資源簡介

Section Ⅰ TOPIC TALK & LESSON 1
Period 1　 單元詞匯表
1．_______ n．生物學 2．_______ vt.證明……有道理，為……辯護 3．infer vt.__________ 4．_________ vt.計算，核算 5．_______ n．障礙，壁壘 6．_________ adj.完全相同的，非常相似的 7．____________ adj.繁殖的，生殖的 8．wholly adv.______ 9．_______ adj.至關重要的，關鍵性的 10．_____ adj.很有可能，肯定會 11．____ adj.僅僅，只不過；極小的，極不重要的 12．_____ vt.濫用，妄用； 虐待 n．濫用；虐待 1．This rule was brought into being because the old law was ______ (abuse). 2．The aims of the organisation are ______(whole) peaceful. 3．20 per cent of the ____________(calculate) are wrong. 4．It is not ______ (mere) a job，but a way of life. 5．The two trees behave ___________ (identical)，but they have different purposes. 6．I ________ (infer) from the article that the pilot was responsible for the accident. 7．Her success had _________(justify) the faith her teachers had put in her. 8．Several red and white ________ (barrier) marked the road at intervals of about a mile.
1．capable adj.有能力的；足以勝任的→____________n．(完成困難事情的)能力，才能 2．innovate vi.& vt.革新，創新，改革→____________n．革新，創新 3．participate vi.參加→_______________n．參加，參與→_____________n．參加者，參與者 4．edit vi.& vt.編輯，編校；剪輯，剪接→_________n．版本(出版形式)；(廣播、電視節目的)一期，一輯；(報紙、雜志的)一份→________n．編輯；編者 5．artificial adj.人為的，人工的；虛假的→______________adv.人為地，虛假地 6．compare vi.& vt.比較，對比→____________n．比較 7．accurate adj.準確的，正確的→__________n．準確性 8．treat vt.對待；處理；治療；把……視為；招待→___________n．診療，治療，療法；對待方式 9．emotion n．強烈的情感，激情→___________adj.情緒的，情感的；敏感的；情緒激動的 1．Her later work does not bear __________ (compare) with her earlier novels. 2．The new drug is a major step forward in the _________ (treat) of the disease. 3．They have the __________ (capable) to destroy the enemy in days rather than weeks. 4．Mothers are often the ones who provide _________(emotion) support for the family. 5．Technical __________ (innovate) plays an important role in increasing production. 6．The size of the conference was larger and there were more ____________ (participate) in it. 7．For the sake of historical ________ (accurate)，please permit us to state the true facts. 8．The second _______(edit) was published only in America.
1．________ 導致；通向 2．____________________ 與……比較 3．_______________ 致力于 4．______________ 照顧，照料 5．________________ 對……至關重要 6．_____________ 一定會 7．_______________ 能夠…… 8．_______________ 獨自 9．_______________ 被視為；被當作 10．__________ 依靠，依賴；相信，信任 1．They prove that agriculture ________________ development. 2．This announcement _____________ shake the confidence of the industry. 3．He said that his father's life work ________________ the conservation of the Longleat Estate. 4．____________________ the previous study，the new study expanded research subjects. 5．Abuse can ________ both psychological and emotional problems. 6．I'm not worried about her because she can ______________ herself.
