() 10. — Wetlands are like the “kidneys” of the earth because they clean water and prevent floods.
— That’s why they’re so important.

A.I don’t think so.
B.I couldn’t agree more.
C.I’m afraid not.
D.It’s a pity.

10. B

【分析】本题为情景交际题，解题思路：先理解对话语境，第一句阐述湿地的重要作用，第二句后半句“That’s why they’re so important”表明是对前者观点的赞同，需选择表赞同的交际用语；再逐一分析选项含义，排除不符合语境的选项，得出答案。
【解析】首先分析对话逻辑：前者指出湿地像地球的“肾脏”，能净化水、防洪，第二句的后半句说明是赞同前者关于湿地重要性的表述。逐一分析选项：A选项“I don’t think so”表否定，不符合；B选项“I couldn’t agree more”意为“我完全同意”，表赞同，符合语境；C选项“I’m afraid not”表否定，不符合；D选项“It’s a pity”意为“真遗憾”，与语境无关。因此选B。
【答案】B
【知识点】情景交际；日常交际用语
【点评】本题考查日常情景交际用语，需结合对话语境判断说话人的态度，属于基础题型，难度较低。
【难度系数】0.8

四、阅读理解 阅读下面的短文，然后根据短文内容，在每小题所给的四个选项中选出最佳选项。
The Important Three: Mangroves, Tundras and Coral Reefs
What’s an Ecosystem?
An ecosystem is all the living things (like plants, animals) and non-living things (such as water, rocks) in one area. Ecosystems can be big or small — from a small garden pond to a large icy tundra. Each ecosystem has a job, helping to keep a balance between its parts and the world.
1. Mangroves: Coast Protectors
Mangroves grow in coastal (海岸的) areas, mostly in warm places. They cover only a little of the world’s coasts. But these strong trees are great for coasts! Their twisted roots are like a net. They stop the shore from being washed away in storms. Also, mangrove forests are home to many sea animals. Baby fish hide in the roots, and birds make nests in the branches. So, mangroves are like the “guards” of the coast, protecting land and sea life.
2. Tundras: Cold Lands
Tundras are cold, treeless areas in the Arctic and on high mountains. They cover about 10% of Earth’s land. The ground there is often frozen — we call this permafrost. Even though it’s hard to live there, tundras have special life. Small plants like mosses grow close to the ground to stay away from cold winds. Some animals, like Arctic hares, have thick fur to survive. Tundras store a lot of carbon in their frozen soil. This makes them important for the planet’s climate, like Earth’s “cold storage”.
3. Coral Reefs: Ocean Homes
Coral reefs are underwater ecosystems. They form in warm, shallow (浅的) ocean waters and cover less than 1% of the ocean floor. But they’re like busy cities under the sea! Thousands of colorful fish, sea turtles, and other creatures live here. Coral is made by tiny animals called polyps. These polyps build hard skeletons. Coral reefs also protect coasts from big waves. They’re the “ocean homes” that support countless lives and shield shorelines.
() 1. Which ecosystem helps baby fish hide and protects coasts in storms?
A. Mangroves. B. Tundras. C. Coral Reefs. D. Beaches.
() 2. Why are tundras called Earth’s “cold storage”?
A. Because they are very cold with ice.
B. Because they are in the coldest places.
C. Because they have special cold-loving plants.
D. Because they store much carbon.
() 3. Where can we read the passage?
A. In a storybook about magical living things.
B. In a travel guide introducing famous places.
C. In a science magazine about nature and ecosystems.
D. In a history book about environmental changes.

1. A 2. D 3. C

【分析】
这是三道英语阅读理解题，第1、2题为细节理解题，第3题为文章出处判断题。解题思路：1. 第1题需定位原文中同时提到“帮助幼鱼躲藏、保护海岸”的生态系统，回到对应段落匹配信息；2. 第2题定位原文中苔原被称为地球“冷存储”的原因，对应选项内容；3. 第3题根据文章介绍生态系统的核心内容，判断其所属的文本类型，结合选项排除不符项。
【解析】
1. 第1题：根据原文Mangroves段落“Baby fish hide in the roots... They stop the shore from being washed away in storms.”，可知红树林既可为幼鱼提供躲藏处，又能在风暴中保护海岸，对应选项A。
2. 第2题：根据原文Tundras段落“Tundras store a lot of carbon in their frozen soil. This makes them important for the planet’s climate, like Earth’s “cold storage”.”，可知苔原被称为“冷存储”是因为储存大量碳，对应选项D。
3. 第3题：文章核心内容是介绍三种生态系统的功能，属于自然生态类科学内容，应出自关于自然与生态的科学杂志，对应选项C。
【答案】
1.A 2.D 3.C
【知识点】
英语阅读理解、细节信息定位、文章出处判断
【点评】
本题考查学生英语阅读理解的细节查找能力与文本体裁判断能力，题目难度较低，只要能准确定位原文对应内容即可选出答案，属于基础阅读理解题型。
【难度系数】
0.8