专题三 完形填空解题四防范——解密说明文、议论文
Ⅰ.体验高考
(2017·广东卷)Parents feel that it is difficult to live with teenagers.Then again，teenagers have
__1__
feelings about their parents，saying that it is not easy living with them.According to a recent research，the most common
__2__
between parents and teenagers is that regarding untidiness and daily routine tasks.On the one hand，parents go mad over
__3__
rooms，clothes thrown on the floor and their children's refusal to help with the
__4__.On the other hand，teenagers lose their patience continually when parents blame them for
__5__
the towel in the bathroom，not cleaning up their room or refusing to do the shopping at the supermarket.
The research，conducted by St.George University，shows that different parents have different
__6__
to these problems.However，some approaches are more
__7__
than others.For example，those parents who yell at their children for their untidiness，but
__8__
clean the room for them，have fewer chances of changing their children's
__9__.On the contrary，those who let teenagers experience the
__10__
of their actions can do better.For example，when teenagers who don't help their parents with the shopping don't find their favorite drink in the refrigerator，they are forced to
__11__
their actions.
Psychologists say that
__12__
is the most important thing in parentchild relationships.Parents should
__13__
to their children but at the same time they should lend an ear to what they have to say.Parents may
__14__
their children when they are untidy but they should also understand that their room is their own private space.Communication is a twoway process.It is only by listening to and
__15__
each other that problems between parents and children can be settled.
【语篇导读】 本文是一篇说明文，指出父母与十几岁的孩子之间存在矛盾冲突及其原因，不同父母对此采取的不同方法，以及心理学家对解决冲突的建议。
1．A.natural B．strong
C．guilty D．similar
解析 由not easy living with them (their parents) (孩子觉得与父母生活在一起不易)与difficult to live with teenagers(父母觉得与十几岁的孩子生活在一起很难)可知，孩子与父母有“相似的”感受。
答案 D
2．A.interest B．argument
C．link D．knowledge
解析 由前两句，可知父母之间有“矛盾”，再根据regarding untidiness and daily routine tasks(关于不整洁和日常事情)，对照各选项，只有argument(争吵)适合。
答案 B
3．A.noisy B．crowded
C．messy D．locked
解析 由前句的untidiness和后面的clothes thrown on the floor可知，房间是messy(凌乱不堪的)。
答案 C
4．A.homework B．housework
C．problem
D．research
解析 由上文提到的收拾房间之类的事，应是housework(家务活)。
答案 B
5．A.washing
B．using
C．dropping
D．replacing
解析 由后面的not cleaning up their room or refusing to do the shopping可知，这里应是dropping the towel in the bathroom，一起为blame them的原因。
答案 C
6．A.approaches
B．contributions
C．introductions
D．attitudes
解析 由下句的However，some approaches提示，可知这里是指“不同的父母对待这些问题有不同的‘方法'”，故选A项。
答案 A
7．A.complex
B．popular
C．scientific
D．successful
解析 从下面的例子可以看出，有的方法比别的方法更能“达到预期的目的(successful)”。下文中的do better也有提示作用。故选D项。
答案 D
8．A.later
B．deliberately
C．seldom
D．thoroughly
解析 yell at their children(对孩子大声叫喊)之后，意为“但是‘后来’又为他们清扫房间”。
答案 A
9．A.behavior
B．taste
C．future
D．nature
解析 根据上下文语境，应该是改变孩子不爱整洁的“行为(behavior)”。
答案 A
10．A.failures
B．changes
C．consequences
D．thrills
解析 据下文所举的例子“不帮父母去买东西”“在冰箱里就找不到自己最喜欢的饮料”可知，这是让孩子“感受到自己的行为产生的‘后果’”。故选C项。
答案 C
11．A.defend
B．delay
C．repeat
D．reconsider
解析 在有了上述经历之后，他们就会“重新考虑”他们的行动。
答案 D
12．A.communication B．bond
C．friendship
D．trust
解析 由下文中的Communication is a twoway process可知，此处填communication。
答案 A
13．A.reply
B．attend
C．attach
D．talk
解析 由but可知，要选与lend an ear to(＝listen to倾听)相对的talk，是转折关系，故选D项。
答案 D
14．A.hate
B．scold
C．frighten D．stop
解析 由but可知，要选与understand (理解)相对的scold(责骂)。
答案 B
15．A.loving
B．observing
C．understanding
D．praising
解析 此句是强调句型，是对前两句的总结，一句是说要lend an ear to(＝listen to倾听)，一句是说要understand (理解)，所以总结为“只有通过倾听和相互理解，父母与孩子之间的问题才可得到解决”。故选C项。
答案 C
Ⅱ.仿真模拟
Cloze 1
Where Has the Salt Come from? Every now and then，we meet a fact about our earth that makes us feel __1__ and no answer for the fact has yet been found.Such a __2__ is the existence of salt in the oceans.How did it get there?