由新知聯想已知
1．biology n.生物學 [聯想]?、賑hemistry n．化學 ②physics n．物理 ③geography n．地理 ④mathematics n．數學 2．wholly adv.完全地 [聯想]?、賢errible→terribly ②true→truly ③gentle→gently 3．crucial adj.至關重要的，關鍵性的 [聯想]?、賓ssential adj.必要的，重要的，基本的 ②basic adj.基本的 ③chief adj.最重要的，主要的，首席的 ④main adj.主要的，最重要的 4．bound adj.很有可能，肯定會 [聯想]?、賑ertain adj.肯定；確定；確實 ②sure adj.一定的，必定的；不容置疑的
第一篇課文
①clone vt.克隆，使無性繁殖
②the process of...……的過程
③artificially adv.人為地，虛假地
④for generations好幾代；好幾輩
⑤suitable adj.合適的，適宜的
⑥medium n．培養基
⑦identical adj.完全相同的，非常相似的
⑧twin n．雙胞胎中的一個
⑨attempt to do sth.嘗試做某事
⑩normally adv.通常；正常情況下；正常地；平常地
develop an illness患上一種疾病
mammal species哺乳動物物種
camel n．駱駝
cattle n．牛
a similar pattern of一種類似的類型
as well也
lead to導致；通向
a major issue一個主要的問題
forever adv.永遠；長久地
long-tailed adj.長尾的
primate n．靈長目動物
in comparison with 與……比較
non-reproductive adj.無生殖力的
complicated adj.復雜的，難懂的
wholly adv.完全地
be devoted to 致力于
take care of 照顧，照料
failure n．失?。皇〉娜嘶蚴?br/> eventually adv.最后；最終
break this technical barrier突破這個技術壁壘
edit vi.& vt.編輯，編校；剪輯，剪接
gene n．基因
a huge breakthrough 一項巨大的突破　
cure n．治療，治愈
clue n．線索，提示
have the potential to 有……的潛力/潛能
accurate adj.準確的，正確的
treatment n．診療，治療，療法；對待方式
provoke vt.激起，引起
emotion n．強烈的情感，激情
crucial adj.至關重要的，關鍵性的
be crucial for 對……至關重要
scientific advancement 科學的進步
raise moral concerns 引起道德方面的擔憂
be bound to 一定會
ethical adj.關于倫理的；合乎道德的
identity n．身份；特征；個性
be viewed as 被看作……
mere adj.僅僅，只不過；極小的，極不重要的
inferior adj.低級別的，下級的；差的，次的
abuse vt.濫用，妄用；虐待 n．濫用；虐待
a powerful instrument 一種強有力的工具
TO CLONE① OR NOT TO CLONE
Cloning is the process of② making an exact copy of a plant or animal and developing it either naturally or artificially③.Natural cloning has been going on for generations④.For example，gardeners have been using a form of cloning when they take a cutting from a plant and place it in a suitable⑤ medium⑥， such as soil.Another example of natural cloning is identical⑦ twins⑧， who are produced from the same egg[1].
[1]who引導定語從句，修飾先行詞identical twins。
For years，there had been attempts to clone⑨ animals artificially.The first successfully cloned animal was a sheep named Dolly[2] in 1996．At first，Dolly grew normally⑩， but later she developed an illness that is more normally found in much older animals[3].She lived for six and a half years，only half the life of the sheep from which she was cloned[4].After Dolly，scientists have cloned more than 20 mammal species ， including camels ， cattle ， deer，dogs，goats and mice.However，they have found a similar pattern of health problems with these other species as well .This has led to questions such as，“Will this be a major issue for all cloned animals？” “Will it continue to happen forever ？”．
[2] named Dolly是過去分詞短語作定語。
[3]that引導定語從句，修飾先行詞an illness。
[4]from which引導定語從句，修飾先行詞the sheep。
In January 2018，the cloning of two long-tailed monkeys，Zhong Zhong and Hua Hua，was announced by Chinese scientists.They were the first-ever primates (the order of mammals which include apes，monkeys，and humans) to have been cloned! In comparison with other species，cloning primates has proved to be “much harder”， and doing so with non-reproductive cells was even more complicated .Dr.Sun Qiang，director of the research team，said they had been wholly devoted to the research and had been taking care of more than 1，000 monkeys 24 hours a day，7 days a week for more than 5 years.There had been a number of failures before they eventually found a way to successfully clone a monkey.The reason they worked so hard to break this technical barrier was to get animals with edited genes and produce animal models that are helpful for medical research and human health.
The successful cloning of primates has led to worldwide praise as a huge breakthrough that might lead to cures for various diseases and may also offer clues on how to prevent the aging process[5].With this technology，we have the potential to raise a large number of monkeys with identical genes in a short amount of time，and we can even change their genes to suit research needs.This could help save research time，reduce the number of animals required for testing，produce more accurate results，and lead to more effective treatments .
[5]that引導定語從句，修飾先行詞a huge breakthrough；how引導賓語從句，作介詞on的賓語。
Cloning，however，continues to be an issue that causes a great deal of disagreement and provokes strong emotions .While some people believe it is crucial for scientific advancement ， others raise moral concerns .[6]They believe it is bound to lead to cloning of other species，and they worry about the ethical questions this raises.For example，they wonder if clones should be treated as objects or as individuals with their own identity .Furthermore，clones may be viewed as mere copies of originals thus being seen as inferior .Finally，they worry that some organisations may abuse the technology for unethical purposes.
