人教版（2019）必修第一册 Unit 1 Teenage Life 单元复习课件（共66张ppt）

(共66张PPT)
Unit 1 Teenage Life
Period 5
单元复习课件
Learning objectives
1.To review the knowledge in this unit.
2.To do some exercises by using the knowledge.
1．____________ n. (13至19岁之间的)青少年
2．____________ n. 辩论；争论vt.&vi. 辩论；争论
3．____________ n. 话题；标题
4. ___________n．内容；[pl.]目录；(书、讲话、节目等的)主题
5．________n．专家；行家； adj.熟练的；内行的；专家的
6．____________ adv. 显然，明显地
7．____________ n. 文学；文学作品
8．____________ adj. 额外的；附加的
9．__________ vi.&vt. 停止；戒掉；离开(工作职位学校等)
10.____________n.工作计划；日程安排 vt.安排；预定
11.___________n.成人
teenager　
debate　
topic　
obviously　
literature　
extra　
quit　
Part 1重点单词·巧记
content　
expert　
schedule
adult
12．____________ n. (书、诗歌等的)名称
13．____________ adv. 事实上
14．____________ n.一代（人）
15．____________ n. 主编；编辑
title　
actually
generation
editor
知其意
1．teenage adj. ________________
2．ballet n. ________________
3．greenhouse n. ________________
4．freshman n. ________________
5．extra-curricular adj. ________________
7．plate n. ________________
8．youth n. ________________
十几岁的(指13至19岁)；青少年的
芭蕾舞
温室；暖房
(中学)九年级学生；(大学)一年级新生
课外的；课程以外的　
盘子；碟子
青年时期；青春
Part 2词性转换
1.__________adj.青少年的→____________n.登记;注册
2._______vt.较喜欢→_____________n.偏爱
3.____________adj.难以理解的；不清楚的→________vt.使
糊涂；使迷惑→___________adj.糊涂的；迷惑的
4.____________n.动作；运动→_______ vt.& vi.移动；搬动
5.__________adj.正式的→__________adv.正式地
teenager
teenage
prefer
preference
confusing
confuse
confused
movement
move
formal
formally
6._____vt.& vi.适合；合身→_________adj.合适的；适用的
7._______adj.流利的；熟练的→___________adv.流利地；熟练地→__________n.流利;熟练
8.___________n. 挑战; 艰巨任务vt. 怀疑→______________
n. 挑战者→______________adj. 挑战性的
9.__________adv.事实上→________adj.实际的；真实的
suit
suitable
fluent
fluently　
fluency
challenge
challenger
challenging
actually
actual
10.__________vt.& vi.毕业n.毕业生→____________n.毕业
11.___________adj.高级的;先进的→__________n.前进;发展　vt.& vi.前进；发展　
12. adj.负责的；有责任的→_______________ n.责任；义务
13.__________n.解决方法；答案→_________v.解决；解答
graduate
graduation
advance
responsible
responsibility
solution
solve
advanced
1. __________________ 喜欢……多于……
2. __________________ 打扫(或清除)干净
3. __________________ 对……适合的
4. __________________上课
5. __________________报名(参加课程)
6. __________________单独地，独自地
7. __________________加入球队
8. __________________分发
prefer…to …
clean up
suitable for
take courses
sign up (for sth)
on my own
make the team
hand out
Part 3 核心短语
9. __________________对……负责
10. __________________做好准备
11. __________________生火
12. __________________交一些朋友
13. __________________喜爱
14. __________________集中；特别关注
15. __________________对……很入迷
16. __________________全神贯注于
be responsible for
be well prepared
make a fire
make some friends
be attracted to
focus on
addicted to
concentrate on
Part 4 重点知识讲解
He enlisted as a volunteer in the army.
他以志愿兵从军。
Helen volunteered to have Thanksgiving at her house this year.
海伦主动提出今年在她家过感恩节。
1.volunteer①n.[C]志愿者;义务工作者;自告奋勇者
②v.自愿做;义务做;无偿做 ③adj. 志愿的(教材P12)
语块积累
(1) work/act as a volunteer 做志愿者
a volunteer to clean up the park 自愿来打扫公园的人
(2) volunteer for 自愿为......服务；自愿做
volunteer as 自愿充当
volunteer to do sth. 自愿做某事
(3) a voluntary agreement 自愿协议
[巩固内化]　用volunteer的适当形式填空
①A big number of ____________ were needed to help the poor in the western China.
②Helen ____________ to have Thanksgiving at her house this year.
③He made a ____________ statement to the police.
volunteers
volunteered
voluntary
[衔接写作]　完成句子
I felt good about ___________________.
