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Unit 5 Looking into nature 单元练习
一、单项选择（10 分，每题 1 分）
（ ）1. Scientists have found that dinosaurs feathers, thanks to a piece of amber.
A. have B. had C. will have D. are having
（ ）2. —Do you know amber can help us discover
—It can tell us whether some species have changed over time.
A. what B. if C. whether D. that
（ ）3. People used to believe that ants from the northern half of the earth.
A. come B. came C. will come D. are coming
（ ）4. —I wonder Wang Wencai spent in wild mountains and forests.
—Over 70 years. He devoted his life to studying plants.
A. how long B. how far C. how many D. how much
（ ）5. Amber as a window on the past. It helps us unlock nature’s secrets.
A. is regarded B. regards C. regarded D. will be regarded
（ ）6. The discovery of the new ant species old beliefs about the history of ants.
A. changed B. changes C. will change D. is changing
（ ）7. —Could you tell me the boiling river in the Amazon Rainforest is hot
—Because of special natural conditions.
A. what B. why C. how D. whether
（ ）8. Wang Wencai didn’t stop his research he lost sight in his right eye.
A. because B. although C. so D. if
（ ）9. More than 300 unknown species by scientists through amber so far.
A. have discovered B. discovered C. have been discovered D. will be discovered
（ ）10. —I’m not sure we should put more effort into amber research.
—Of course we should. It can tell us more about nature.
A. that B. if C. what D. who
二、按要求完成句子（10 分，每题 2 个空，每个空 1 分）
People believed that dinosaurs looked like huge lizards.（改为否定句）
People that dinosaurs looked like huge lizards.
Amber can tell us whether dinosaurs had feathers.（对划线部分提问）
amber tell us
Wang Wencai discovered about 1,370 new plant species.（改为被动语态） About 1,370 new plant species by Wang Wencai.
“I will devote my life to nature exploration,” the scientist said.（改为宾语从句） The scientist said devote his life to nature exploration.
We should put more effort into research. We can unlock more secrets of nature.（合并为一句） We should put more effort into research we can unlock more secrets of nature.
三、语法填空，阅读短文，从方框中选择适当的词并用正确形式填空（10分，每空 1 分）
（prove, discover, believe, change, unlock, regard, spend, devote, carry, pass） Nature is full of secrets waiting to be . Amber is one of the keys to these secrets. For hundreds of years, people that dinosaurs were like huge lizards. But a piece of amber that they had feathers. This discovery people’s old beliefs.Wang Wencai, a great nature explorer, his whole life to studying plants. He
over 70 years in wild mountains and forests. Even when he lost sight in one eye, he on with his research. His work that love for nature can drive people to achieve great things. Today, amber is still as a window on the past, and nature exploration is still going on.
四、补全对话（10 分，每个空 2 分）
A: Hi, Lucy! I just read an article about amber. 1. B: Yes! I know amber can keep pieces of the past.
A: You’re right. Scientists found a dinosaur’s tail with feathers in amber. 2.
B: Really That’s amazing! I used to think dinosaurs had no feathers. A: Me too. 3.
B: I wonder if amber can tell us more about ancient species. A: 4. It may help us discover more unknown species.
B: What other secrets do you think nature has A: I’m not sure. 5.
B: I agree. We should put more effort into exploring nature.
But now we know we were wrong.
Have you heard about its secrets
Do you believe it
But I think there are still many unsolved mysteries.
Of course it can.
五、阅读理解（每题 2 分，共 20 分）
（A）
Secrets Caught in TimeFor centuries, people thought dinosaurs looked like huge lizards. But thanks to a piece of amber from Southeast Asia, scientists now know this is wrong. They found a dinosaur’s tail with feathers in the amber.Amber is like a window on the past. It can tell us whether dinosaurs had feathers and prove that life on earth has always changed. For example, a piece of amber from Northern Europe holds a flower. This
species no longer grows there, but the find shows it did 35 million years ago.So far, more than 300 unknown species have been discovered through amber. In African amber, scientists found 13 ants of a new species. This changed old beliefs that ants came from the northern half of the earth.Amber is still not fully understood. We should do more research on it. It is a key to unlocking more of nature’s secrets.
