stylist2017年12月英语四级真题答案及解析(卷二)

2021年1月9日发(作者：周萌萌)
2017 年 12 月大学英语四级考试真题答案与详解（第 2 套）
Part I Writing
审题思路：
此次话题师生关系贴近学生生活，因此写起来并不难。简单开篇 之后，考生应该将重点放在
第二段，给出处理
好师生关系的一些建议。当然，这个话题还可以 从不同的角度入手，比如老师应该如何做，
或者师生共同努力，等
等。考生应结合自己的实际 情况，从自己最擅长的角度写，这样容易做到言之有物。本文仅
从学生角度给出了三条
处理好师生关系的建议。
高分范文：
Teacher-student Relationship Is Never Complex
The relationship between teachers and students has been hotly discussed in recent years
in China for more and more
attention has been paid to education. Today I would like to share some tips on how to get
along well with teachers from
students’ perspective. First and foremost, leave a good first impression on your teacher.
As the saying goes, well begun is half done. A good
first impression is important for teachers to remember your name among your fellow
students. Secondly, study hard and be
active in class. A student who loves study can definitely impress teachers deeply. Finally,
keep contact with your teacher
conclude, teacher-student relationship is never complex if you could have an
excellent academic performance, be
cooperative in class or make friends with your teacher. 全文翻译：
师生关系并不复杂
由于人们对教育越来越关注，师生关系近几年来中国引起热议。今天，我想从学生角度分享
几条关于如何 与老
师和睦相处的建议。
首先，给老师留下良好的第一印象。常言道：良好的开端是成功的 一半。良好的第一印象对
于让老师从你的众
多同学中记住你非常重要。第二，努力学习，在课 堂上积极表现。一个热爱学习的学生一定
会让老师印象深刻。最
后，课下经常与老师沟通，这样你们就会成为朋友。
总结而言，如果你学业表现良好、课上积 极配合或与老师成为朋友，那么师生关系就绝对不
会复杂。
Part II Listening Comprehension
Section A
News Report One
A New Jersey black bear that walks upright on its two back legs and has become a social
media darling has re-emerged
and has been captured on video months after its last sighting. The bear named Pedals
was spotted in the town of Oak Ridge. In a video posted to Facebook featuring the bear, it
appeared to be in relatively good health and was moving quickly. (1)Pedals apparently
has an injured leg or paw that doesn’t allow it to walk comfortably on all fours according to
experts. Lawrence Hajna, spokesman for the state Department of Environmental
Protection, said officials expect the bear to make it
through next winter. (2)The bear first gained fame after it was spotted wandering around
neighborhoods and was caught on
videos that were posted on social media and shown on national television. Last year,
supporters pushed for Pedals to be
moved to a shelter, but New Jersey officials have said they won’t allow the bear to be
captured and transferred to the facility
“The bear would do better in its natural habitat and the agency would step in if its condition
deteriorated,” they said. Questions 1 and 2 are based on the news report you have just
heard. 未听先知：预览两道题各选项，主语多为 It，结合第 1 题选项中出现的 its audience、
catch people’s attention 和 limbs
可知，It 指某个动物，因此本篇新闻内容与动物有关；再结合第 2 题选项中出现的 spotted、
television、videos 和 social
media 等词可知，该动物因某种原因引起了媒体关注。
is the probable reason the bear walks upright on its back legs?
答案：D
详解：新闻中提到，根据专家的说法，Pedals 明显有一条腿或者爪子受伤，这导致它无法
舒服地四肢着地行走，
因此答案为 D。

is the bear first known to the public?
答案：C
详解：新闻中提到，这头熊首次出名是因为它在居民区附近闲逛被人发现并且拍了视 频上传
到社交网站上，又在
国家电视台播出。因此答案为 C。
News Report Two
It’s not your imagination. Traffic in the US is actually getting worse. (3)Americans drove
more miles last year than any
other year on record. The US Department of Transportation says Americans drove nearly
3,150 billion miles last year. That’s about the same distance as 337 round trips from Earth
to Pluto. The previous record was 3,003 billion miles in 2007, before the economic
recession and high gas prices. The traffic increase comes at the same time as gas prices
drop
significantly. The current average gas price in the US is $$1.71 per gallon. A year ago it
was $$2.31 per gallon and was often
much higher in recent years. (4)A transportation expert told the reporter that job growth
likely plays a part as well, along
with some people driving longer distances to and from work. And so all this means more
traffic jams on the road. The Texas
A&M Travel Institute found that rush-hour travelers spent an extra 42 hours on the road
last year because of travel delays. Now, that is depressing. Questions 3 and 4 are based
on the news report you have just heard. 未听先知：预览两道题各选项，由选项中出现的
distance travelled、road accidents、gas、consumption 和 traffic 等词
可知，本篇新闻与交通有关，可能涉及行车里程、交通状况和耗油量等方面。
new record did the American drivers set last year?