[6]While引導讓步狀語從句，表示“盡管”。
So far，it is still unknown what will happen to Zhong Zhong and Hua Hua as they grow up.Researchers insist that the science of cloning should be further explored and advanced.As Einstein said，“Science is a powerful instrument.How it is used，whether it is a blessing or a curse to mankind，depends on mankind and not on the instrument.A knife is useful，but it can also kill.”
克隆還是不克?。?br/>克隆是通過自然或人為的方式，對植物或動物進行精確復制、培育的過程。自然克隆由來已久。例如，園丁們從植物上截取一段，放在合適的培養基中(例如土壤)，就是一種克隆。自然克隆的另一個例子是同卵雙胞胎，它們是由同一個卵子受精產生的。
多年來，人們一直在嘗試人工克隆動物。第一只成功克隆的動物是1996年的克隆羊多莉。起初，多莉發育正常，但后來患上了一種疾病，這種疾病更常見于更年老的動物。多莉活了六年半，壽命只有母體綿羊的一半。繼多莉之后，科學家已經克隆了20多種哺乳動物，包括駱駝、牛、鹿、狗、山羊和老鼠。然而，在這些物種的克隆動物身上，科學家們也發現了與多莉羊相似的健康問題。由此引發了一些疑問，例如：“這會是所有克隆動物的主要問題嗎？”“這個問題會永遠持續下去嗎？”。
2018年1月，中國科學家宣布成功克隆了兩只長尾猴，中中和華華。它們是有史以來首次被克隆的靈長類動物(哺乳動物的一個類別，包括猿、猴子和人類)！與其他的物種相比，克隆靈長類動物要“困難得多”，而使用非生殖細胞克隆則更為復雜。研究小組的負責人孫強博士說，他們全身心地投入到研究中，5年多來每周7天，每天24小時照看一千多只猴子。歷經多次失敗，他們最終找到了成功克隆猴子的方法。他們之所以如此努力地要突破這一技術壁壘，是為了獲得經過基因編輯的動物，研制有助于醫學研究和人類健康的動物模型。
靈長類動物的成功克隆獲得了全世界的贊譽，被認為是一項巨大的突破，從而為治愈多種疾病、延緩衰老提供線索。有了這項技術，我們就有可能在短時間內培育大量基因相同的猴子，甚至可以改變它們的基因，以適應研究需要。這有助于節省研究時間，減少實驗所需動物的數量，使實驗結果更準確、治療方法更有效。
但是，克隆仍是一個會引起很多爭議、激起強烈(反對)情緒的問題。盡管有些人認為這對于科學的進步至關重要，但也有人提出了道德方面的擔憂。他們認為這項技術必將導致其他物種的克隆，擔心由此會引發倫理問題。比如，他們提出克隆體是被當作物體還是具有獨特個性的個體。而且，克隆體可能會被看作母體的副本，因此被認為更低等。最后，他們擔心某些組織可能會出于不道德的目的濫用該技術。
到目前為止，我們仍不清楚中中和華華長大后會發生什么。研究人員認為，克隆科學應進一步得到探索與發展。正如愛因斯坦所言：“科學是一種強有力的工具。怎樣使用它，究竟是給人類帶來幸福還是帶來災難，完全取決于人類自己，而不取決于工具。刀子是有用的，但刀子也能殺人。”
Period 1
速記·重點詞匯——牢記詞形和詞義
1．biology　2．justify　3．推斷，推定　4．calculate　5．barrier
6．identical　7．reproductive　8．完全地　9．crucial
10．bound　11．mere　12．abuse
運用·語境填空——測試一下基本功
1．abused　2．wholly　3．calculations　4．merely
5．identically　6．inferred　7．justified　8．barriers
速記·派生詞匯——牢記詞形和詞義
1．capability 　2．innovation 　3．participation；participant
4．edition；editor 　5．artificially 　6．comparison
7．accuracy 　8．treatment 　9．emotional
運用·語境填空——測試一下基本功
1．comparison　2．treatment　3．capability　4．emotional
5．innovation　6．participants　7．accuracy　8．edition
速記·重點短語——記牢搭配和意義
1．lead to　2．in comparison with　3．be devoted to　4．take care of　5．be crucial for　6．be bound to　7．be capable of
8．on one's own　9．be treated as　10．depend on
運用·語境填空——測試一下基本功
1．is crucial for　2．is bound to　3．was devoted to
4．In comparison with　5．lead to　6．take care of
1 / 1(共34張PPT)
Period 1　
Section Ⅰ　TOPIC TALK & LESSON 1
UNIT 9　HUMAN BIOLOGY
主題語境
人與社會 —— 科學與技術
1．_______n．生物學
2．_______ vt.證明……有道理，為……辯護
3．infer vt.__________
4．_________ vt.計算，核算
5．_______n．障礙，壁壘
6．_________ adj.完全相同的，非常相似的
課時練案　單元詞匯表
biology
justify
推斷，推定
calculate
barrier
identical
7．____________ adj.繁殖的，生殖的
8．wholly adv.______
9．_______ adj.至關重要的，關鍵性的
10．_____ adj.很有可能，肯定會
11．____ adj.僅僅，只不過；極小的，極不重要的
12．_____ vt.濫用，妄用； 虐待n．濫用；虐待
reproductive
完全地
crucial
bound
mere
abuse
1．This rule was brought into being because the old law was _______ (abuse).