根据短文内容，选择最佳答案。
（ ）1. What did people use to think about dinosaurs
A. They had feathers. B. They looked like huge lizards.
C. They lived in amber. D. They were small animals.
（ ）2. What can amber tell us
A. Whether dinosaurs had feathers. B. How dinosaurs died out.
C. Where dinosaurs lived. D. When dinosaurs appeared.
（ ）3. What does the flower in Northern European amber prove
A. Flowers grew 35 million years ago.B. The species still grows in Northern Europe.
C. Life on earth has changed.D. Amber is from Northern Europe.
（ ）4. How many unknown species have been discovered through amber so far
A. 13. B. 35. C. 300. D. More than 300.
（ ）5. What is the main idea of the passage
A. Dinosaurs had feathers.B. Amber helps us discover nature’s secrets.
C. Ants came from Africa.D. How amber is formed.
（B）
Plants for LifeWang Wencai was a great Chinese plant explorer. He was born in early summer and made plants his lifelong passion. For over 70 years, he travelled across China to study the country’s plants.Wang discovered and named about 1,370 new plant species. To carry out his research, he spent years in wild mountains and forests. Once, he fell seriously ill during field work in Yunnan, but he never stopped working. At 83, he lost sight in his right eye, but he didn’t tell anyone. With a magnifier in hand, he continued his research for another 10 years.Despite his great achievements, Wang cared little about personal honour or wealth. He received the First Class Award of National Natural Science Awards twice, but he hardly mentioned it. He said the award belonged to his team. For a long time, even his granddaughter didn’t know about his achievements.Wang passed away at 96. When people said goodbye to him, they listened to Beethoven’s Pastoral Symphony, his favourite music. It softly told the story of his love for nature and lifelong exploration.根据短文内容，选择最佳答案。
（ ）1. How long did Wang Wencai study plants
A. For 10 years. B. For 70 years. C. For 83 years. D. For 96 years.
（ ）2. What happened to Wang Wencai during field work in Yunnan
A. He lost his magnifier. B. He fell seriously ill.
C. He lost sight in both eyes. D. He found a new plant species.
（ ）3. How did Wang Wencai continue his research after losing sight in one eye
A. With the help of his granddaughter.B. By working with his team.
C. With a magnifier in hand.D. By staying at home.
（ ）4. What did Wang Wencai think of the National Natural Science Award
A. It belonged to him alone. B. It belonged to his team.
C. It was not important. D. It was too difficult to get.
（ ）5. What can we learn from Wang Wencai
A. The love for nature drives exploration.B. Personal honour is the most important.
C. It’s easy to discover new species.D. We should give up when facing difficulties.
六、词汇运用（每题 1 分，共 10 分）
Amber can (unlock) the secrets of nature and show us the past.
Scientists (discover) more than 300 unknown species through amber so far.
People used to (believe) that ants came from the northern half of the earth.
Wang Wencai (devote) his whole life to studying plants.
The discovery of the new species (change) people’s old beliefs.
Amber is (regard) as a window on the past by scientists.
We should put more (effort) into nature exploration.
The flower in the amber (prove) that the species existed 35 million years ago.
Wang Wencai (carry) on with his research even after losing sight in one eye.
Nature has many (unsolved) secrets waiting for us to explore.
七、句型转换（每题 2 分，共 10 分）
Scientists have found a dinosaur’s tail with feathers in amber.（改为被动语态） A dinosaur’s tail with feathers in amber by scientists.
People believe that amber is a key to nature’s secrets.（改为宾语从句） People believe a key to nature’s secrets.
Wang Wencai spent over 70 years studying plants.（对划线部分提问）
did Wang Wencai spend studying plants
Amber can tell us whether some species have changed.（改为一般疑问句）
amber us whether some species have changed
He didn’t stop his research because he loved nature.（改为同义句） He his research because of his for nature.
八、书面表达（20 分）
自然充满了奥秘，探索自然能让我们更好地了解世界。请以 “My View on Nature Exploration” 为题，写一篇英语短文，谈谈你对自然探索的看法。要求：
内容包括：自然探索的意义、你知道的自然探索成就以及我们应该如何对待自然探索；
词数 80 - 100 左右；
语句通顺，语法正确，条理清晰。
Unit 5 Looking into nature 单元练习 参考答案
一、单项选择（10 分）
1.B 2. A 3. B 4. A 5. A 6.A 7. B 8. B 9. C 10. B
二、按要求完成句子（10 分）
1.didn’t believe 2.What can 3.were discovered 4.he would 5.so that
三、语法填空（10 分）
1.discovered 2. unlocking 3. believed 4. proved 5. changed
6.devoted 7. spent 8. carried 9. proves 10. regarded
四、补全对话（10 分）
B 2. C 3. A 4. E 5. D
五、阅读理解（20 分）
（A）1.B 2. A 3. C 4. D 5. B （B）1.B 2. B 3. C 4. B 5. A
六、词汇运用（10 分）
1.unlock 2. have discovered 3. believe 4. devoted 5. changed
6.regarded 7. effort 8. proves 9. carried 10. unsolved
七、句型转换（10 分）
1.has been found 2.that amber is 3.How long 4.Can; tell 5.continued; love
八、书面表达（20 分）
参考范文
My View on Nature ExplorationNature is full of mysteries, and exploring it helps us understand the world better. It allows us to discover unknown species, learn about the past, and develop new technologies.Many great achievements come from nature exploration. For example, amber has helped scientists find that dinosaurs had feathers. Wang Wencai devoted his life to studying plants and discovered over 1,370 new species. These achievements show the value of exploration.We should take a positive attitude towards nature exploration. We need to put more effort into research, respect nature’s laws, and protect the environment while exploring. Only in this way can we unlock more secrets and live in harmony with nature.

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