(共33张PPT)
UNIT 3 SEA EXPLORATION
语篇填空·一文练透
核心考点·精讲精练
梯级训练·循序渐进
语篇填空·一文练透
Trade and 1._________（curious） have formed the foundation of mankind's
greatest achievements. Marco Polo's tales inspired European explorers to search
2.____sea routes from west to east. However， merchants and explorers from the
East set sail from east to west long before Columbus first did. A trading route
across the sea 3._____________（extend） along the coasts of the Indian Ocean，
centred around Srilanka. Here， merchants from China and many other places met
4.____________（negotiate） trade deals. Zheng He， a major figure in Chinese
politics， was in a league of 5.____（he） own at that time. Under 6.____
command of Zheng He， the large fleets were a sight to behold and sailed west
on voyages of trade and exploration. These fleets set sail from the South China
curiosity
for
was extended
to negotiate
his
the
Sea across the Indian Ocean to the mouth of the Red Sea， and then to the east
coast of Africa. African royal families sent gifts such as giraffes as gestures of
friendship in return for gold， silk， and spices. 7._____________________ China
withdrew from further expeditions after 1433， these land and sea routes remained
active 8._________（channel） between other cultures for centuries.
Although/Though/While
channels
To reach out across the sea remains a strong desire today.The ancient sea
routes 9._________（travel） by Zheng He are being revisited with the 21st
Century Maritime Silk Road. With the latest technology in hand， the need to
trade and the desire to enhance bonds 10.__________（drive） China to reach out
across the sea far into the future.
travelled
will drive
核心考点·精讲精练
1.negotiate vt.商定；达成（协议） vi.谈判；磋商；协商 〈变〉negotiation n.协商；商定 negotiable adj.可协商的 negotiator n.谈判代表；协商者
（China Daily）They are required to protect car-hailing drivers' rights and interests
and negotiate with the drivers to lower the commission fees per order.他们被要求
保护网约车司机的权益，并与司机协商降低每笔订单的佣金。
①It is hoped that we will negotiate with them ______ how to solve the conflict.
②（五育·智育）The battle at Lake Changjin was a turning point in the war，
laying the foundation for the final armistice （停战） ___________（negotiate）.
③He warned that his economic programme for the country was not __________
（negotiate）.
about
negotiations
negotiable
④Participating in extra-curricular activities enables us to learn __________________
_______________________________.参加课外活动能让我们学会如何与其他同学进
行协商与合作。（投稿）
how to negotiate
and cooperate with other students
2.mercy n.仁慈；宽恕；恩惠 〈变〉merciful adj.仁慈的；宽大的；慈悲的 merciless adj.残忍的；无情的；毫不怜悯的 mercifully adv.幸运地；宽大地；仁慈地
（P32）Although this was banned in 1982， some countries are still “murdering”
these intelligent creatures without mercy.尽管早在1982年就已被禁止，一些国家仍然
在无情地“谋杀”这些聪明的生物。
①A ship without an anchor is ___ the mercy of the waves and winds.
②（五育·德育）Thanks to the ________（mercy） lady， I had money to buy a
ticket home.
③Grassland is destroyed________mercy so that dust storms come into being
affecting distant cities.
④____________________________________________instead of looking down upon
them.我们应该怜悯残疾人而不是看不起他们。（建议信）
at
merciful
without
We are supposed to show mercy to the disabled
3.mixture n.混合；结合体；混合物 〈变〉mix v.使混合；相协调；交往；调配；配制 mixed adj.混合的；混杂的
（柯林斯词典）They looked at him with a mixture of horror， envy， and awe.
他们带着一种恐惧、嫉妒和敬畏交织的复杂心情望着他。
①（2021·新高考Ⅰ卷）Jenna found the bread and put two slices into the egg
________（mix）.
②（五育·智育）They mix _____ ice in the air and fall to the ground as snow.
③It's much better if you can sometimes _________________________.你如果有时能
把工作和娱乐结合起来那就更好了。（建议信）
mixture
with
mix business with pleasure
4.possession n.拥有；控球状态；（常pl.）个人财产 〈变〉possess vt.拥有；具有 possessed adj.着了魔的；具有某种品质（或特征）
（牛津词典）A photo， a book of poems and a gold ring—this was the sum total
of his possessions.一张照片、一本诗集和一枚金戒指——这就是他的全部家当。
①Students __________（possess） good time-management skills are more likely to
perform well in universities.
