资源简介

U4 Period3(1a-1e)校本练习
（限时40分钟）
一、单项选择
1. The explorer almost fell down when ______ the narrow cave path last week.
A. climb B. to climb C. climbing D. climbed
2. The ______ of many coral reefs has made scientists worried, and we must stop this from getting worse.
A. died B. dead C. death D. die
3. Though the cave exploration task was ______, the team completed it ______ by working together.
A. hardly; successful B. hard; successfully C. hard; successful D. hardly; successfully
4. These signs help people ______ about cave safety, and people may risk ______ their lives if they ignore them.
A. learning; losing B. learn; lose C. learn; losing D. learning; lose
5. —The weather in the cave is so changeable, just like a roller coaster.
—Yes, it’s true. ______!
A. What a strange weather B. How a strange weather C. How changeable weather D. What changeable weather
二、完形填空
Last summer, I joined a cave exploration team for my first caving trip. It was a completely new experience that I would never forget.
We arrived at the cave entrance early in the morning. The cave looked dark and mysterious, and I felt a little 1. ______ at first. Our guide told us to follow his steps and not to touch the rocks casually, as some were very 2. ______.
We walked into the cave slowly. The path was 3. ______ and wet, and I had to be very careful not to slip. The guide showed us many amazing rock formations (岩层), like stalactites (钟乳石) and stalagmites (石笋). I was so 4. ______ that I took out my camera to take photos non-stop.
Halfway through the trip, we reached a large underground lake. The water was clear and quiet, and the 5. ______ of the lake was over 20 meters. We took a small boat to cross the lake, and the guide told us stories about the cave’s history.
Suddenly, my foot got stuck in a rock crack. I tried to 6. ______ my foot out, but it was too tight. The guide came to help me, and we finally got it out safely. I was a little scared, but I didn’t give up.
After 3 hours of walking, we 7. ______ the end of the cave. The view there was breathtaking, with beautiful rock lights and a small underground waterfall. I felt so proud of myself for finishing the trip.
This caving trip taught me that exploration needs 8. ______ and courage. It also made me love the wonders of nature more. We should 9. ______ these natural wonders and not damage them. I am already 10. ______ forward to my next caving trip!