We __3__ do not know how the salt got into the ocean! We do know，of course，that salt is watersoluble (可溶于水的)，and so passes into the oceans with rainwater.The __4__ of the earth's surface is constantly being dissolved (溶解) and is passing into the ocean.
But we do not know whether this can __5__ the huge quantity of salt in oceans，if all the oceans were dried up，enough salt would be left to build a __6__ 180 miles high and a mile thick.Such a wall would reach once around the world at the Equator!
The __7__
salt that we all use is produced from seawater or the water of salt lakes，from salt springs and from
__8__ of rock salt.The concentration of salt in seawater __9__ from about three percent to threeandonehalf percent.The Dead Sea，which covers an area of about 340 square miles，__10__ about 11,600,000,000 tons of salt!
On the average，a gallon of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all __11__ formed by the evaporation (蒸发) of seawater millions of years ago.It is believed that the thick rocksalt deposits were __12__ after about ninetenth of the volume of seawater had been evaporated.
Most Commercial salt is obtained from rock salt.The usual __13__ is to drill wells down to the salt beds.Pure water is pumped down through a __14__.The water dissolves the salt and it is forced through another pipe up to the __15__.
【语篇导读】 本文主要是讲盐是从哪里来的。
1．A.strange B．special
C．terrible D．awkward
解析 由no answer可知，应当是使我们感到“奇怪”。
答案 A
2．A.statement B．scene
C．remark D．fact
解析 由前文句中的fact可知选fact，才会上下句衔接。句意是“海洋中有盐就是这样一个事实”。原词复现。
答案 D
3．A.truly B．properly
C．simply D．absolutely
解析 由上文的语气和常识可知，盐到达海洋里应当是有原因的，“只是”我们不知道而已。
答案 C
4．A.salt B．water
C．rock D．soil
解析 由前句“盐是可溶于水的”可知，这里是指地表的“盐”被不断溶解，流入大海。原词复现。
答案 A
5．A.measure B．explain
C．confirm D．convince
解析 指第二段所述情况能否“解释”第一段最后一句所提出的疑问。
答案 B
6．A.bridge B．wall
C．fence D．railway
解析 由下句的Such a wall可知。原词复现，使上下句衔接紧密。
答案 B
7．A.common B．advanced
C．unusual D．accurate
解析 由that we all use可知，是指“普通的，常见的”盐。
答案 A
8．A.mixtures B．outputs
C．collections D．deposits
解析 由下段中的the thick rocksalt deposits可知，是指岩盐的“沉积物”。原词复现。
答案 D
9．A.trembles B．swings
C．ranges D．transforms
解析 与from...to...连用，表示变化范围，用range。
答案 C
10．A.includes B．contains
C．squeezes D．consumes
解析 指一种东西中“包含”有另外不同的东西(have sth within itself)，要用contain。与下句中的contain是原词复现。
答案 B
11．A.actually B．gradually
C．occasionally D．originally
解析 由millions of years ago可知，岩盐层“最初，原本”就是由几百万年前由海水蒸发而形成的。
答案 D
12．A.increased B．introduced
C．formed D．transferred
解析 前句是讲岩盐层形成的时间，本句是讲“形成”的条件，即在什么情况下形成的。
答案 C
13．A.treatment B．problem
C．method D．reaction
解析 前句讲“大多数商业盐是由岩盐而获得”，再根据本句作表语的不定式“钻井到盐床”应是获得盐的通常的“方法”。
答案 C
14．A.pipe B．crack
C．hole D．cable
解析 由下文的through another pipe可知，此处是指纯净的水通过“管道”输送到下面。
答案 A
15．A.rooftop B．ceiling
C．globe D．surface
解析 句意：水溶解盐，然后又通过另外一条管道将它抽到地表上来。
答案 D
Cloze 2
Britain has a large circulation (发行量) of the national newspapers.The Daily Mirror and The Daily Express both __1__ about 4 million copies each day.On average，every __2__
will buy one newspaper in the morning，and take two or three on Sundays.
