Section Ⅰ Starting out & Understanding ideas

基礎(chǔ)訓(xùn)練

單詞拼寫(xiě) 根據(jù)首字母或漢語(yǔ)提示，用本部分所學(xué)單詞的正確形式填空。

1.Jim is always m Miss Li in class， which makes her quite angry.

2.A have long had the feeling that the places we live in can affect our thoughts， feelings and behavior.

3.A large amount of solar energy has been c into electrical energy since amounts of advanced equipment were introduced.

4.Our football players gave a s performance in the final and we all cheered.

5.There’s a new （前沿） in 3D printing that’s beginning to come into focus： food.

6.The park on the （濱水地區(qū)） is bound to be a good place for rest and entertainment.

7.We once walked across a frozen （池塘） at two in the morning.

8.All the workers were working day and night to make sure the （管道系統(tǒng)） system ran smoothly.

選擇填空 用方框中所給短語(yǔ)的適當(dāng)形式填空。

respond to take... for granted live in harmony with covert... into meet the needs of

1.We must never lose sight of the fact that man must nature.

2.Traditional teaching methods can’t the social and economic development.

3.Capturing energy from the sun and it electricity to run your toaster sounds like magic.

4.We are always been told not any emails requesting personal information， no matter how official they look.

5.Don’t anything . You had better know that the harder you work， the luckier you’ll be.

課文語(yǔ)法填空

Trees， plants and flowers are all around us and we enjoy their beauty every day. Nature is presented in various 1 （architect） designs as well.

People 2 interest is exploring the relationship between art and science will enjoy Singapore’s ArtScience Museum. The building was designed 3 （show） the connection between nature and the modern city environment. Visitors are often amazed to find themselves in an urban building that so 4 （true） captures the beauty of natural forms.

Harare’s Eastgate Centre is 5 superb example of biomimicry. Zimbabwean architect Mick Pearce was inspired to create the Centre while 6 （watch） a nature documentary in which termites were constructing their nests. The design reduces the need for traditional air conditioning and heating systems.

The world’s first algae--powered building is in Hamburg， Germany， whose surface is covered in panels that contain algae. The panels capture heat 7 the sun and convert it into energy that 8 （power） the building. And the algae inside the panels can 9 （harvest） and used to produce fuel.

10 （create） buildings such as these enables us to live in closer harmony with our environment.

1. 2. 3. 4. 5.

6. 7. 8. 9. 10.

閱讀理解

Traditionally， robots have been hard， made of metal and other rigid materials. But a team of scientists at Harvard University in the US has managed to build an entirely soft robot—one that draws inspiration from an octopus （章魚(yú)）.

Described in science journal Nature， the Octobot could pave the way for more effective autonomous robots that could be used in search， rescue and exploration. “The Octobot is a minimal system which may serve as a foundation for a new generation of completely soft， autonomous robots，” the study’s authors wrote.

Robots built for precise， repetitive movements in a controlled environment don’t do so well on rough terrains （地形） or in unpredictable conditions. And they aren’t especially safe around humans， because they’re made out of hard and heavy parts that could be potentially dangerous to their users.

So researchers have been working on building soft robots for decades. They’ve taken inspiration from nature， looking to animals from jellyfish to cockroaches， which are often made up of more flexible matter.

But creating a completely soft robot remains a challenge. Even if engineers build a silicone

（硅酮） body， it’s still a grand challenge to construct flexible versions of essential parts， such as a source of power.

“Although soft robotics is still in its early stage， it holds great promise for several applications， such as search-and-rescue operations and exploration，” Barbara Mazzolai and Virgilio Mattoli of the Italian Institute of Technology Center for Micro-BioRobotics， wrote in a comment. “Soft robots might also open up new approaches to improving wellness and quality of life.”

1. What is the special feature of Octobot？

A. It’s very small. B. It’s made of metal.

C. It’s soft. D. It’s like an octopus.

2. What is the weakness of traditional robots？

A. They’re hard to control. B. They’re too heavy to move.

C. They can’t predict conditions. D. They can’t always behave well.

3. Which is the most challenging part in building Octobot？

A. Its silicone body. B. Its complex structure.

C. Its precise movements. D. Its flexible power source.

4. What is the possible application of Octobot according to the text？

A. Medical research. B. Life rescue. C. Machine operation. D. House cleaning.

閱讀七選五

Nature has a lot to offer. 1 Here are some valuable life lessons.