1. A. excited B. nervous C. happy D. angry
2. A. soft B. fragile C. strong D. heavy
3. A. wide B. smooth C. narrow D. bright
4. A. curious B. bored C. tired D. afraid
5. A. height B. depth C. length D. width
6. A. push B. put C. pull D. carry
7. A. reached B. arrived C. got D. came
8. A. determination B. money C. luck D. time
9. A. pollute B. protect C. ignore D. leave
10. A. looking B. putting C. going D. getting
三、根据首字母或音标写出单词，使句子意思完整正确
1. The little rabbit s______ in the cold cave for two days before we found it.
2. The t______ in the deep cave is always below 10℃ all year round.
3. The cave is in good c______ after thousands of years, with no serious damage.
4. She carried a heavy exploration bag on her left s______ as she walked through the cave.
5. People in the n______ part of the country often explore ice caves in winter.
6. The workers used a tool to ______ / me (r)/ the length of the cave path.
7. He was ______ /d t m nd/ to finish the cave exploration even though it was hard.
8. The ______ / d st ns/ between the two caves makes the trip more challenging.
9. Her ______ / kj ri s/ about the cave made her ask the guide many questions.
10. The guide explained the rules in a ______ / s mpl/ way so everyone could understand.
四、用所给单词的适当形式填空
1. Her ______ (curious) about the cave made her ask the guide many questions.
2. The ______ (long) of the cave is about 500 meters, which takes 3 hours to walk through.
3. Although the exploration task was hard, she ______ (determine) to finish it successfully.
4. The guide explained the safety rules so ______ (simple) that everyone understood clearly.
5. The ______ (distant) between the cave entrance and the underground lake is 200 meters.
6. We need to take ______ (measure) to protect the cave from being damaged.
7. He ______ (pull) his foot out of the rock crack with the guide’s help yesterday.
8. It is important ______ (keep) safe during cave exploration.
五、用方框中所给单词的适当形式填空（有多余项）
curious distance pull determine simple measure
1. Her ______ about the cave’s history made her read many books about it.
2. The ______ of the cave path is 1.2 meters wide, so only one person can pass at a time.
3. Although the weather was bad, she ______ to finish the cave exploration.
4. The guide explained the problem so ______ that everyone could understand it.
5. The long ______ between the two villages makes the cave trip take more time.
六、根据汉语提示完成句子（每空一词）
1. 那位探险家成功穿越了洞穴。
The explorer succeeded ______ ______ through the cave.
2. 洞穴深处的温度在零度以下。
The temperature in the deep cave is ______ ______ ______.
3. 他一点一点地积累探洞经验，变得很专业。
He accumulated caving experience ______ ______ ______ and became very professional.
4. 这位年轻人充满决心，计划探索最深的洞穴。
The young man is ______ ______ ______ and plans to explore the deepest cave.
5. 昨天他用力把卡在石头里的工具拔了出来。
He ______ the tool ____ ____ the rock with force yesterday.
七、阅读理解
The Amazing Deep-Sea Coral Reefs
Deep-sea coral reefs are one of the most amazing natural wonders on Earth. They are home to thousands of kinds of marine life, from colorful fish to tiny shrimps. Unlike shallow-water corals, deep-sea corals grow in dark, cold waters, thousands of meters below the sea surface.
Scientists have been exploring deep-sea coral reefs for many years. They use special submarines (潜水器) to reach these deep areas. These explorations help us learn more about the ocean and the life in it. For example, scientists found that deep-sea corals can live for hundreds of years, and some even grow very slowly, only a few millimeters a year.
Deep-sea coral reefs are very important to the ocean ecosystem. They provide homes and food for many marine animals. They also help protect the coastlines from storms and waves. However, deep-sea coral reefs are in great danger now. Human activities like deep-sea fishing, oil drilling and plastic pollution are damaging these reefs. Many corals are dying, and the marine life that depends on them is also losing their homes.
To protect deep-sea coral reefs, governments and scientists are working together. They set up marine protected areas, limit deep-sea fishing, and clean up ocean plastic. They also teach people about the importance of these natural wonders. We all should do our part to save these amazing underwater forests.
1. What are deep-sea coral reefs
A. A kind of shallow-water plant.
B. A home to thousands of marine life.
C. A type of deep-sea fish.
D. A kind of submarine.
2. How do scientists explore deep-sea coral reefs
A. By swimming.
B. By using special submarines.
C. By taking boats.
D. By using drones.
3. Why are deep-sea coral reefs important
A. They provide homes for marine animals and protect coastlines.
B. They grow very fast and can be used as food.
C. They are easy to protect and need no care.
D. They can produce oil for human use.
4. What threatens deep-sea coral reefs
A. Too many marine animals.
B. Cold water in the deep sea.
C. Human activities like fishing and pollution.
D. Strong waves and storms.
5. What is the best title of the passage
A. The Deep Sea and Its Animals
B. How to Explore the Deep Sea
C. The Amazing Deep-Sea Coral Reefs and Their Protection
D. The History of Deep-Sea Exploration
参考答案
一、单项选择
1. C 2. C 3. B 4. C 5. D
二、完形填空
1. B 2. B 3. C 4. A 5. B
6. C 7. A 8. A 9. B 10. A
三、根据首字母或音标写出单词
1. survived 2. temperature 3. condition 4. shoulder 5. northern
6. measure 7. determined 8. distance 9. curious 10. simple
四、用所给单词的适当形式填空
1. curiosity 2. length 3. determined 4. simply 5. distance
6. measures 7. pulled 8. to keep
五、用方框中所给单词的适当形式填空
1. curiosity 2. measurement 3. determined 4. simply 5. distance
六、根据汉语提示完成句子
1. in going 2. below zero degrees 3. little by little
4. full of determination 5. pulled; out of
七、阅读理解
1. B 2. B 3. A 4. C 5. C

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