Local newspapers are just as popular as the __3__ ones in Britain.Local papers have a weekly circulation of 13 million.Nearly every town and country area has its own paper，and almost every local paper is __4__ holding its own.Many local newspapers are earning good profits.
Local newspapers have their special __5__.They mainly satisfy interest in local __6__ births，weddings，deaths，council meetings，and sports.Editors often rely on a small staff of people who know the __7__ well.Clubs and churches in the neighborhood regularly __8__ these papers with much local news.Local news does not get out of __9__ as quickly as national news.If there is no __10__ for it in this week's edition，a news item can be held over until the following week.
The editor of a local newspaper never forgets that the success of any newspaper depends on
__11__.For this reason，he is keen to keep the good will of local businessmen.If the newspaper sells well with carefully chosen news items to attract local readers，the businessmen will be grateful to the paper for the opportunity of keeping their __12__
in the public eye.
Local newspapers __13__ comment on problems of national importance，and editors rarely take sides on political questions.But they can often provide service to the community in __14__ public feeling on local issues.A newspaper can sometimes persuade the council to take action to improve transport，provide better shopping facilities，and __15__ local monuments and places of interest.
【语篇导读】 本文主要介绍了英国地方报纸的特色。
1．A.sell B．distribute
C．take D．produce
解析 由前文的circulation和后文的buy可知，这两种报每天都要“卖”四百万份。sell与buy是词语同现。
答案 A
2．A.company B．family
C．person D．school
解析 根据常识，公司和学校周末是休息，而后面说星期天买两三份，比平时还买得多，与情理不符；若是每个人每天早上买一份报纸就更不合常理了，婴儿不会买吧？故选B更好。
答案 B
3．A.national B．morning
C．evening D．weekly
解析 因前段是谈“国家性报纸”，本段是讲“地方性报纸”，可见，此句的意思是，地方报纸与国家报纸一样受欢迎。national是原词复现。
答案 A
4．A.technically B．personally
C．financially D．eventually
解析 由后句are earning good profits可知，指“经济上”还保持得住，不衰退。
答案 C
5．A.talents B．functions
C．circumstances D．characteristics
解析 由下句地方报纸有他们自己的“特色”。
答案 D
6．A.festivals B．events
C．customs D．celebrations
解析 破折号后面是具体内容，能包括这些内容的只有events(活动，事件，赛事)。events与births，deaths，sports等是上下义重现。
答案 B
7．A.message B．circulation
C．information D．district
解析 由前句可知，要刊登地方上的活动赛事等，报社工作人员应当对这个“地方，行政区”很熟悉。
答案 D
8．A.supply B．equip
C．acquaint D．offer
解析 指俱乐部和教堂定期给地方报纸“提供”本地资讯。offer虽有“提供”之意，但通常是跟双宾语，不用介词with。
答案 A
9．A.place B．range
C．date D．question
解析 由as quickly as可知，这里是指“过时”，故用date。
答案 C
10．A.doubt B．evidence
C．room D．sense
解析 由“被延搁到下周(be held over until the following week)”可知，这周是没有版面，故选room(＝space余地)。
答案 C
11．A.managing B．advertising
C．editing D．planning
解析 由常识和下文“博得商人的好感(keep the good will of local businessmen)”可推知，任何报纸的成功都依赖“广告”。advertising与businessmen是词语同现。
答案 B
12．A.factories B．reputations
C．images D．products
解析 商人感谢报纸，应当是报纸提供了机会，让公众了解他们的“产品”。products与businessmen，advertising是词语同现。
答案 D
13．A.ever B．never
C．often D．seldom
解析 由下句开头的but可知，应选与often意义相反意义的词，再由rarely(＝not often)提醒，故选seldom(＝not often)。seldom与rarely是同义词复现，与often是反义词同现。
答案 D
14．A.improving B．expressing
C．increasing D．observing
解析 由动宾搭配可知，应是对当地事务“表达”感情或意见。
答案 B
15．A.preserve B．visit
C．rebuilt D．guarantee
解析 由语境和动宾搭配可知，对“当地的文物和名胜古迹(local monuments and places of interest)”应当是“保护”。
答案 A
Cloze 3
Some people seem to have special skills for learning languages.They can pick up new vocabulary，master rules or __1__，and learn to write in the new language more quickly than others.They do not seem to be any more __2__ than others，so what makes language learning so much easier for them?