Respect your roots. With time， a young tree grows into full-grown one; something that was so tiny and delicate develops into a strong tree capable of supporting others. However tall it grows， its roots are firmly buried where it once rose. 2 Hopefully， we ought to give something back to those humble beginnings that developed us into who we are.

Let the sorrows （傷心事） disappear. If you cut a hole in the tree， it will grow around it. Whatever may come in its way， a river will continue to flow. Similarly， whatever sorrow may break your heart， know that life goes on. 3

Learn to coexist peacefully. Nature provides every creature a chance to exist， however big or small it may be. 4 The tiger eats the antelope; without the antelope， the tiger wouldn’t survive. Likewise， without tigers， the overpopulation of antelopes would cause them to starve to death.

5 Just like the icy cold snow melts in the warmth of spring to give birth to fresh green leaves， come autumn these leaves age into shades of gold only to be once again buried in the cold winter.

What to learn from nature is limitless. Respect， admire her and emulate （仿效） her ways into your life.

A. Change is unavoidable.

B. She inspires creatures to challenge themselves.

C. It is essential to maintain the balance of nature.

D. She teaches us values that may lead to a full and happy life.

E. The pain will weaken and enable you to grow in the process.

F. But the existence of one creature depends on the existence of the other.

G. We should learn to keep ourselves grounded， respect and hold on to our origins.

1. 2. 3. 4. 5.

Section Ⅱ Using language

基礎(chǔ)訓(xùn)練

單句語(yǔ)法填空 在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。

1.Some （physician） do believe that there is nothing better than using food as medicine.

2.The rich life experiences and （wise） of elderly people are treasures.

3.The research team always take their inspiration the natural world， watching house spiders move up and down their webs.

4.While the adults go out at night for food， the young （bat） hang out in the cave for four or five weeks.

5.The UN Climate Change Conference brings together experts from around the world to seek solutions reducing greenhouse gas emissions.

6.The officer suggested that this new technology should （employ） in related fields as soon as possible.

7.The purpose of education is （develop） a fine personality in children.

8.Spring is the best season （sow） seeds while autumn is the season when farmers harvest their crops.

單元語(yǔ)法填空 閱讀下面短文，根據(jù)上下文語(yǔ)境，結(jié)合本單元所學(xué)語(yǔ)法知識(shí)完成短文。

A fairy was flitting softly through the blue sky when she saw a King and a Queen weeping in a garden.

“ 1 （see） is believing，” the fairy said to herself. “A King or a Queen could be sad sometimes.” The Queen said， “It would be so nice 2 （have） a child.”

“Indeed. What a joy it would be 3 （take） care of a child of our own！ Is it a good idea 4 （try） some magic grasses or flowers？” said the King.

Without a word， she looked up at him longingly.

The fairy decided 5 （do） the couple a great favor.

Soon the Kingdom had a lovely princess. The King invited seven fairies 6 （be） present at the great event. Suddenly， the gate opened wide.

7 （stand） in the middle of the hall was a witch in black. “The King had invited all the fairies but I did not hear from him，” she said coldly to the Queen. The King found it hard 8 （put） up with that.

“How would it be 9 （learn） I did not invite you？”

“I don’t care，” she turned to the Queen with a smile. “But now I am here. I don’t know what

10 （wear） and how to behave. I don’t know whether to laugh or cry at this special moment.”

1. 2. 3. 4. 5.

6. 7. 8. 9. 10.

完形填空

I looked out of the door of my 100-year-old house and saw my newly built garden. I realized nothing is rubbish. I was full of 1 and appreciation.

I 2 to look at the things that we usually think of as 3 —plastic bags， polluted water， rubber bands， and newspapers， clothes and furniture we 4 . I also began to think， act and live according to a belief that all things have the 5 of being reused as long as we try to 6 it. And I explored the worth of 7 . I mean recycling isn’t just about 8 rubbish like putting glass and paper in 9 bins. It also requires creativity， commitment and even love.