②（五育·智育）She was __________（possess） of exceptional powers of
concentration.
possessing
possessed
③As foreign visitors are required ______________________________， make sure
you take it before departure.由于外国游客需要持有护照，你出发前一定要带护照。
（告知信）
to be in possession of a passport
④At this thought， an unbearable ____________________________.一想到这里，一
种难堪的羞愧感就笼罩着他。（读后续写·心理描写）
sense of shame possessed him
5.in hand 在手头；可供使用
（柯林斯词典）The business in hand was approaching some kind of climax. 手头
的事似乎快到紧要关头了。
①（2023·新高考Ⅰ卷）There you will find them prepared differently—more
dumpling and less soup， and the wrappers are pressed ____ hand rather than
rolled.
by
②（2023·新高考卷）When I handed ___the essay to my teacher， he read it，
laughed out loud， and said， “Great. Now， write it again.”
③With so much work ___hand， I can't spare some time for my holiday.
in
in
④（2022·全国甲卷）What's more，___________________________to call on more
people to protect the ocean.此外，我们也可以分发传单，呼吁更多的人保护海洋。
（话题写作·海洋保护）
we can also hand out leaflets
6.there is/was a（n）... need （for sb） to do sth
（P27）From a scientific point of view， there is an urgent need to study the
Arctic in order to understand climate change and its effects.从科学的角度来看，
（中国）迫切需要研究北极，以了解气候变化及其影响。
①（五育·智育）There is no need ________（look） up every new word in the
dictionary when you are reading.
to look
②_______________________________________________________some practical
skills but also raised our awareness of safety.毫无疑问，这次活动不仅使我们掌握
了一些实用的技能，而且增强了我们的安全意识。（活动报道）
There is no doubt that the activity not only equipped us with
③From my point of view， __________________________________without taking
any measures.在我看来，只是感到烦恼而不采取任何措施是没有任何意义的。（建
议信）
there is no point in just getting upset
梯级训练·循序渐进
Ⅰ.熟词生义
1.His wartime exploits were later made into a film.__________________
2.His writing career extended over a period of 40 years.______
3.All the people present at the meeting applaud my decision.______
英勇的行为；功绩
持续
赞许
Ⅱ.一词多义
1.bond
A.n.纽带；关系 B.n.保释金 C.v.使牢固结合 D.v.建立信任关系
①The new type of glue bonds a variety of surfaces in seconds.___
②They all bonded while writing graffiti together.___
③The following day， the truck driver was released on $4，000 bond.___
④The experience created a very special bond between us.___
C
D
B
A
2.arrest
A.v.逮捕；拘留 B.v.吸引 C.n.逮捕
#b#
D.n.停止；中止
①He died after suffering a cardiac （心脏的） arrest.___
②She was under arrest on suspicion of murder.___
③Arrested by the latest electronic toys， the little boy stood in front of the
windows without moving.___
④The policemen arrested the official for his taking bribes（受贿） many
times.___
D
C
B
A
1.（2023·浙江1月卷）Last week， in a public debate in San Francisco， a
software program called Project Debater beat its human __________（opponent），
including Noa Ovadia， Israel's former national debating champion.
opponents
2.（2021·全国甲卷）I come to you， hat ___hand， to apologize for the damage I
had indirectly caused and to ask you to reconsider my lifetime ban from the hotel.
in
3.Jobs in the space industry go far beyond the astronauts that receive widespread
media _________（cover）.
4.So you might decide to withdraw ______a stressful situation or reward yourself
with relaxing activities.
5.The little girl gave me a big hug in return ____ my help.
6.Our English teacher is a ________（mercy） woman， and she seldom criticises
us.
coverage
from
for
merciful
话题写作·海洋保护
1.海洋约占地球面积的四分之三，对维持自然和全球气候的平衡至关重要。（which引导非限制性定语从句）
________________________________________________________________
________________________________________________
The ocean, which covers about three quarters of the planet, is crucial to maintaining the balance of nature and global climate.
2.此外，海洋拥有丰富的资源，使我们能够解决能源短缺的问题。（possession；动词-ing形式作状语）
_________________________________________________________________________
___________________________
Besides, the ocean is in possession of abundant resources, enabling us to solve the problem of energy shortages.