2．The aims of the organisation are ______(whole) peaceful.
3．20 per cent of the ____________(calculate) are wrong.
4．It is not ______ (mere) a job，but a way of life.
5．The two trees behave __________(identical)，but they have different purposes.
abused
wholly
calculations
merely
identically
6．I ________ (infer) from the article that the pilot was responsible for the accident.
7．Her success had _________(justify) the faith her teachers had put in her.
8．Several red and white ________ (barrier) marked the road at intervals of about a mile.
inferred
justified
barriers
1．capable adj.有能力的；足以勝任的→__________n．(完成困難事情的)能力，才能
2．innovate vi.& vt.革新，創新，改革→__________n．革新，創新
3．participate vi.參加→___________n．參加，參與→__________n．
參加者，參與者
4．edit vi.& vt.編輯，編校；剪輯，剪接→________n．版本(出版形式)；(廣播、電視節目的)一期，一輯；(報紙、雜志的)一份→________n．編輯；編者
capability
innovation
participation
participant
edition
editor
5．artificial adj.人為的，人工的；虛假的→__________adv.人為地，虛假地
6．compare vi.& vt.比較，對比→____________n．比較
7．accurate adj.準確的，正確的→__________n．準確性
8．treat vt.對待；處理；治療；把……視為；招待→_________n．診療，治療，療法；對待方式
9．emotion n．強烈的情感，激情→_________adj.情緒的，情感的；敏感的；情緒激動的
artificially
comparison
accuracy
treatment
emotional
1．Her later work does not bear __________ (compare) with her earlier novels.
2．The new drug is a major step forward in the _________ (treat) of the disease.
3．They have the __________ (capable) to destroy the enemy in days rather than weeks.
4．Mothers are often the ones who provide _________(emotion) support for the family.
comparison
treatment
capability
emotional
5．Technical _________ (innovate) plays an important role in increasing production.
6．The size of the conference was larger and there were more_________
(participate) in it.
7．For the sake of historical ________ (accurate)，please permit us to state the true facts.
8．The second _______(edit) was published only in America.
innovation
participants
accuracy
edition
1．________ 導致；通向
2．____________________ 與……比較
3．_______________ 致力于
4．______________ 照顧，照料
5．________________ 對……至關重要
6．_____________ 一定會
lead to
in comparison with
be devoted to
take care of
be crucial for
be bound to
7．_______________ 能夠……
8．_______________ 獨自
9．_______________ 被視為；被當作
10．__________ 依靠，依賴；相信，信任
be capable of
on one's own
be treated as
depend on
1．They prove that agriculture ____________ development.
2．This announcement ___________ shake the confidence of the industry.
3．He said that his father's life work ______________ the conservation of the Longleat Estate.
4．_________________the previous study，the new study expanded research subjects.
5．Abuse can _______ both psychological and emotional problems.