My neighbors would put the autumn 10 by the roadside to be picked up by the garbage truck. This didn’t 11 with my newfound concept of recycling trash， so I made a new 12 with moving boxes and put up a 13 saying， “Dump （傾倒） leaves here.” I watched carefully through the autumn as my neighbors 14 the leaves in the new garden. I also watered the leaves 15 with rainwater and collected dogs’ waste as fertilizer. Then I 16 flower seeds. Finally， I had a new 17 garden， full of colorful flowers.

Nothing has to be really 18 . If you try hard enough， everything can be recycled. I even used my bath water to water my garden， though it might be a little 19 for my friends. But I think if we all can turn waste， sometimes a little dirty， into 20 ， the world will be a much better place.

1. A. joy B. sympathy C. doubt D. courage

2. A. hurried B. expected C. liked D. started

3. A. wealth B. garbage C. investments D. necessities

4. A. packed up B. brought out C. threw away D. gave away

5. A. value&79b5b06295fe30072bd06aac4be552e4nbsp; B. request C. cost D. consequence

6. A. own B. find C. remember D. believe

7. A. collecting B. acting C. recycling D. saving

8. A. sorting B. picking C. spotting D. recording

9. A. moving B. clean C. limitless D. separate

10. A. fruit B. corn C. leaves D. vegetables

11. A. compare B. deal C. meet D. fit

12. A. platform B. garden C. grocery D. bin

13. A. fence B. tent C. sign D. picture

14. A. put B. swept C. ignored D. sought

15. A. willingly B. quietly C. seriously D. freely

16. A. bought B. sowed C. removed D. kept

17. A. big B. popular C. imaginative D. attractive

18. A. useless B. timeless C. priceless D. hopeless

19. A. exciting B. special C. annoying D. unacceptable

20. A. money B. treasure C. pleasure D. scenery

語(yǔ)法填空

Do you remember the Greek legend in which Daedalus， 1 （inspire） by birds， built wings for his son Icarus and himself so they could escape from the tyrant （暴君） Minos？ Then you 2 （sure） remember that this journey did not go so well. The wax （蠟） on the wings melted when Icarus flew too near the sun and he crashed. 3 is interesting about this story is that Daedalus’ inspiration was Mother Nature， which 4 （lead） us to the topic of bionics. Nature has been and is a role model for many inventions and achievements， 5 instance in packaging，6ZPDRsS+0ql/4FUIUJyg8Q== technology and architecture.

Take the Sydney Opera House as an example. The large size of the roof construction was a real challenge. Architect Jorn Utzon drew inspiration from palm fronds （棕櫚葉） and the roof was not modeled after sails， as popularly 6 （assume）， but rather after orange peel.

Another example is the Multihalle in the Herzogenried Park. It 7 （call） “the Mannheim marvel” because it is the 8 （large） self-supporting structure in Europe. It can accommodate 2，600 9 （visit） on 10，000 square meters without a single support column. This tent-roof has been made possible by 10 unique lattice （格子框架） shell construction. Its designer Frei Otto took his inspiration from spider-web structures.

1. 2. 3. 4. 5.

6. 7. 8. 9. 10.

Section Ⅲ Developing ideas

基礎(chǔ)訓(xùn)練

單詞填空 用所給詞的適當(dāng)形式填空。

1.The poet has a hope of life and the heart， living in harmony with nature， and gaining happiness and spiritual . （pure）

2.In the morning， Simon for Russia. But fortunately I saw him shortly before his

. （depart）

3.I need a job that really me， and I can get great joy and from it. （fulfil）

4.Some of us agreed to go with her. But some are still to do that. （reluctant）

5.It is unavoidable by others， though these feelings of and hurt won’t go away immediately. （reject）

6.He was a man full of ， and he is older and after ten years in the business. （wise）

單句表達(dá) 根據(jù)括號(hào)內(nèi)提示翻譯句子。

1. Jane很隨和，我們和她在一起很自在。（at ease with）

2. John在畢業(yè)前一年就退學(xué)了。（withdraw from）

3. Nina不是一個(gè)向困難屈服的姑娘。（resign oneself to）

4. 離開(kāi)了朋友們，他感到很孤獨(dú)。（depart， 現(xiàn)在分詞作狀語(yǔ)）

5. 走少有人走的路需要很大的勇氣。（It takes... to do...）

提示寫(xiě)作

選用所給詞匯或句型造句，并組成一段連貫的短文（80詞左右）。

wonder achieve try hard to in the same way go through

too... to... ... so that... It takes... to do...