答案：A
详解：新闻开头部分提到，美国人去年的行车里程比以往有记录的任何一年都要多。因此答
案为 A。
is depressing according to the speaker?
答案：D
详解：新闻中提到，一位交通专家告诉记者说，工作数量的增长加上人们通勤距离的 加长意
味着路上会有更多的
拥堵，德克萨斯州的 A&M 交通协会发现，去年高峰时期由于交通延误，人们在路上要多
花 42 个小时的时间，而
这令人很沮丧，因此答案为 D。
News Report Three
（5）A 16-year-old asked a stranger at a grocery store to buy him and his mother some
food in exchange for carrying
man’s groceries to his car. What happened next will pull at your heartstrings. (6)A
wonderful bond formed between the two, and within a couple of weeks, the stranger,
named White, helped raise $$190,000 on a website to support the Memphis
teenager and his disabled mother. “When Chauncy approached me, it just pulled at my
heart,” White said. “Here comes
Chauncy, just trying to get food for him and his mom off the grace of other people. When I
looked at him and saw what he
was doing and what he was asking for, I said he was my hero.” (7) “Chauncy is a top
student who is doing his best to make
it in a world with no money and very few resources,” White explained on the crowd funding
site. He wants to work and help
his mother financially. “It’s so rare that we get an opportunity to affect so much change on
one life,” White wrote. “I cannot
thank you enough for caring about Chauncy. This is his big chance, and you’re making it
possible.” Questions 5 and 7 are based on the news report you have just heard. 未听先知：
预览三道题各选项，主语均为 He，由此可知，本篇新闻与某位男士有关。结合第 5 题选
项语意以及反
复出现的 stranger 可知，此题考查某男士所做的与一个陌生人有关的行为动作；第 6 题
选项中反复出现了 him，而
且通过语义可知 him 与主语 He 为不同的两个人，故此题考查其中一位男士为另一位男士
做了什么；第 7 题各选项
均是对某男士的描述，故此题考查有关此男士的细节信息。
did teenager Chauncy do at the grocery store to get some food?
答案：B
详解：新闻开头提到，一个 16 岁的孩子在一家杂货店里请求一个陌生人给他和他的妈妈
买一些食物，而作为交换，
他会把这个陌生人的东西从杂货店搬运到他的车里。因此答案为 B。
did the stranger do for Chauncy?
答案：C
详解：新闻中提到，两个人之间产生了奇妙的联系，而且在几个星期的时间里，这个名为
White 的陌生人在一个
网站上筹集了 19 万美元钱款用来帮助这个孟菲斯市的少年和他的残疾母亲。因此答案为
C。

do we learn about Chauncy?
答案：B
详解：新闻中提到 White 在众筹网站上写道：“Chauncy 是一个优等生，他一直尽自己最
大的努力在美元钱和几乎
美元资源的情况下取得成功。”因此答案为 B。
Section B
Conversation One
M:(8)That was my last economics lecture of the week. And here is the weekend again.
W:What are you up to tonight? I was just wondering if we could try out the new restaurant
on Charles Street, then go on to
Queen Victoria for a drink. M:Sorry, (9)I am heading home this weekend for my brother’s
18th birthday. W:Oh, that’s great. M:All my relatives are gonna be there, as well as my
brother’s horrible friends of course. (10) Listen, why don’t you come
along? Mom would be absolutely delighted to see you again. She is always asking after
you. W:Yes, I’d love to see her too. M:So please, do come. It would be great. Besides,
with Jonathan’s wild game to contain with, I would really welcome an
ally. W:That sounds tempting. But I won’t be ready till 5:00, as I’ve got my statistics
seminar now. What time are you heading
off?
M:Well, I was going to leave right away. However, I can hang around for you if you like. It
just means that I’ll need to
change my ticket. W:But would that be too much trouble for you?