6．I'm not worried about her because she can ____________ herself.
is crucial for
is bound to
was devoted to
In comparison with
lead to
take care of
1．biology n.生物學
[聯想]?、賑hemistry n．化學
②physics n．物理
③geography n．地理
④mathematics n．數學
2．wholly adv.完全地
[聯想]　①terrible→terribly
②true→truly
③gentle→gently
詞匯聯想 由新知聯想已知
3．crucial adj.至關重要的，關鍵性的
[聯想]?、賓ssential adj.必要的，重要的，基本的
②basic adj.基本的
③chief adj.最重要的，主要的，首席的
④main adj.主要的，最重要的
4．bound adj.很有可能，肯定會
[聯想]?、賑ertain adj.肯定；確定；確實
②sure adj.一定的，必定的；不容置疑的
①clone vt.克隆，使無性繁殖
②the process of...……的過程
③artificially adv.人為地，虛假地
④for generations好幾代；好幾輩
⑤suitable adj.合適的，適宜的
⑥medium n．培養基
課下預習　第一篇課文
⑦identical adj.完全相同的，非常相似的
⑧twin n．雙胞胎中的一個
⑨attempt to do sth.嘗試做某事
⑩normally adv.通常；正常情況下；正常地；平常地
develop an illness患上一種疾病
mammal species哺乳動物物種
camel n．駱駝
cattle n．牛
a similar pattern of一種類似的類型
as well也
lead to導致；通向
a major issue一個主要的問題
forever adv.永遠；長久地
long-tailed adj.長尾的
primate n．靈長目動物
in comparison with 與……比較
non-reproductive adj.無生殖力的
complicated adj.復雜的，難懂的
wholly adv.完全地
be devoted to 致力于
take care of 照顧，照料
failure n．失?。皇〉娜嘶蚴?br/> eventually adv.最后；最終
break this technical barrier突破這個技術壁壘
edit vi.& vt.編輯，編校；剪輯，剪接
gene n．基因
a huge breakthrough 一項巨大的突破　
cure n．治療，治愈
clue n．線索，提示
have the potential to 有……的潛力/潛能
accurate adj.準確的，正確的
treatment n．診療，治療，療法；對待方式
provoke vt.激起，引起
emotion n．強烈的情感，激情
crucial adj.至關重要的，關鍵性的
be crucial for 對……至關重要
scientific advancement 科學的進步
raise moral concerns 引起道德方面的擔憂
be bound to 一定會
ethical adj.關于倫理的；合乎道德的
identity n．身份；特征；個性
be viewed as 被看作……
mere adj.僅僅，只不過；極小的，極不重要的
inferior adj.低級別的，下級的；差的，次的
abuse vt.濫用，妄用；虐待n．濫用；虐待
a powerful instrument 一種強有力的工具
TO CLONE① OR NOT TO CLONE
Cloning is the process of② making an exact copy of a plant or animal and developing it either naturally or artificially③.Natural cloning has been going on for generations④.For example，gardeners have been using a form of cloning when they take a cutting from a plant and place it in a suitable⑤ medium⑥，such as soil.Another example of natural cloning is identical⑦ twins⑧，who are produced from the same egg[1].
[1]who引導定語從句，修飾先行詞identical twins。
For years，there had been attempts to clone⑨ animals artificially.The first successfully cloned animal was a sheep named Dolly[2] in 1996．At first，Dolly grew normally⑩，but later she developed an illness that is more normally found in much older animals[3].She lived for six and a half years，only half the life of the sheep from which she was cloned[4].After Dolly，scientists have cloned more than 20 mammal species ，including camels ，cattle ，deer，dogs，goats and mice.However，they have found a similar pattern of health problems with these other species as well .This has led to questions such as，“Will this be a major issue for all cloned animals？”“Will it continue to happen forever ？”．
[2] named Dolly是過去分詞短語作定語。
[3]that引導定語從句，修飾先行詞an illness。
[4]from which引導定語從句，修飾先行詞the sheep。
In January 2018，the cloning of two long-tailed monkeys，Zhong Zhong and Hua Hua，was announced by Chinese scientists.They were the first-ever primates (the order of mammals which include apes，monkeys，and humans) to have been cloned! In comparison with other species，cloning primates has proved to be “much harder”，and doing so with non-reproductive cells was even more complicated .Dr.Sun Qiang，director of the research team，said they had been wholly devoted to the research and had been taking care of more than 1，000 monkeys 24 hours a day，7 days a week for more than 5 years.There had been a number of failures before they eventually found a way to successfully clone a monkey.The reason they worked so hard to break this technical barrier was to get animals with edited genes and produce animal models that are helpful for medical research and human health.