3.为了子孙后代的利益，我们有责任保护好它，不应该让它任由人类摆布。（for the benefit of；at the mercy of）
_________________________________________________________________________
__________________________________________
We have a responsibility to well protect it for the benefit of future generations and should not put it at the mercy of humankind.
4.首先，我们有必要用手中的先进技术做任何我们能做的事情来做些改变。（in hand； there is a need for sb to do sth）
_________________________________________________________________
_______________________________________
First of all, there is a need for us to do whatever we can with advanced technologies in hand to make a difference.
5.同时，我们也应该呼吁我们周围的人采取行动。（meanwhile； take action）
________________________________________________________________
Meanwhile, we should also call on the people around us to take action.UNIT 3 SEA EXPLORATION
【语篇填空】
Trade and 1. (curious) have formed the foundation of mankind's greatest achievements. Marco Polo's tales inspired European explorers to search 2. sea routes from west to east. However, merchants and explorers from the East set sail from east to west long before Columbus first did. A trading route across the sea 3. (extend) along the coasts of the Indian Ocean, centred around Srilanka. Here, merchants from China and many other places met 4. (negotiate) trade deals. Zheng He, a major figure in Chinese politics, was in a league of 5. (he) own at that time. Under 6. command of Zheng He, the large fleets were a sight to behold and sailed west on voyages of trade and exploration. These fleets set sail from the South China Sea across the Indian Ocean to the mouth of the Red Sea, and then to the east coast of Africa. African royal families sent gifts such as giraffes as gestures of friendship in return for gold, silk, and spices. 7. China withdrew from further expeditions after 1433, these land and sea routes remained active 8. (channel) between other cultures for centuries.
To reach out across the sea remains a strong desire today.The ancient sea routes 9. (travel) by Zheng He are being revisited with the 21st Century Maritime Silk Road. With the latest technology in hand, the need to trade and the desire to enhance bonds 10. (drive) China to reach out across the sea far into the future.
【答案】1.curiosity 2.for 3.was extended 4.to negotiate 5.his 6.the 7.Although/Though/While 8.channels 9.travelled 10.will drive
【核心考点】
重点单词
1.negotiate vt.商定;达成(协议) vi.谈判;磋商;协商 <变>negotiation n.协商;商定 negotiable adj.可协商的 negotiator n.谈判代表;协商者
(China Daily)They are required to protect car-hailing drivers' rights and interests and negotiate with the drivers to lower the commission fees per order.他们被要求保护网约车司机的权益,并与司机协商降低每笔订单的佣金。
①It is hoped that we will negotiate with them how to solve the conflict.
②(五育·智育)The battle at Lake Changjin was a turning point in the war, laying the foundation for the final armistice (停战) (negotiate).
③He warned that his economic programme for the country was not (negotiate).
④Participating in extra-curricular activities enables us to learn .参加课外活动能让我们学会如何与其他同学进行协商与合作。(投稿)
【答案】①about ②negotiations ③negotiable ④how to negotiate and cooperate with other students
2.mercy n.仁慈;宽恕;恩惠 <变>merciful adj.仁慈的;宽大的;慈悲的 merciless adj.残忍的;无情的;毫不怜悯的 mercifully adv.幸运地;宽大地;仁慈地
(P32)Although this was banned in 1982, some countries are still “murdering” these intelligent creatures without mercy.尽管早在1982年就已被禁止,一些国家仍然在无情地“谋杀”这些聪明的生物。
①A ship without an anchor is the mercy of the waves and winds.
②(五育·德育)Thanks to the (mercy) lady, I had money to buy a ticket home.
③Grassland is destroyed mercy so that dust storms come into being affecting distant cities.
④ instead of looking down upon them.我们应该怜悯残疾人而不是看不起他们。(建议信)
【答案】①at ②merciful ③without ④We are supposed to show mercy to the disabled
3.mixture n. 混合;结合体;混合物 <变>mix v.使混合;相协调;交往;调配;配制
mixed adj.混合的;混杂的
(柯林斯词典)They looked at him with a mixture of horror, envy, and awe.他们带着一种恐惧、嫉妒和敬畏交织的复杂心情望着他。
①(2021·新高考Ⅰ卷)Jenna found the bread and put two slices into the egg (mix).
②(五育·智育)They mix ice in the air and fall to the ground as snow.
