一、根据汉语意思或音标写单词。
1. Of all the boxes, this one is the (重的). No one can move it.
2. Peter is the (快的) runner in his class. No one can outrun (超过) him.
3. Blue (鲸) are the biggest living things in the world.
4. DeepSeek is one of the most /əˈmeɪzɪŋ/ inventions (发明). I think it will change our life.
5. It was sunny /ˈsevrəl/ minutes ago, but it's raining hard now!

1.heaviest
2.fastest
3.whales
4.amazing
5.several

1. 句中"Of all the boxes"表示在所有箱子这个三者及以上的范围里比较，需要用形容词最高级，“重的”对应的形容词heavy的最高级形式是heaviest。
2. 句中"in his class"表示在整个班级的范围里比较，属于多者之间的对比，需要用形容词最高级，修饰runner表示“快的”的形容词fast的最高级是fastest。
3. 句中be动词是are，说明主语要使用复数形式，“鲸”的英文是whale，复数形式为whales，blue whales是固定表达“蓝鲸”。
4. 根据给出的音标/ə'meɪzɪŋ/，可以拼写出对应单词amazing，意为“令人惊叹的”，符合"one of the + 形容词最高级+名词复数"的常用结构。
5. 根据给出的音标/'sevrəl/，可以拼写出对应单词several，意为“几个”，"several minutes ago"表示“几分钟前”，符合句子语境。

二、用括号中所给单词的适当形式填空。
6. In my mind, the West Lake is (beautiful) place in Hangzhou.
7. As we all know, China is one of (old) countries in the world.
8. I think Jack is (tall) boy in his class.
9. The Sahara is (large) desert（沙漠）in the world.
10. The Nile is more than 6,600 km . It's than the Yangtze River and it's river in the world. (long)

6. the most beautiful
7. the oldest
8. the tallest
9. the largest
10. long; longer; the longest

本题考查形容词比较级、最高级的相关用法，符合本单元形容词最高级的知识点要求：
1. 当句中有in/of...等表示三者及以上的比较范围时，需使用形容词最高级：多音节形容词的最高级构成为the most+形容词原级，单音节形容词最高级一般在词尾加-est，形容词最高级前通常要加定冠词the；
2. 固定结构one of + the + 形容词最高级 + 可数名词复数，意为“最……之一”；
3. 句中出现提示词than时，需使用形容词比较级，单音节形容词比较级一般在词尾加-er；
4. 表达事物具体长度时，常用“基数词+长度单位+long”的结构。

三、阅读理解。
①Almost all animals need to sleep to stay healthy. However, sleeping can be dangerous because other animals may hunt sleeping animals. To help themselves stay safe, animals have many different ways of sleeping. Some of these ways may surprise you!
②Some seabirds can sleep while they are flying. These large birds spend most of their lives over the ocean. They are in danger on the water, but they are safe in the air. They glide（滑行）for many hours without moving their wings up and down. Sometimes they sleep while they are gliding.
③A dolphin（海豚）sleeps with just half its brain at a time. It must stay awake to breathe and to watch for danger. Dolphins can swim without sleeping for about two months to stay safe.
④Seals（海豹）breathe air, but that doesn't stop them from sleeping underwater. They hold their breath and dive deep to sleep for up to twenty minutes at a time.
⑤Some fish make their own sleeping bags. They make a big bubble（气泡）and sleep inside it. It also keeps other animals from smelling them. If an animal hits the bubble, the fish swims away quickly.
（）11. How do seabirds sleep?
A. By gliding. B. By resting in the sea.
C. By swimming up and down. D. By staying in the bubbles.
（）12. What will happen if an animal hits the bubbles of fish?
A. The fish will run away. B. The fish will stay outside.
C. The fish will make sleeping bags. D. The fish will smell other animals.
（）13. Which of the following can be the RIGHT structure of the passage?

（）14. Which of the following is the best title for the passage?
A. Sleep as Animals Do B. Sleep to Stay Fit
C. How Some Animals Sleep D. What Sleeping Animals Are Like

11. A 12. A 13. C 14. C

11. 细节理解题：定位到文章第②段最后一句"Sometimes they sleep while they are gliding."，可知海鸟是在滑行的过程中睡觉，对应选项A。
12. 细节理解题：定位到文章第⑤段最后一句"If an animal hits the bubble, the fish swims away quickly."，"swim away quickly"和选项A里的"run away"表意一致，对应选项A。
13. 文章结构题：第①段是总起段，点明主题——动物为了保证安全有很多令人惊讶的特殊睡眠方式；第②-⑤段分别介绍海鸟、海豚、海豹、鱼这四种动物的独特睡眠方式，属于总分结构，对应选项C的结构。
14. 主旨大意题：全文围绕不同动物的特殊睡眠方式展开，介绍几种动物各自的睡眠方法，选项C"How Some Animals Sleep"最符合全文主旨。