閱讀理解

A

I live in a second-floor flat with an ancient tree right on the corner of the house. The house and the tree have been here， side by side， for well over a century. No one really knows how old the tree is， but it was already there when builders started on the house at the beginning of the 1900s.

It was still rather young and flexible back then， so it easily welcomed the new structure into its path. It bent and adjusted itself to make room， and to find the space to grow big and strong and wise， which means that some hundred years later， the solid， strong branches of the tree reach around two full sides of my home.

The tree is covered in moss （苔蘚）， which is， in turn， crawling with all sorts of insects. I have never seen the insects， by the way， I just know that they’re there because of all the birds trying to pick them out. They are always hopping around， looking for this and that and singing songs. I feel like I have become part of the ecosystem. When I’m eating breakfast or making dinner in the kitchen， I can look out and see a bird hopping around skillfully. When I’m sitting in the living room， reading or drinking tea， I can suddenly find myself face to face with another bird. We’ll be staring at each other and being at ease with each other. Even as I write this—a white feather comes floating down by my side， probably from one of the resident pigeons.

As I don’t have the luxury （奢侈） of a garden， this tree makes me feel connected to the outdoors. Such is an ancient tree， a tree that itself is home to many other creatures—that feels different. It is as if it has adopted me and made me a part of its world， without ever asking for something in return. But if needs be， I know that it can count on me and I will protect it with all my strength.

1. What can we learn about the flat the author lives in？

A. It’s built in an ancient tree. B. It’s hugged by a giant tree.

C. It’s decorated with branches. D. It’s surrounded by a garden.

2. What can we infer from the author’s description in Paragraph 3？

A. Birds keep her warm company. B. She has adopted the resident pigeons.

C. Moss makes her flat cool. D. She has been bothered by the insects.

3. What does the author really treasure？

A. The close-to-nature life. B. The luxurious garden.

C. The spacious house. D. The sociable neighbor.

4. What word can best describe the author’s feeling？

A. Excited. B. Surprised. C. Content. D. Peaceful.

B

Many of us are disgusted （厭惡的） by spiders， or even afraid of them. But do you know that a spider’s natural color may have many practical applications in our66600d71b1cf25861b43eb9834c32af6724940d85e726d8383ed4855c36abbe2 daily life？ For example， it can inspire a new shade of blue textiles （紡織品） and offer a solution to the glare on the screen of your phone when you’re out in the sun.

This color is a shade of blue， inspired by the cobalt blue tarantula—a species of spider that is native to the rainforests of Southeast Asia. What surprised scientists who observed the eight-legged furry spider was that its color did not change at all， even when viewed from different angles.

A team of scientists， led by Bill Hsiung from the University of Akron in Ohio， have been studying tarantulas for some time. Blue is a rare color in the animal kingdom. The researchers set out to find the exact nature of this blue. They found that the outer body of the tarantula is covered by tiny crystalline （晶狀的） structures. These structures act like a mirror and when light strikes them， they reflect only one particular wavelength of light-blue. This kind of natural color is referred to as the “structural color”.

Usually， when colors are viewed from different angles， they appear different because of how light is reflected. This is because of a phenomenon known as iridescence （虹彩）. However， the blue color produced by tarantulas appears the same from all angles. It is the tiny crystals on the tarantula’s body arranged in a flower-like shape that reduce iridescence.

Scientists have known about structural colors for a while， but they have not seen them used for dye （染料）. With a clearer understanding of how “structural colors” work， scientists can now create a color similar to the tarantula blue to dye textiles and other products.

5. What is special about the cobalt blue tarantula？

A. Its color is unchangeably blue. B. Its smell is naturally disgusting.

C. Its furs can be made into textiles. D. Its legs look crystal clear in the sun.

6. What can we learn about the tarantula’s crystalline structures？

A. They shorten the wavelength of light. B. They merely reflect the light of blue.

C. They determine the size of a tarantula. D. They absorb much light on a tarantula’s body.

7. What is the author’s purpose in writing Paragraph 4？

A. To introduce the tarantula’s body structures.

B. To explain the theory of the structural color.

C. To show the phenomenon of color iridescence.

D. To discuss the importance of reflection angles to colors.

8. What is the best title for the text？

A. A Color Inspired by a Spider B. The Development of Blue Textiles

C. The Cobalt Blue Tarantula—a Rare Spider D. A Spider with Structural Colors Discovered

完形填空

Before I went to Nature High Summer Camp， I didn’t have many opinions about the environment—I 1 the environment was for other people to worry about. That 2 didn’t last long at the camp. I 3 learned about land use and forest management and started to 4 the world around me.