M:No, not at all. (11-1)I’ll go to the station first, and see if I can get tickets for us on the
6:30 train. Then, you can drive me
there. I’ll text you when it’s done. W:Brilliant. Are you absolutely positive it’s okay? I
wouldn’t want to impose. M:Don’t worry. You are most welcome to join our party. And as I
always say, the more, the merrier. W:Look, I’d better go, or I’ll be late. (11-2)So I’ll meet
you down at the station around 6:00?
M:Fine, see you later. Questions 8 and 11 are based on the news report you have just
heard. 未听先知：预览四道题各选项，第 8 题、第 9 题和第 10 题各选项均为动词短语，
因此这三题考查某人的行为动作。
其中，第 8 题各选项均为过去完成时动词，因此考查某人已经发生的行为动作；第 9 题
和第 10 题各选项均为现在
时，且多次出现 his，因此可大胆推测，这两题考查男士现在或将来的行为动作；第 11 题
各选项均与交通工具有关，
因此考查某人的出行方式。
has the man just done?
答案：A
详解：对话开头，男士说刚才是他本周最后一次经 济学讲座。可知男士刚刚参加过一场经济
学讲座，答案为 A。
is the man going to do this weekend?
答案：C
详解：对话中，男士拒绝了女士的提议，说这周末是他弟弟的 18 岁生日，因此要回家，
故答案为 C。
does the man ask the woman to do?
答案：D
详解：对话中，男士问女士要不要一起来（参加他弟弟 的生日宴会），并且说自己的母亲见
到她一定会很开心。
因此答案为 D。
would they go to the man’s home?
答案：B
详解：对话中，男士在邀请到女士去自己家之后说，要先去车站看看能否买到 6 点半的火
车票。对话最后女士征
求男士的意见 6 点左右在车站会合，男士表示同意，因此答案为 B。
Conversation Two
M:Hi, Jane. How is everything going?
W:So far so good. I’ve just finished my last exam.

M:Good, the term is coming to an end. (12)Do you think we should take a holiday
overseas to relax and have fun? (13)I’ve
saved my tips for my waiter job these past few months and I should have enough by July.
W:Yes, that’s a wonderful idea. (14)I’ve got a little put-aside for a rainy day, but I might
need to earn a little more before we
go. By the way, what’s it like working in a restaurant?
M:Well, it’s really tough, as working a ten-hour shift is like hell. I am not sure if it’ll suit you,
but it’s pretty cool if your
bosses are right. Do you think we should invite some others to come along?
W:Yes. We could ask Tom and Tracy if they are interested. I haven’t been abroad for a
long while. And it would be great to
go somewhere by the sea. I can’t wait. (15)And, if Tom goes, we could go sailing. He has
a lot of experience with boats. And it’ll work out a lot cheaper to hire one if there’s more of
us to share the cost. M:So, that’s a plan. We will save as much as we can and go sailing
next July. Let’s say Spain, or anywhere cheap we’ll find. W:OK. But, first we’d better
contact Tom and Tracy and see if they are up for it. If not, it will be better to join board.
Questions 12 and 15 are based on the news report you have just heard. 未听先知：预览
四道题各选项，由选项中的 exam、courses 和 term paper 可知，对话与学生有关；再根
据选项中的
vacation abroad、money、Working part time 和 sailing 等词可推测，对话内容涉及出国
度假、挣钱、兼职工作等方面
内容。其中，第 15 题各选项主语均为 He，考查某男士的细节信息。
does the man think of doing?
答案：A
详解：对话中，男士提到学期要结束了，问女士是否认为他们应该去 国外度假、休息放松一
下。因此答案为 A。
has the man been doing for the past few months?
答案：C
详解：对话中男士提到，在过去的几个月里他已经攒下了做服务生挣得的小费。因此答案为
C。
does the woman say she needs to do before departure?
答案：B
详解：对话中，女士提到自己有一点储蓄以 备不时之需，但在出发前可能还需要多挣一些。
因此答案为 B。
does the woman want to invite Tom?