③It's much better if you can sometimes .你如果有时能把工作和娱乐结合起来那就更好了。(建议信)
【答案】①mixture ②with ③mix business with pleasure
4.possession n.拥有;控球状态;(常pl.)个人财产 <变>possess vt.拥有;具有 possessed adj.着了魔的;具有某种品质(或特征)
(牛津词典)A photo, a book of poems and a gold ring—
this was the sum total of his possessions.一张照片、一本诗集和一枚金戒指——这就是他的全部家当。
①Students (possess) good time-management skills are more likely to perform well in universities.
②(五育·智育)She was (possess) of exceptional powers of concentration.
③As foreign visitors are required , make sure you take it before departure.由于外国游客需要持有护照,你出发前一定要带护照。(告知信)
④At this thought, an unbearable .一想到这里,一种难堪的羞愧感就笼罩着他。(读后续写·心理描写)
【答案】①possessing ②possessed ③to be in possession of a passport ④sense of shame possessed him
短语句式
5.in hand在手头;可供使用
(柯林斯词典)The business in hand was approaching some kind of climax. 手头的事似乎快到紧要关头了。
①(2023·新高考Ⅰ卷)There you will find them prepared differently—more dumpling and less soup, and the wrappers are pressed hand rather than rolled.
②(2023·新高考卷)When I handed the essay to my teacher, he read it, laughed out loud, and said, “Great. Now, write it again.”
③With so much work hand, I can't spare some time for my holiday.
④(2022·全国甲卷)What's more, to call on more people to protect the ocean.此外,我们也可以分发传单,呼吁更多的人保护海洋。(话题写作·海洋保护)
【答案】①by ②in ③in ④we can also hand out leaflets
6.there is/was a(n)... need (for sb) to do sth
(P27)From a scientific point of view, there is an urgent need to study the Arctic in order to understand climate change and its effects.从科学的角度来看,(中国)迫切需要研究北极,以了解气候变化及其影响。
①(五育·智育)There is no need (look) up every new word in the dictionary when you are reading.
② some practical skills but also raised our awareness of safety.毫无疑问,这次活动不仅使我们掌握了一些实用的技能,而且增强了我们的安全意识。(活动报道)
③From my point of view, without taking any measures.在我看来,只是感到烦恼而不采取任何措施是没有任何意义的。(建议信)
【答案】①to look ②There is no doubt that the activity not only equipped us with ③there is no point in just getting upset
【梯级训练】
基础达标练
语境辨析练
Ⅰ.熟词生义
1.His wartime exploits were later made into a film.
2.His writing career extended over a period of 40 years.
3.All the people present at the meeting applaud my decision.
【答案】1.英勇的行为;功绩 2.持续 3.赞许
Ⅱ.一词多义
1.bond
A.n.纽带;关系 B.n.保释金 C.v.使牢固结合 D.v.建立信任关系
①The new type of glue bonds a variety of surfaces in seconds.
②They all bonded while writing graffiti together.
③The following day, the truck driver was released on $4,000 bond.
④The experience created a very special bond between us.
【答案】①C ②D ③B ④A
2.arrest
A.v.逮捕;拘留 B.v.吸引 C.n.逮捕
D.n.停止;中止
①He died after suffering a cardiac (心脏的) arrest.
②She was under arrest on suspicion of murder.
③Arrested by the latest electronic toys, the little boy stood in front of the windows without moving.
④The policemen arrested the official for his taking bribes(受贿) many times.
【答案】①D ②C ③B ④A
考点强化练
1.(2023·浙江1月卷)Last week, in a public debate in San Francisco, a software program called Project Debater beat its human (opponent), including Noa Ovadia, Israel's former national debating champion.
2.(2021·全国甲卷)I come to you, hat hand, to apologize for the damage I had indirectly caused and to ask you to reconsider my lifetime ban from the hotel.
3.Jobs in the space industry go far beyond the astronauts that receive widespread media (cover).
4.So you might decide to withdraw a stressful situation or reward yourself with relaxing activities.
5.The little girl gave me a big hug in return my help.
6.Our English teacher is a (mercy) woman, and she seldom criticises us.