The successful cloning of primates has led to worldwide praise as a huge breakthrough that might lead to cures for various diseases and may also offer clues on how to prevent the aging process[5].With this technology，we have the potential to raise a large number of monkeys with identical genes in a short amount of time，and we can even change their genes to suit research needs.This could help save research time，reduce the number of animals required for testing，produce more accurate results，and lead to more effective treatments .
[5]that引導定語從句，修飾先行詞a huge breakthrough；how引導賓語從句，作介詞on的賓語。
Cloning，however，continues to be an issue that causes a great deal of disagreement and provokes strong emotions While some people believe it is crucial for scientific advancement ，others raise moral concerns .[6]They believe it is bound to lead to cloning of other species，and they worry about the ethical questions this raises.For example，they wonder if clones should be treated as objects or as individuals with their own identity .Furthermore，clones may be viewed as mere copies of originals thus being seen as inferior .Finally，they worry that some organisations may abuse the technology for unethical purposes.
[6]While引導讓步狀語從句，表示“盡管”。
So far，it is still unknown what will happen to Zhong Zhong and Hua Hua as they grow up.Researchers insist that the science of cloning should be further explored and advanced. As Einstein said，“Science is a powerful instrument.How it is used，whether it is a blessing or a curse to mankind，depends on mankind and not on the instrument. A knife is useful，but it can also kill.”
克隆還是不克??？
克隆是通過自然或人為的方式，對植物或動物進行精確復制、培育的過程。自然克隆由來已久。例如，園丁們從植物上截取一段，放在合適的培養基中(例如土壤)，就是一種克隆。自然克隆的另一個例子是同卵雙胞胎，它們是由同一個卵子受精產生的。
多年來，人們一直在嘗試人工克隆動物。第一只成功克隆的動物是1996年的克隆羊多莉。起初，多莉發育正常，但后來患上了一種疾病，這種疾病更常見于更年老的動物。多莉活了六年半，壽命只有母體綿羊的一半。繼多莉之后，科學家已經克隆了20多種哺乳動物，包括駱駝、牛、鹿、狗、山羊和老鼠。然而，在這些物種的克隆動物身上，科學家們也發現了與多莉羊相似的健康問題。由此引發了一些疑問，例如：“這會是所有克隆動物的主要問題嗎？”“這個問題會永遠持續下去嗎？”。
2018年1月，中國科學家宣布成功克隆了兩只長尾猴，中中和華華。它們是有史以來首次被克隆的靈長類動物(哺乳動物的一個類別，包括猿、猴子和人類)！與其他的物種相比，克隆靈長類動物要“困難得多”，而使用非生殖細胞克隆則更為復雜。研究小組的負責人孫強博士說，他們全身心地投入到研究中，5年多來每周7天，每天24小時照看一千多只猴子。歷經多次失敗，他們最終找到了成功克隆猴子的方法。他們之所以如此努力地要突破這一技術壁壘，是為了獲得經過基因編輯的動物，研制有助于醫學研究和人類健康的動物模型。
靈長類動物的成功克隆獲得了全世界的贊譽，被認為是一項巨大的突破，從而為治愈多種疾病、延緩衰老提供線索。有了這項技術，我們就有可能在短時間內培育大量基因相同的猴子，甚至可以改變它們的基因，以適應研究需要。這有助于節省研究時間，減少實驗所需動物的數量，使實驗結果更準確、治療方法更有效。
但是，克隆仍是一個會引起很多爭議、激起強烈(反對)情緒的問題。盡管有些人認為這對于科學的進步至關重要，但也有人提出了道德方面的擔憂。他們認為這項技術必將導致其他物種的克隆，擔心由此會引發倫理問題。比如，他們提出克隆體是被當作物體還是具有獨特個性的個體。而且，克隆體可能會被看作母體的副本，因此被認為更低等。最后，他們擔心某些組織可能會出于不道德的目的濫用該技術。
到目前為止，我們仍不清楚中中和華華長大后會發生什么。研究人員認為，克隆科學應進一步得到探索與發展。正如愛因斯坦所言：“科學是一種強有力的工具。怎樣使用它，究竟是給人類帶來幸福還是帶來災難，完全取決于人類自己，而不取決于工具。刀子是有用的，但刀子也能殺人?！?br/>THANKS

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