，故填store；
8. 语义为“几乎三分之一的陆地”，nearly符合语境，故填nearly；
9. 修饰名词things需用形容词，语义为“有害的东西”，故填harmful；
10. 固定搭配millions of（数百万），故填millions。
【答案】
1. keeping 2. produces 3. rises 4. like 5. home 6. getting 7. store 8. nearly 9. harmful 10. millions
【知识点】
动词形式变化、固定搭配、形容词用法
【点评】
本题为短文首字母填空题，考查词汇、固定搭配及语法的综合运用，需结合上下文和语法规则确定单词形式，难度适中。
【难度系数】
0.6

B（改编自Integration A短文）
Zhalong Nature Reserve, one of the
1. w most important wetland areas,
lies in Heilongjiang Province in 2. n
China. It provides plenty of wildlife with food
and 3. c, including rare birds like the
red-crowned cranes.
Many bird species live in Zhalong all year
round 4. w others visit there only for
a short stay. Most birds are active during the
day, making it 5. e for visitors to
watch them. 6. H, the reserve faces
dangers. Some people want to make the wetlands
7. s to create space for farms and
buildings, which would 8. l to fewer
living areas for wildlife. Local fishermen keep
9. f and make the birds have no
enough food to eat.
To protect this precious ecosystem, the
Chinese 10. g has made laws to stop
these harmful activities.

1. world's 2. north-east 3. cover 4. while 5. easy
6. However 7. smaller 8. lead 9. fishing
10. government

【分析】
本题为短文语境填空题，解题思路为：1. 通读全文，明确主题是介绍扎龙自然保护区的相关情况；2. 结合空格前后的语境、词性要求、固定搭配及逻辑关系，逐一推断每个空格应填的词汇；3. 核对答案，确保符合短文语义和语法规则。
【解析】
1. 此处修饰最高级most important，需用名词所有格表示“世界上的”，故填world's；
2. 黑龙江省位于中国东北，方位词north-east符合语境；
3. 与food并列，cover在此处意为“栖息地”，符合保护区为野生动物提供食物和栖息地的语境；
4. 前后句对比两种鸟类的生存情况，用连词while表示“而”；
5. 鸟类白天活动，因此游客容易观看，填形容词easy；
6. 前文介绍保护区的益处，后文转折说明面临危险，用转折副词However；
7. 为开辟农场和建筑空间，湿地会变得更小，填形容词比较级smaller；
8. 固定短语lead to意为“导致”，符合湿地变小导致野生动物栖息地减少的逻辑；
9. 渔民持续捕鱼，keep后接动名词fishing；
10. 中国政府制定法律保护生态，填名词government。
【答案】
1. world's 2. north-east 3. cover 4. while 5. easy 6. However 7. smaller 8. lead 9. fishing 10. government
【知识点】
语境填词、固定搭配、连词用法
【点评】
本题围绕扎龙自然保护区展开，考查学生对英语词汇在语境中的运用能力，涉及词性、固定搭配、逻辑关系等基础知识点，需结合上下文语义解题。
【难度系数】
0.5

C（改编自Integration D2短文）
Our oceans are home to 1. c kinds of sea life and provide us with food and a place to 2. e nature. Today, however, our oceans are facing serious 3. p, with pollution being one of the biggest ones. Millions of tons of 4. p waste end up in the ocean each year, and wastewater from homes and factories also flows into the sea, harming or 5. k sea life.
We can all take action to 6. r this damage. We can keep our beaches clean, choose eco-friendly 7. p, and tell people how to protect the ocean. You can also join an 8. e group and work as a volunteer to organize beach clean-ups and make more people improve the 9. k of protecting the oceans.
Our small efforts can make a big 10. d. Let us stand together to guard the ocean and all the life it supports.

1. countless 2. enjoy 3. problems 4. plastic
5. killing 6. reduce 7. products 8. environmental
9. knowledge 10. difference

【分析】做短文填空需先通读全文把握主题，再结合上下文语境、词性要求、固定搭配推断每个空的单词，注意单词的形式变化（如动名词等）。本题主题为海洋保护，逐空分析时，先确定每个空所需的词义和词性，再匹配符合要求的词汇。
【解析】1. 修饰名词kinds，结合语境“海洋有无数种海洋生物”，故填countless；2. 固定搭配enjoy nature（享受自然），故填enjoy；3. 后文提到污染是最大的问题之一，故填problems；4. 塑料垃圾为plastic waste，故填plastic；5. 与前面的harming并列，需用动名词形式，结合语境“伤害或杀死海洋生物”，故填killing；6. 结合语境“采取行动减少伤害”，故填reduce；7. 环保产品为eco-friendly products，故填products；8. 环保组织为environmental group，故填environmental；9. 结合语境“提高保护海洋的知识”，故填knowledge；10. 固定搭配make a difference（有影响），故填difference。
【答案】1. countless 2. enjoy 3. problems 4. plastic 5. killing 6. reduce 7. products 8. environmental 9. knowledge 10. difference
【知识点】英语词汇运用、短文填空、固定搭配
【点评】本题以海洋保护为主题，考察学生的词汇掌握及语境理解能力，需结合上下文推断词义和词性，难度适中。
【难度系数】0.5