答案：A
详解：对话中，男士问女士是否应该再叫几个人一起去，女士回答说可以问问 Tom 和 Tracy，
并且提到如果 Tom
去，他们就可以进行帆船运动，Tom 有很多船上的经验。因此答案为 A。
Section C
Passage One
Most people know Marie Curie was the first woman to win the Nobel Prize, and the first
person to win it twice. (16)However, few people know that she was also the mother of a
Nobel Prize winner. Irene Curie was born on September 12,1987. At the age of 10, Irene’s
talents and interest in mathematics were apparent. Irene entered Sevigne University in
October,1914, to prepare for her degree in mathematics and physics. When World War I
began, she left Sevigne University to help her mother, who was using X-ray facilities to
help save the lives of wounded
soldiers. (17)Irene continued this work by developing X-ray facilities for military in France
and Belgium. After the war she
received a Military Medal for her work. In 1918, Irene became her mother’s assistant at
the Curie Institute. In December
1924, Frederic Joliot visited the Institute where he met Marie Curie. Frederic became one
of her assistants and Irene taught
him the techniques required to work with radioactivity. Irene and Frederic soon fell in love
and got married on October
29,1926. Their daughter was born in 1927 and their son in 1932. Like her mother, Irene
combined family with career. Like her mother, Irene was awarded a Nobel Prize, along
with her
husband, Frederic, in 1935, for producing new radioactive elements. (18)Unfortunately,
also like her mother, she developed
blood cancer because of her exposure to radiation. Irene Joliot-Curie died on
March17,1956. Questions 16 and 18 are based on the news report you have just heard.
未听先知：预览三道题各选项，由选项中出现的 won、Nobel Prize 和 winner 可知，本篇
短文与诺贝尔奖获得者有关。
第 16 题和第 17 题各选项主语均为 She，可推测该诺贝尔奖获得者为女性；再结合语义
可推测，第 16 题考查该女性
的经历或成就，第 17 题考查该女性的贡献或所做的有助益的事情，第 18 题则考查该女
性与另一人物的共同特点。

does the speaker say about Marie Curie’s daughter?
答案：D
详解：短文开头提到，大多数人都知道 Marie Curie 是第一位获得诺贝尔奖的女性，也是
第一个获得两次诺贝尔奖
的人，然而很少有人知道她也是一位诺贝尔奖得主的母亲。下文接着对 Marie Curie 的女
儿 Irene 进行了介绍，因此
答案为 D。
what was Irene Curie awarded a Military Medal?
答案：B
详解：短文中提到，一战爆发后，Irene Curie 离开了大学，帮母亲用 X 射线设备拯救受
伤士兵的生命。Irene Curie
继续这项工作，为法国和比利时的军事医院研发 X 射线设备。战争结束后，她获得一枚军
功章，作为对她的工作的
肯定。因此答案为 B。
what way were Marie and Irene similar?
答案：A
详解：短文最后提到，不幸的是，Irene 和她的母亲 Marie 一样，由于暴露在辐射中而得
了血癌，Irene 与 1956 年 3
月 17 日去世。因此答案为 A。
Passage Two
Have you ever heard of the Vikings? They were sea travelers from Norway. More than a
thousand years ago, they made
three important geographical discoveries. (19)The Vikings’ first major discovery occurred
in the ninth century. A man called Naddod was on his way from
Norway to the Faroe Islands, north of England, when his ship was caught in a storm. The
storm blew the ship west for
several days. When the weather cleared, Naddod found himself on the coast of a new
land. Later, Viking travelers named it
Iceland. In 982, a Viking called Eric the Red sailed west in search of new land. (20)Five
hundred miles west of Iceland, he and
his men reached an icy rocky mass of land. They sailed around it until they reached the
western side. Here, they found some
green areas, so they named the island Greenland. Then, in 1001, the Vikings made their
most important discovery. The son of Eric the Red, named Leif Ericson, had
heard rumors about land west of Greenland. He sailed west and soon found it. He and his
men landed in three places. They
called the first one Helluland, which means land of flat stones. The Vikings then sailed
south and made their second landing. They named this place Markland. The third landing
was at a place they called Vinland. Leif Ericson and his men were the
first Europeans to walk on the shores of North America, almost 500 years earlier than
Columbus. Questions 19 and 21 are based on the news report you have just heard. 未听
先知：预览三道题各选项，由选项中出现的 first settlers、Europe、conquerors、the ninth
century 以及反复出现的
the Vikings 可知，短文内容与早期维京人的领土扩张有关。第 19 题各选项的主语 They
很有可能就是指维京人，此
题考查有关维京人的细节描述；第 20 题各选项主语均为 It，结合语义可推测，本题可能
考查某地的方位或者特征；
第 21 题各选项均为名词短语且均比较有概括性，可能考查短文主旨。
do we learn about the Vikings?