First of all，successful language learners are __3__ learners.They do not depend on the book or the teacher.Instead of waiting for the teacher to __4__，they try to find the patterns and the rules for themselves.They are good __5__ who look for clues and form their own conclusions.When they guess wrong，they guess again.They try to learn from __6__.
Successful language learning is active learning.Therefore，successful learners do not wait for a chance to __7__ the language，they look for such a chance.They find people who speak the language and they ask these people to __8__ them when they make a mistake.They will try anything to communicate.They are not afraid to
__9__
what they hear or to say strange things; they are willing to make mistakes and try again.It is more important for them to learn to think in the language than to know the meaning of every word.
Finally，successful language learners are learners with a __10__.They want to learn the language because they are interested in the language and the people who speak it.It is __11__ for them to learn the language in order to communicate with these people and to learn from them.They find it easy to practice using the language __12__ because they want to learn with it.
If you are a successful language learner，you have probably been learning independently，__13__，and purposefully.On the other hand，if your language learning has been less than __14__，you might as well try some of the __15__
outlined above.
【语篇导读】 本文介绍了优异的语言学习者的三种技巧：独立、积极、有目的。
1．A.grammar B．usages
C．patterns D．pronunciation
解析 由前面的vocabulary(词汇)的提示，又由带有解释性的or可知，答案应与rules意思相近，故选grammar(语法)。因语法就是遣词造句的规则，所以由“规则”可想到“语法”。rules与grammar是近义词复现。
答案 A
2．A.creative B．intelligent
C．ambitious D．impatient
解析 由常识可知，句意应为：他们似乎并不比别人“聪明”，那么到底是什么让他们觉得语言学习这样容易呢？
答案 B
3．A.independent B．humorous
C．courageous D．diligent
解析 由后面一句中的do not depend on可知，这是反义词复现，因为是用反义词表达同样一个意思。最后一段的总结中，independently是最准确的印证，该词与independent是同根词复现。
答案 A
4．A.praise B．instruct
C．explain D．advise
解析 由后面“他们试图自己找出句式和规则”可知，他们不会“等老师来解释”。
答案 C
5．A.students B．learners
C．teachers D．guessers
解析 从其后的定语从句“寻找线索”可知是在“猜测”，结合后面的guess wrong和guess again可确认，选guessers(猜测者，推测者)。guesser与guess是同根词复现。
答案 D
6．A.clues B．guesses
C．books D．mistakes
解析 从前句When they guess wrong，they guess again可知，选D。wrong与mistakes近义词复现。
答案 D
7．A.learn B．master
C．understand D．use
解析 从后面几句，特别是communicate，repeat，hear or to say，to think in the language等字眼可知，此处是指主动找机会“运用”这门语言。use与communicate，hear，say等是上下义复现。
答案 D
8．A.guide B．teach
C．help D．correct
解析 由后面的when they make a mistake可知，应选D。因为“犯错(make a mistake)”与“改错(correct mistakes)”是词语同现。
答案 D
9．A.complain B．repeat
C．face D．ignore
解析 由后面的try again可知，是“重说(repeat)”一遍。
答案 B
10．A.purpose B．desire
C．schedule D．perseverance
解析 由后面的in order to，特别是最后一段中的purposefully可知，选A。
答案 A
11．A.difficult B．important
C．necessary D．essential
解析 从前句“他们想学这门语言，是因为他们对这门语言和说这种语言的人感兴趣”，可见，“他们为了要同这些人交流，就‘必须(necessary)’要学会这门语言”。
答案 C
12．A.partly B．particularly
C．regularly D．effectively
解析 因为“他们想在伴随着使用这门语言的过程中学会这门语言”，所以“他们会‘经常’练习使用这门语言”。
答案 C
13．A.sincerely B．actively
C．selflessly D．absolutely
解析 此句是对前面第二、三、四这三段所述方法的总结，此空对应的是第三段Successful language learning is active learning的，actively与active是同根词复现。
答案 B
14．A.hopeful B．powerful
C．successful D．tactful
解析 此句与If you are a successful language learner相对应，可见应选successful。
答案 C
15．A.techniques B．languages
C．conclusions D．occasions
解析 指上文中的learning independently，actively，and purposefully这三种技巧和方法。与第一段第一句中的skills是同义复现。
答案 A
Cloze 4
The oldest stone buildings in the world are the pyramids.They have __1__ for nearly 5,000 years，and it seems likely that they will continue to stand for thousands of years yet.There are over eighty of them __2__
along the banks of the Nile，some of which are different in __3__ from the true pyramids.The most famous of these are the “Step” pyramid and the “Bent” pyramid.