【答案】1.opponents 2.in 3.coverage 4.from 5.for 6.merciful
写作衔接练
话题写作·海洋保护
1.海洋约占地球面积的四分之三,对维持自然和全球气候的平衡至关重要。(which引导非限制性定语从句)
______________________________________________________________________________
2.此外,海洋拥有丰富的资源,使我们能够解决能源短缺的问题。(possession;动词-ing形式作状语)
______________________________________________________________________________
3.为了子孙后代的利益,我们有责任保护好它,不应该让它任由人类摆布。(for the benefit of;at the mercy of)
______________________________________________________________________________
4.首先,我们有必要用手中的先进技术做任何我们能做的事情来做些改变。(in hand; there is a need for sb to do sth)
______________________________________________________________________________
5.同时,我们也应该呼吁我们周围的人采取行动。(meanwhile; take action)
______________________________________________________________________________
【答案】
1.The ocean, which covers about three quarters of the planet, is crucial to maintaining the balance of nature and global climate.
2.Besides, the ocean is in possession of abundant resources, enabling us to solve the problem of energy shortages.
3.We have a responsibility to well protect it for the benefit of future generations and should not put it at the mercy of humankind.
4.First of all, there is a need for us to do whatever we can with advanced technologies in hand to make a difference.
5.Meanwhile, we should also call on the people around us to take action.UNIT 3 SEA EXPLORATION
【语篇填空】
Trade and 1. (curious) have formed the foundation of mankind's greatest achievements. Marco Polo's tales inspired European explorers to search 2. sea routes from west to east. However, merchants and explorers from the East set sail from east to west long before Columbus first did. A trading route across the sea 3. (extend) along the coasts of the Indian Ocean, centred around Srilanka. Here, merchants from China and many other places met 4. (negotiate) trade deals. Zheng He, a major figure in Chinese politics, was in a league of 5. (he) own at that time. Under 6. command of Zheng He, the large fleets were a sight to behold and sailed west on voyages of trade and exploration. These fleets set sail from the South China Sea across the Indian Ocean to the mouth of the Red Sea, and then to the east coast of Africa. African royal families sent gifts such as giraffes as gestures of friendship in return for gold, silk, and spices. 7. China withdrew from further expeditions after 1433, these land and sea routes remained active 8. (channel) between other cultures for centuries.
To reach out across the sea remains a strong desire today.The ancient sea routes 9. (travel) by Zheng He are being revisited with the 21st Century Maritime Silk Road. With the latest technology in hand, the need to trade and the desire to enhance bonds 10. (drive) China to reach out across the sea far into the future.
【核心考点】
重点单词
1.negotiate vt.商定;达成(协议) vi.谈判;磋商;协商 <变>negotiation n.协商;商定 negotiable adj.可协商的 negotiator n.谈判代表;协商者
(China Daily)They are required to protect car-hailing drivers' rights and interests and negotiate with the drivers to lower the commission fees per order.他们被要求保护网约车司机的权益,并与司机协商降低每笔订单的佣金。
①It is hoped that we will negotiate with them how to solve the conflict.
②(五育·智育)The battle at Lake Changjin was a turning point in the war, laying the foundation for the final armistice (停战) (negotiate).
③He warned that his economic programme for the country was not (negotiate).
④Participating in extra-curricular activities enables us to learn .参加课外活动能让我们学会如何与其他同学进行协商与合作。(投稿)
2.mercy n.仁慈;宽恕;恩惠 <变>merciful adj.仁慈的;宽大的;慈悲的 merciless adj.残忍的;无情的;毫不怜悯的 mercifully adv.幸运地;宽大地;仁慈地
(P32)Although this was banned in 1982, some countries are still “murdering” these intelligent creatures without mercy.尽管早在1982年就已被禁止,一些国家仍然在无情地“谋杀”这些聪明的生物。
①A ship without an anchor is the mercy of the waves and winds.
②(五育·德育)Thanks to the (mercy) lady, I had money to buy a ticket home.
③Grassland is destroyed mercy so that dust storms come into being affecting distant cities.
④ instead of looking down upon them.我们应该怜悯残疾人而不是看不起他们。(建议信)
3.mixture n. 混合;结合体;混合物 <变>mix v.使混合;相协调;交往;调配;配制
mixed adj.混合的;混杂的
(柯林斯词典)They looked at him with a mixture of horror, envy, and awe.他们带着一种恐惧、嫉妒和敬畏交织的复杂心情望着他。
①(2021·新高考Ⅰ卷)Jenna found the bread and put two slices into the egg (mix).
②(五育·智育)They mix ice in the air and fall to the ground as snow.