答案：C
详解：短文中提到，维京人的第一个重大发现发生在 9 世纪。一个名叫 Naddod 的人要
从挪威到英格兰北部的法罗
群岛（Faroe Islands），但他的船遇到了暴 风雨，被吹向了西方并行驶了几天，等天气晴朗
之后，他们发现自己到
了一片新陆地，之后维京人将其命名为 Iceland。因此答案为 C。
does the passage say about Greenland?
答案：D
详解：短文中提到，Eric the Red 和他的船员们在 Iceland 以西 500 里发现了一块结满了
冰且到处都是岩石的陆地，
他们绕着这块陆地航行抵达了它的西面，在这里他们发现了一些绿地，因此将它命名为
Greenland。因此答案为 D。
does the speaker mainly talk about?
答案：A
详解：短文从简单介绍维京人开始，引出 了他们的三大重要地理发现，全篇以这三大发现展
开描述。从短文中不
难得出，维京人的三大 发现均与海洋、航行和发现新陆地有关，因此可以概括为海洋探索，
答案为 A。
Passage Three
Where do you think you will be in ten years? It’s difficult to know exactly where you will be
and what you will be

doing. (22)But everyone dreams about the future. You might imagine the job you will get
when you finish school. You may
daydream about meeting your life partner or live in a big house by the sea. In my dreams,
I would have twins, a boy and a girl. We would live in a large two-story house with floors
and the
staircase made of wood. Now, at the age of 46, I look back on those dreams and smile.
Things haven’t turned out exactly as
I imagined. (23)But I wouldn’t change what I have now for that imaginary world. (24)In
college, I studied international
business, and planned to enter a law school. In my third year of university, I realized that I
didn’t want to become a lawyer. I
chose to become a language teacher. I did get married, but had more than two children.
We had five. Do I live in the dream
house with wooden floors? No, I don’t. But I love my home and I wouldn’t want to live in
any other place. I believe that as a young person, it’s important to dream and make plans.
However, it’s also important to realize that not
all of your plans will turn out exactly as you wish. (25)One of the biggest lessons I have
learned in life is this: Be happy
with what you have. Questions 22 and 25 are based on the news report you have just
heard. 未听先知：预览四道题各宣泄下，第 22 题四个选项均为对一般行为的描述，考查
某人的行为动作；由第 23 题选项
中反复出现的 his 和 he 可推测，本篇短文与某位男士有关，应注意与男士相关的动作描
述；第 24 题各选项均为名
词短语，听音时注意提及选项关键词的细节描述；第 25 题多为哲理行描述，可能考查启
发类的题目，应多注意短
文结尾的总结性语言。
does the speaker think everyone tends to do?
答案：C
详解：短文开头部分，讲话者明确提到每个人都会梦想将来，因此答案为 C。
does the speaker say he would refuse to do?
答案：B
详解：短文中，讲话者提到了自己对将来的梦想，也提到现实与梦想有所差别，但是 讲话者
明确说自己不会拿现
在所拥有的一切去换取以前想象中的世界。因此答案为 B。
did the speaker major in during the first two years of college?
答案：D
详解：短文中，讲话者提到他在大学时学的 是国际商务，而且打算进入一个法学院，但是在
大三的时候意识到自
己不想成为一名律师。因此答案为 D。
is one of the biggest lessons the speaker has learned in life?