Some of the pyramids still look much the same as they must have done when they were built thousands of years ago.Most of the __4__ suffered by the others has been at the hands of men who were looking for treasure or，more often，for stone to use in modern buildings.The dry climate of Egypt has helped to __5__ the pyramids，and their very shape has made them less likely to fall into ruin.These are good reasons why they can still be seen today，but perhaps the most important is that they were __6__ to last for ever.
It is __7__ certain that plans were made for the building of the pyramids because the plans of other large works have __8__ been preserved.However，there are no __9__
or pictures to show us how the Egyptians planned or built the pyramids themselves.Consequently，we are only able to __10__ at the methods used.However，by examining the actual pyramids and various tools which have been found，archaeologists have __11__ a fairly clear picture of them.
One thing is certain: there must have been months of
__12__
planning before they could begin to build.The first thing they had to do was to choose a
__13__ place.You may think this would have been __14__ with miles and miles of empty desert around，but a pyramid could not be built just anywhere.Certain rules had to be
__15__，and certain problems had to be overcome.
【语篇导读】 本文主要讲金字塔的建造。
1．A.produced B．appeared
C．piled D．stood
解析 由后面的they will continue to stand for thousands of years可知，选stood。
答案 D
2．A.accumulated B．abandoned
C．scattered D．accompanied
解析 金字塔应是“分布，分散”在尼罗河两岸。
答案 C
3．A.height B．shape
C．size D．width
解析 从下句(the“Bent” pyramid)和下段的描述(特别是look much the same as)可知，是指在外表“形状”上与几千年前的真实的金字塔不同了。
答案 B
4．A.damage B．pain
C．failure D．loss
解析 从空格后面的内容“由人类造成的，这些人寻宝藏或找石头来搞现代建筑”，可知是给金字塔造成“损害(damage)”。
答案 A
5．A.preserve B．ruin
C．rescue D．defend
解析 根据These are good reasons why they can still be seen today可知，埃及的气候有助于将金字塔“保存”下来。
答案 A
6．A.protected B．foreseen
C．constructed D．planned
解析 由下段开头句可知，选planned。
答案 D
7．A.gradually B．practically
C．eventually D．finally
解析 由because引导的原因状语从句来推测，“几乎”可以肯定，金字塔的建筑会有“设计图”。
答案 B
8．A.actually B．fluently
C．totally D．fortunately
解析 其他大工程的设计图能够保存下来，当然是“幸运的”。
答案 D
9．A.films B．paintings
C．writings D．newspapers
解析 由or pictures(图片)可知，选“文字”。句意：并没有文献资料或图片显示埃及人是如何设计和建造金字塔的。
答案 C
10．A.guess B．work
C．aim D．explore
解析 由前句没有文字和图片显示如何设计和建造，其结果，建造时所采用的方法，我们就只能是“猜测”了。
答案 A
11．A.drawn B．found
C．formed D．bought
解析 虽然没有文字图片，但通过考查现实的金字塔和所发现的工具，考古学家已“形成(formed)”了相当清晰的图片了。
答案 C
12．A.impressive B．careful
C．super D．fundamental
解析 根据语境可知，在开始建造之前，应做了“精心的”规划。
答案 B
13．A.interesting B．beautiful
C．remote D．suitable
解析 根据常识，应是选择“适当的”地点。
答案 D
14．A.disturbing B．depressing
C．easy D．difficult
解析 由表示转折的后一分句“但是金字塔不能任意修建在别的地方”，可知你也许会认为在广阔的沙漠中选一个地方是一件“容易”的事。
答案 C
15．A.made B．followed
C．broken D．established
解析 表示“遵循规则”是follow the rules。
答案 B
Cloze 5
Are some people born clever，and others born stupid？Or is intelligence developed by our __1__ and our experience？Strangely enough，the answer to these questions is yes.To some extent our intelligence is given to us at birth，and no amount of education can make a genius out of a child born with __2__ intelligence.On the other hand，a child who lives in a __3__ environment will develop his intelligence less than one who lives in rich and varied __4__.Thus the __5__ of a person's intelligence are fixed at birth，whether or not he reaches those limits will depend on his environment.This view，now held by most experts，can be
__6__
in a number of ways.