我很高兴自愿帮忙
volunteering to help
2. prefer vt. (preferred; preferred; preferring) 较喜欢
prefer (doing) sth 更喜欢/宁愿……
prefer (doing) sth to (doing) sth.喜欢……而不喜欢……
prefer to do sth宁愿做某事
prefer sb to do sth宁愿某人做某事
prefer to do sth rather than do sth 宁愿做……而不愿做……
would prefer that (从句谓语多用虚拟语气) 宁愿
I prefer helping others. P12
[谚]宁可吃亏，不贪便宜。
I would prefer cooking myself to eating in a restaurant.
我宁愿自己做饭而不愿下馆子。
I prefer to work rather than (to) sit idle.
＝Rather than sit idle I prefer to work.
我宁愿工作而不愿闲坐。
单句语法填空
He prefers ________(be) a volunteer .
The old man preferred _____(live) alone to _____ (go) abroad with his son.
I prefer to talk with you face to face rather than _____(talk)with you on Wechat .
to be
living
talk
going
【语境应用】一句多译。
孩子们宁可骑自行车到乡下去，也不愿整天待在家里。
1) The children preferred _______ to the countryside to _______ indoors all day.
2) The children preferred ________ to the countryside rather than ______ indoors all day.
3) The children would rather ______ to the countryside than ______ indoors all day.
cycling
staying
to cycle
stay
cycle
stay
[衔接写作]　完成句子
①I prefer ____________ alone after a day's work.
工作一天之后,我更喜欢独自散散步。
②They _______ good news ______ bad.
比起坏消息,他们更喜欢好消息。
③I prefer _______ to _______.比起表演,我更喜欢唱歌。
④I _________________ coffee rather than tea.
我爱喝咖啡，不愿喝茶
walking/ to walk
preferred to
singing acting
[衔接高考]　(2020.全国II)
While the younger generations prefer___________________________
(communicate) visually, for those used to wprking with traditional tools like email, it may feel like a learning curve(曲线).
to communicate/communicating
have a preference for
3. content [k n tent]目录，内容
联想记忆:con-来+tent帐篷→一起来到帐篷里→被包含在里面→内容;目录
[2019天津卷] I was ready to pay for my bananas at the grocery one night, when fear seized me. My wallet was gone…The hearting-stopping moment was quickly followed by mental math. How much time and money would it cost to replace the 18 of that little wallet The credit cards, the driver’s license, the cash, all lost to the bus.
A. parts B. contents C. details D. ingredients
B
(1) the contents of the letter 信的内容
in content and form 在内容和形式上
(2) a content expression 满足的表情
feel/be content with (=be satisfied with)
对......感到满意
be content to do sth. (=be willing/pleased to do sth.)
愿意做某事
(1) Are you content _____ your present achievements
你对你现在的成就满意吗？
(2) She is content ________(lead) such a peaceful life.
她满足于过这样平静的生活。
(3) He contented _______(he) with a small achievement.
他以小小的成就满足自己。
(4) Andy is content ____the toy. It is the best he has ever got.
安迪对这个玩具很满意。这是他得到的最好的礼物。
with
to lead
himself
with
4. suitable adj. 合适的；适用的
Which club do you think is suitable for Adam Why P12
suitable for 对……适合的
be suitable to do sth 适合做某事
suit n. 一套外衣，套装
vt. 适合；使适宜
suit … to… 使……适合……
suit one’s needs 适合某人的需要
【语境应用】单句语法填空。
1) I think working in a team is _______ (suit) for me, because I believe “two heads are better than one”.
2) If you look at all sides of the situation, you’ll find probably a solution that _______ (suit) everyone. (2020江苏高考)
3) A good teacher suits his lessons _______ the age of his pupils.
suitable
suits
to
5. challenge v./n. 挑战
1) challenged adj. 受到挑战的、
2) unchallenged adj. 没有异议的/无人挑战的
3) challenging adj. 具有挑战性的
[2018全国3卷] I quickly lower myself, ducking my head to avoid looking directly into his eyes so he doesn’t feel __________(challenge).
challenged
[巩固内化]　单句语法填空
①He accepted his friend's challenge ________ (swim)across the river.
②His idea is a challenge ______ the theory that man is an integral part of nature.
③Mona gave him a __________ (challenge)look.
④In this environment, designers, developers and managers
__________(challenge) to keep up with the needs of their audience.
to swim
challenging
challenges
[衔接高考]　(2020.新高考I)
Many of their families were struggling to make ends meet. People were trying to help each other meet the ________ (challenge) .
to
are challenged
6. The first week was a little confusing.(教材P14)
confuse v. 使混乱，使困惑
confused adj. 感到困惑的
confusion n. 混淆, 混乱, 困惑 in confusion狼狈;慌乱
confuse A with/and B 把A与B混淆
get/be confused about... 对……感到困惑
〖词汇拓展〗
[知识回顾]
confusing adj.令人困惑的
｝
confusing用来修饰物 ,可以做定语或者表语
confused用来修饰人,常作表语
confusing adj. 难以理解的；不清楚的
The instructions on the box are very confusing.盒子上的使用说明很令人费解。
confuse vt. 使糊涂；使迷惑
What you said just now confused me.
confused adj. 糊涂的；迷惑的
I am confused—say all that again.