The person who 5 me most was Diane. She had worked in the 6 for twenty years and was by far the most 7 professional there. When she started talking， I hung on her every 8 and thought that everything she said made sense.

Diane 9 me by suggesting that putting out forest fires isn’t 10 a good thing—in fact， the cycle of nature makes it 11 that fires take place because they clear out dead materials and enrich the 12 . Because the Forest Service put out all the fires in the past， the accumulation

（堆積） of dead materials meant that a forest fire would grow bigger and consume 13 .

Diane said that 14 logging （伐木） would actually help the area because it would clear out the 15 trees and allow new trees to grow. Diane added that luckily necessary logging consumption had increased， which could 16 the environment.

I’ve 17 a lot from Diane. I 18 that humans should protect the environment. There are other 19 for us to do the environment a favor， such as planting trees， 20 paper and recycling water.

1. A. disagreed B. imagined C. appreciated D. considered

2. A. intention B. course C. explanation D. opinion

3. A. finally B. normally C. secretly D. unwillingly

4. A. argue about B. care about C. hang around D. sail around

5. A. supported B. trusted C. influenced D. worried

6. A. forest B. factory C. school D. city

7. A. polite B. experienced C. satisfied &ntN2HkSIRFbwInRgs8tLnQg==bsp; D. curious

8. A. invitation B. role C. choice D. word

9. A. warned B. informed C. shocked D. encouraged

10. A. likely B. merely C. always D. ever

11. A. necessary B. easy C. worthless D. possible

12. A. ecosystem B. vegetation C. situation D. soil

13. A. fewer B. more C. harder D. better

14. A. complete B. endless C. selective D. free

15. A. dead B. thick C. newborn D. sick

16. A. help B. ignore C. change D. destroy

17. A. borrowed B. learned C. suffered D. asked

18. A. promised B. regretted C. realized D. admitted

19. A. reasons B. materials C. resources D. ways

20. A. cutting B. saving C. making D. using

Writing

話題表達(dá)指導(dǎo)

話題介紹

話題：自然的啟示。要求我們通過(guò)對(duì)本單元核心知識(shí)的學(xué)習(xí)，能夠描繪我們?cè)谌粘Ｉ钪杏^察到的某個(gè)自然現(xiàn)象，感悟這種自然現(xiàn)象帶給我們的啟示，寫(xiě)一篇具有啟發(fā)性的短文。

建議體裁：夾敘夾議。

注意事項(xiàng)：選取的主題應(yīng)與自然相關(guān)且具有生活意義或富有哲理，比如適應(yīng)、毅力、勤奮、生存等。同時(shí)，要清楚地闡述自然現(xiàn)象帶給我們的啟示，并說(shuō)明我們?cè)谏钪腥绾芜\(yùn)用它。另見(jiàn)下表：

題例導(dǎo)學(xué)

題目

假定你是李華，你校英文報(bào)正在開(kāi)展主題為“Observing Nature”的征文活動(dòng)。請(qǐng)寫(xiě)一篇短文投稿，內(nèi)容包括：

1. 背景介紹；

2. 觀察到的自然現(xiàn)象；

3. 獲得的啟示。

注意：

1. 詞數(shù)100左右；

2. 可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

思路引導(dǎo)1·要點(diǎn)分析

1. 背景：簡(jiǎn)單說(shuō)明你是怎么發(fā)現(xiàn)這一自然現(xiàn)象的（在什么情況下或正在做什么時(shí)）；

2.自然現(xiàn)象：滴水穿石、螞蟻搬家、燕子筑巢、小草再生、早鳥(niǎo)覓食等，重點(diǎn)描述你所觀察的對(duì)象做了什么，有什么樣的反應(yīng)，最終獲得怎樣的一種結(jié)果等；