It is easy to show that intelligence is to some extent something we are born with.The closer the __7__
relationship between two people，the closer they are likely to be intelligent.Thus if we take two unrelated people at random from population，it is likely that their degree of intelligence will be completely __8__.If，on the other hand，we take two identical twins，they will very likely to be as
__9__ as each other.Relations like brothers and sisters，parents and children，usually have similar intelligence，and this __10__
suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments.We might send one，for example，to a university and the other to a __11__ where the work is boring.We would soon find differences in intelligence __12__，and this indicates that environment as well as
__13__ plays a part.This __14__ is also suggested by the fact that people who live in close contact with each other，but who are not related at all are likely to have __15__
degree of intelligence.
【语篇导读】 本文为议论文，第一段提出论点：一个人的智力程度是生来就确定好的，但能达到什么程度就由后天的环境所决定了；第二段论证智力取决于先天；第三段论证环境对人的智力开发的影响，并得出结论：环境与出生对人的智力都起作用。
1．A.education B．environment
C．university D．relationship
解析 下文就是谈环境对智力开发的影响，如a child who lives in a boring environment will develop his intelligence...词语复现。
答案 B
2．A.musical B．social
C．high D．low
解析 与a genius相对，应是a child born with low intelligence。
答案 D
3．A.boring B．exciting
C．worsening D．changing
解析 与rich and varied相对应是boring，反义同现。
答案 A
4．A.communities B．villages
C．surroundings D．countries
解析 比较对象应是同类事物，与environment相对应的应是surroundings，同义词复现。
答案 C
5．A.measure B．limits
C．degree D．development
解析 由后文的those limits可知，这是指“一个人的智力的限度或范围”，故选B。原词复现；与下文中的their degree of intelligence的degree是同义复现。
答案 B
6．A.decided B．obtained
C．found D．Supported
解析 逻辑搭配上看，观点(view)应是得到“支持”。
答案 D
7．A.blood B．friend
C．brother D．relative
解析 由上文的a person's intelligence are fixed at birth，生活常识，以及下句与之相对的unrelated people可知，“血缘”关系越近的两个人智力水平也越接近。blood与unrelated反义同现。
答案 A
8．A.different B．close
C．irrelevant D．invisible
解析 由上文的条件句中“从茫茫人海中随意找两个不相关的人”可知，这两个人的智力程度是完全“不同的”。与上文的closer是反义词同现。
答案 A
9．A.stubborn B．reliable
C．intelligent D．diligent
解析 因上下句或上下文谈的都是智力，所以这里是指双胞胎的“智力”很可能是相同的。
答案 C
10．A.helpfully B．entirely
C．clearly D．strongly
解析 前半句所述事实已“清楚地”表明，智力程度是由先天所决定的。
答案 C
11．A.school B．factory
C．village D．country
解析 由where the work is boring可知，选B。
答案 B
12．A.gathering B．producing
C．testing D．developing
解析 由第一段中的is intelligence developed和develop his intelligence可知，这里是指将双胞胎放在不同环境下其智力“开发”是不相同的。同词复现，或搭配(开发智力)。
答案 D
13．A.work B．custom
C．birth D．education
解析 前文所述的出生相同的双胞胎在不同环境下，智力开发也不相同，说明“环境”与“出生”对人的智力都起作用。
答案 C
14．A.conclusion B．statement
C．judgment D．condition
解析 指前句“环境与出生对人的智力都起作用”这个“结论”。
答案 A
15．A.different B．similar
C．meaningful D．considerable
解析 句意：这一结论也可用以下事实来说明：相互密切接触(环境相同)但毫无关联的人(出生不同)也会有相似的智力程度。
答案 B