我被搞糊涂了，把那件事从头到尾再说一遍吧。
confusion n. 混淆；困惑
The name was changed to avoid confusion with another firm.
改名是为了避免和另一家公司混淆。
[巩固内化]　单句语法填空
①The sentences were very ____________(confuse) and I couldn’t understand them.
②People are confused ____________ all the different labels(商标) on food these days.
③Ted was really_________ (confuse) by the __________(confuse) problem which also __________(confuse) other people for a long time.
confusing
about
confused
confusing
confused
[衔接高考]　(2020.新高考II)
The woman looked at him in ________ (confuse) and said something about changing her clothes.
[衔接写作] 补全句子
①The instructions are so _________ that I get totally __________.
说明书太令人费解了，我完全(被弄)糊涂了。
②Don’t ________ the word “weather”______ “whether”.
不要把weather和whether这两个单词弄混了
③The driver ___________________ the road signs.
司机搞不清楚这些路标。
confusing
confused
was confused about
confusion
confuse
with
fluent adj.(尤指外语) 流利的；熟练的
She is fluent in Polish.
fluently adv. 流利地；流畅地
He speaks Italian fluently.
fluency n. 流利，流畅
Fluency in French is required for this job.
7.fluent adj.(尤指外语)流利的；熟练的
(1) be fluent in...... （语言）熟练的，流利的
be fluent in English 讲英语流利
(2) speak three languages fluently 流利地说三种语言
read the poem fluently 准确地读这首诗歌
(3) fluency in English 流利的英语
归纳总结
[例句] 用fluent的各种形式填空
1.She has studied eight foreign languages but is _______in only six of them .
2.___________in English is required for this job .
3.Now he can speak French _________.
fluently
fluency
fluent
(1) She was fluent ______English, French and German.
她能说流利的英语、法语和德语。
(2) The young man has the advantage of speaking three languages __________(fluent).
这个年轻人有能流利地说三种语言的优势。
(3) The team lacked _________ (fluent) during the first half.
该队在上半场打得不够流畅。
in
fluently
fluency
8. I know that Chinese is a very difficult language, but I hope to be fluent when I graduate. (教材P14)
句意：我知道中文是一门十分难学的语言，但我希望在毕业时能说一口流利的汉语。
graduate vi.&v.毕业;获得学位 n. 毕业生
[知识回顾]
graduate from+学校 毕业于……(学校)
graduate in+专业 毕业于……(专业)
〖词汇拓展〗
graduation n. 毕业
(1) My younger brother will graduate ________ Chinese Literature__________Peking University this year.
我弟弟今年将从北京大学中文系毕业。
(2) They asked what his plans were after _________ (graduate)
他们问他毕业后有什么打算。
(3) They are the ___________ (graduate) who graduated __________Wuhan University and now are playing an important part in our company.
他们是武汉大学的毕业生，现在在我们公司担任重要的角色。
in
from
graduates
from
graduation
9. recommend vt. 推荐；建议；介绍
My adviser recommended that I should sign up for advanced literature because I like English and I’m good at it. P14
recommend sth to sb=recommend sb sth
向……介绍, 向……推荐
recommend sb to do sth 建议某人做某事
recommend doing... 建议做……
recommend sb as... 推荐某人当……
recommend+ that… (should) do… 建议……
recommendation n. 推荐；介绍信
【注意】
recommend, suggest, request, demand, urge, propose, advise, insist, require, order, command等词所接的宾语从句以及它们对应的名词所接的表语从句、同位语从句，再加上它们的过去分词所在的“It is/was+过去分词+主语从句”等结构中的谓语动词必须用(should) do的虚拟语气形式。
[练透]——单句语法填空
①Eye doctors recommend that a child's first eye exam
______________ (be) at the age of six months old.
②My English teacher recommended ________(buy) an English-Chinese dictionary which he thought would be of great help to my studies.
③[2021·新高考Ⅰ卷]If I had to make just one ________________
(recommend) for where to stay in Rome, it would be Yellow Hostel.
④I suggest that you first fly to Beijing, where you can stay for a week.
→I___________ that you first fly to Beijing, where you can stay for a week.

(should) be
buying
recommendation　
recommend
【语境应用】完成下列句子。
1) 如果你去北京，我建议参观长城。
If you go to Beijing, ____________________________________
2) 我建议你看一下这部电影。
______________________________________
3) 你可以给我推荐一家好的餐馆吗？
______________________________________
4) 医生建议她卧床休息一星期。
The doctor_______________________________________ for a week.