3. 啟示：向自然學(xué)習(xí)，在面對(duì)生活中的種種問(wèn)題或困難時(shí)，也應(yīng)做到團(tuán)結(jié)、勤奮、頑強(qiáng)不屈、堅(jiān)持不懈等。

思路引導(dǎo)2·本單元語(yǔ)言知識(shí)運(yùn)用

根據(jù)漢語(yǔ)意思及提示翻譯句子。

1. 我和父母在院子里談話時(shí)，看到一只燕子朝我們家飛來(lái)。（be doing... when...）

2. 就在那時(shí)，我意識(shí)到它將在我們的屋檐下筑巢。（It was... that...）

3. 它每次只能帶一點(diǎn)泥，這讓我懷疑它是否能完成這項(xiàng)任務(wù)。（carry， which）

4. 有這樣一個(gè)鄰居真的讓我的家人很開(kāi)心。（非謂語(yǔ)作主語(yǔ)）

5. 一開(kāi)始似乎不可能做成那件事。（it 作形式主語(yǔ)）

思路引導(dǎo)3·連句成篇

范例展示

On a spring morning， I was talking with my parents in the yard when I saw one swallow flying toward our house. When I got closer， I saw it carrying mud with its mouth. It was then that I realized it would build a nest under our roof.

I noticed that it could only carry a little mud at a time， which made me doubt whether it could complete the task. However， it kept carrying mud every day and after three days， a beautiful nest was completed. Having such a neighbor really made my family happy.

From the swallow I learn that we can realize our goal as long as we are determined， and have the spirit of perseverance though it may seem impossible to achieve that in the beginning.

話題表達(dá)

假定你是李華。在學(xué)習(xí)了本單元后，你們班準(zhǔn)備舉辦一場(chǎng)主題為“Learning from Nature”的班會(huì)活動(dòng)，要求同學(xué)們發(fā)言分享。請(qǐng)寫(xiě)一篇發(fā)言稿，內(nèi)容包括：

1. 背景介紹；

2. 觀察到的自然現(xiàn)象；

3. 獲得的啟示。

注意：

1. 詞數(shù)100左右；

2. 可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

Section Ⅳ Presenting ideas

核心短語(yǔ)與句型回顧

短語(yǔ)

1. 認(rèn)為……理所當(dāng)然

2.be to 目的是……，旨在……

3.be based 以……為基礎(chǔ)，基于……

4. a similar way 以相似的方式

5.be fed 用……喂養(yǎng)

6. ... into... 將……轉(zhuǎn)化為……

7.respond 對(duì)……做出回應(yīng)

8. the beauty of 捕捉……之美

9.live with 與……和諧共處

10.reduce 減少對(duì)……的破壞

11. 尋求……的解決方案

12. 從……中獲得靈感

13. into being 形成

14.in return 作為對(duì)……的回報(bào)

15.reaction 對(duì)……的反應(yīng)/回應(yīng)

16. from 從……中退出

17. the needs of 滿足……的需求

18. be critical 批評(píng)，批判

19. oneself to 致力于

20. with 不拘束，放松

21. oneself to 使自己順從（做）某事

22. sb a step closer to 使某人更接近……

句型

1.so... that...引導(dǎo)結(jié)果狀語(yǔ)從句

In fact， we are （如此習(xí)慣于它們以至于） we may even take them for granted...

2.不定式作主語(yǔ)

（滿足現(xiàn)今的需求） while protecting the world of tomorrow may be a challenge...

3.現(xiàn)在分詞作狀語(yǔ)

（看見(jiàn)一個(gè)口子） in the pupa， he realised that the butterfly was ready to emerge.

4.It takes （sb）... to...

（拒絕……需要相當(dāng)大的勇氣） the easy and familiar and instead try to live closer to nature...

5. while引導(dǎo)時(shí)間狀語(yǔ)從句的省略

Zimbabwean architect Mick Pearce was inspired to create the Centre （在觀看一部自然紀(jì)錄片時(shí)） in which termites were constructing their nets.

請(qǐng)根據(jù)提示，運(yùn)用本單元核心知識(shí)，以“人與自然的關(guān)系”為話題，談?wù)勀愕目捶ā?/p>

提示：需用以下句型。

1. The relationship between human beings and nature is...

2. We can learn from nature which helps us...

3. At the same time， nature needs our protection. So we should...