答案：C
详解：短文最后，讲话者提到自己在生活中所学到的其中最重要的一点是：为你所拥有的感
到快 乐。因此答案为 C。
Part Ⅲ Reading Comprehension
Section A
全文翻译：
技术变革为生活在 20 世纪 90 年代的美国人带来了巨大的全新选择。这十年里，娱乐、
商业、研究和通讯的新
形式在美国普及开来。这场变革背后的推动力是一个众所周知的（26）新事物——因特网。
20 世纪 70 年代国防部开发了因特网。在遭到攻击的情况下，军事顾问提出了能从另一个
终端操控一台计算机
的（27）优势。在因特网发展的初期，它主要被科学家用来与其他科学家交流。直到 1984
年，因特网（28）依然
由政府控制。
因特网用户早期面临的一个问题是网速。电 话线路只能以（29）有限的速度传输信息。光
纤电缆的发展使得每
分钟接收数十亿比特的信 息成为可能。英特尔等公司开发出更快的微处理器，这样个人计算
机能够以更快的速度处
理（30）输入的信号。
20 世纪 90 年代初，万维网被开发出来，在很大程度上是为了（31）商业目的。企业制作
主页，放上文字和图 < br>片以销售产品。很快，购买机票、（32）预订旅馆、甚至购买汽车和房子都可以在网上进行。
大 学把研究数据（33）
发布到因特网上，学生不用离开宿舍就能找到（34）有价值的信息。公司很快 发现员工可
以在家工作，通过网络（35）
提交任务，这样全新的远程办公族就出现了，他们不剃胡子、穿着睡衣在家办公。
详解详析：
26.答案：F）innovation
详解：名词辨析题。空格前为冠词 a（n），空格后为过去分词短语 popularly known as the
Internet 作后置定语修

饰该空，因此应填入可数名词单数。本段第一句 指出，技术变革为美国人带来了巨大的全新
选择，而空格所在句指
出，这一变革背后的推动力是众所周知的_____因特网。由此可知，因特网在 30 世纪 90 年
代的美国是新事物，故
填入 F）innovation“新事物，创新”。
27.答案：A）advantage
详解：名词辨析题。空格位于冠词 the 和介词 of 之间，应填入名词。本句意为，在遭到
攻击的情况下，军事顾问
突出了能够从另一个终 端操控一台计算机的______。由句意可知，这样的操作对终端所在地
没有限制，具有一定的
优势，因此应填入 A）advantage“优势，优点”。
28.答案：L）remained
详解：动词辨析题。分析句子结构可知，本空位于主语之 后，缺少谓语，应填入动词。由句
意可知，因特网到 1984
年一直由政府控制，应填入表示持续一段时间的动词，故答案是 L）remained“继续，依然”。
29.答案：G）limited
详解：形容词辨析题。本空位于冠词 a 和名词 rate 之间，因此应填入形容词修饰 rate。
空格所在句的前一句提到，
因特网用户早期面临的一个问题是网速，也就是说早期 的因特网网速很慢。本句是对前一句
的进一步解释，电话线
路只能以_______速度传输信息。空格处应填入有“慢”含义的形容词，故答案是 G）limited“有
限的”。
30.答案：E）incoming
详解：形容词辨析题。本空位于冠词 the 和名词 signals 之间，因此应填入形容词修饰
signals。本句意为，英特尔
等公司开发出更快的微处理器，这样个人计算机能够以更 快的速度处理_______信号。空格
所在句的前一句提到，
光纤电缆可以让每分钟接收的 信息以数十亿比特计，这就要求个人计算机能更快地处理这些
接收的信号，故应填 E）
incoming“进来的，正来临的”。
31.答案：B）commercial
详解：形容词辨析题。本空位于名词 purposes 之前，应填入形容词作定语修饰 purposes。
由空格所在句的下一句
可知，企业利用万维网创建主页以销售产品，由此 可知万维网诞生之初是因为企业的需求，
故应填入 B）commercial “商业的”。
32.答案：M）reservations
详解：名词辨析题。该空位于 hotel 之后，而且与 airline tickets、cars and homes 构成
主语，因此应填入名词。该
句意为，很快，购买机票、______旅馆，甚至购买汽车 和房子都可以在网上进行。结合日常
生活，我们知道在网上
可以预订宾馆房间，故空格处应填 M）reservations“预订”。
33.答案：K）posted
详解：动词辨析题。分析句子结构可知，本空位于主语 universities 和宾语 research data
之间，因此应填入动词作
谓语。本句意为，大学把研究数据_ _____到因特网上，学生不用离开宿舍就能找到_______
信息。由后半句可知，
学 校的数据放到网上，学生足不出户就能找到信息。因此本空应填入含有“上传”含义的动词，
故答案为 K）posted “发布，张贴”。
34.答案：O）valuable
详解：形容词辨析题。本空位于不可数名词 information 之前，应填入形容词作定语。由句
意可知，学生足不出户
就可以在网上查到学校发布的研究数据，而这些数据对他们来说肯定是有用的，因此应填入
O）valuable“有价值
的，珍贵的”。