③It's much better if you can sometimes .你如果有时能把工作和娱乐结合起来那就更好了。(建议信)
4.possession n.拥有;控球状态;(常pl.)个人财产 <变>possess vt.拥有;具有 possessed adj.着了魔的;具有某种品质(或特征)
(牛津词典)A photo, a book of poems and a gold ring—
this was the sum total of his possessions.一张照片、一本诗集和一枚金戒指——这就是他的全部家当。
①Students (possess) good time-management skills are more likely to perform well in universities.
②(五育·智育)She was (possess) of exceptional powers of concentration.
③As foreign visitors are required , make sure you take it before departure.由于外国游客需要持有护照,你出发前一定要带护照。(告知信)
④At this thought, an unbearable .一想到这里,一种难堪的羞愧感就笼罩着他。(读后续写·心理描写)
短语句式
5.in hand在手头;可供使用
(柯林斯词典)The business in hand was approaching some kind of climax. 手头的事似乎快到紧要关头了。
①(2023·新高考Ⅰ卷)There you will find them prepared differently—more dumpling and less soup, and the wrappers are pressed hand rather than rolled.
②(2023·新高考卷)When I handed the essay to my teacher, he read it, laughed out loud, and said, “Great. Now, write it again.”
③With so much work hand, I can't spare some time for my holiday.
④(2022·全国甲卷)What's more, to call on more people to protect the ocean.此外,我们也可以分发传单,呼吁更多的人保护海洋。(话题写作·海洋保护)
6.there is/was a(n)... need (for sb) to do sth
(P27)From a scientific point of view, there is an urgent need to study the Arctic in order to understand climate change and its effects.从科学的角度来看,(中国)迫切需要研究北极,以了解气候变化及其影响。
①(五育·智育)There is no need (look) up every new word in the dictionary when you are reading.
② some practical skills but also raised our awareness of safety.毫无疑问,这次活动不仅使我们掌握了一些实用的技能,而且增强了我们的安全意识。(活动报道)
③From my point of view, without taking any measures.在我看来,只是感到烦恼而不采取任何措施是没有任何意义的。(建议信)
【梯级训练】
基础达标练
语境辨析练
Ⅰ.熟词生义
1.His wartime exploits were later made into a film.
2.His writing career extended over a period of 40 years.
3.All the people present at the meeting applaud my decision.
Ⅱ.一词多义
1.bond
A.n.纽带;关系 B.n.保释金 C.v.使牢固结合 D.v.建立信任关系
①The new type of glue bonds a variety of surfaces in seconds.
②They all bonded while writing graffiti together.
③The following day, the truck driver was released on $4,000 bond.
④The experience created a very special bond between us.
2.arrest
A.v.逮捕;拘留 B.v.吸引 C.n.逮捕
D.n.停止;中止
①He died after suffering a cardiac (心脏的) arrest.
②She was under arrest on suspicion of murder.
③Arrested by the latest electronic toys, the little boy stood in front of the windows without moving.
④The policemen arrested the official for his taking bribes(受贿) many times.
考点强化练
1.(2023·浙江1月卷)Last week, in a public debate in San Francisco, a software program called Project Debater beat its human (opponent), including Noa Ovadia, Israel's former national debating champion.
2.(2021·全国甲卷)I come to you, hat hand, to apologize for the damage I had indirectly caused and to ask you to reconsider my lifetime ban from the hotel.
3.Jobs in the space industry go far beyond the astronauts that receive widespread media (cover).
4.So you might decide to withdraw a stressful situation or reward yourself with relaxing activities.
5.The little girl gave me a big hug in return my help.
6.Our English teacher is a (mercy) woman, and she seldom criticises us.
写作衔接练
话题写作·海洋保护
1.海洋约占地球面积的四分之三,对维持自然和全球气候的平衡至关重要。(which引导非限制性定语从句)
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2.此外,海洋拥有丰富的资源,使我们能够解决能源短缺的问题。(possession;动词-ing形式作状语)
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3.为了子孙后代的利益,我们有责任保护好它,不应该让它任由人类摆布。(for the benefit of;at the mercy of)
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4.首先,我们有必要用手中的先进技术做任何我们能做的事情来做些改变。(in hand; there is a need for sb to do sth)
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5.同时,我们也应该呼吁我们周围的人采取行动。(meanwhile; take action)
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