I recommend visiting the Great Wall.
I recommend you to see this film.
Could you recommend me a good restaurant
recommended that she (should) stay in bed
advanced adj.高级的;高等的;先进的
advanced education 高等教育
[知识回顾]
10. My adviser recommended that I should sign up for advanced literature because I like English and I'm good at it. (教材P14)
〖词汇拓展〗
advance n.前进; 发展 vi. 前进；发展 vt. 发展；促进
in advance (of sth) (时间上)事先;提前= ahead of time
advance our knowledge of... 增进我们对......的了解
advanced adj. 高级的；高等的；先进的
This science and technology-based theme park uses the most advanced technology.
这个以科技为基础的主题公园使用了最先进的技术。
advance n. 前进；发展
These advances in medical science will help man to enjoy a longer life.
这些医学上的进步将有助于人类延长寿命。
vi. 前进；发展
Without vision, you will advance, but you will not find where you want to go, and your motivation will decrease.
没有远见，你会前进，但找不到自己想去的地方，你的动力就会减少。
vt. 发展；促进
They use the Internet as a tool to advance their research.
他们利用互联网作为推进研究的工具。
[巩固内化] 单句语法填空：
1 We should learn from all the _________ (advance) teaching methods.
2 The troops fanned out as they ___________(advance).
advanced
advanced
[衔接写作]　同义句改写
People have already bought tickets ahead of time.
People have already bought tickets ________.
[衔接高考] (2020.新高考I)
She decided to go back to college ________(advance) her career and to be able to better support her family while doing something she loves: nursing.
in advance
to advance
11. quit v.停止(做某事)/戒掉/离开(工作岗位)
联想记忆：qu（去）+it（它）=去它的，不干了，离开
1) quit doing sth. 停止做某事
2) quit to do sth. 辞职去做某事
过去式和过去分词：quit, quit
语块积累：
quit school/office 辍学
quit one's job 辞职
quit the habit of smoking 戒除吸烟的习惯
quit doing sth. 停止做某事
quit drinking/smoking 戒酒/戒烟
[巩固内化] 单句语法填空：
1 Why don't you quit __________(chat)jawing and pour that drink
2 He has decided _______(quit) his job as an office boy in Athens..
3 We're ________(obvious) going to need more help.
chatting
to quit
obviously
[衔接写作]　完成句子
1. You must_____________. Most important of all，you should start taking exercise.
你必须戒烟，最重要的是，你应该开始运动。
2. She ___________ as soon as she had taken her GCSEs.
她一拿到普通中等教育证书后就没再上学了。
3. ______________ they have no desire for peace.
很显然，他们没有和平的愿望。
quit smoking
quit school
It is obvious that
12.responsible adj. 负责的；有责任的
责任；义务 ____________________
对…负责________________________
负责…;有…责任_____________________
做某事是某人的责任_________________________
责任感____________________________
responsibility n.
be responsible for…
have/take responsibility for…
It is one’s responsibility to do sth.
a sense of responsibility
responsible adj. 负责的；有责任的
We should be responsible for the next generation.
我们应该对下一代负责。
It's time you started acting like a responsible adult.
responsiblity n. 责任，职责，义务
I don't feel ready to take on new responsibilities.
我觉得还没准备好承担新的责任。
(1) As a guide, she should be responsible ________ her tourists.
作为一名导游，她应该对游客负责。
(2) The poor health is responsible __________ his quitting the job.
身体不好是他辞职的原因。
(3) Since no one else has volunteered, Lucy will be responsible for _________ (supply) food for the trip.
由于没有其他人自愿参加，露西将负责这次旅行的食物供应。
(4) It's my _____________ (responsible) to lock the doors.
锁门是我的责任
(5) The teacher feels a strong sense of ______________ (responsible) towards her students.
老师对学生有强烈的责任感。
for
responsibility
supplying
for
responsibility
13.solution /s lu n/ n. 解决办法；答案
构词记忆：solve v. 解决；解答+tion(行动的)结果=解决办法；答案
a solution to ... 解决...的办法
The manager announced that this was the real solution to the problem.
(1) The school advisers help you talk through your problems, but they don't give you any direct _________(solve).
学校顾问帮助你解决问题，但他们不会给你任何直接的解决方案
(2) As usual, he found a practical ___________ (solve) to the difficult problem.
像往常一样，他找到了解决这个难题的切实可行的办法。
(3) They are arguing with their classmates about the solution ________ the problem.
他们正在和同学们争论这个问题的解决办法。
(4) It's too hard for me to _______ this problem.
这个问题对我来说很难解决。
solutions
solution
to
solve
14.schedule n. 工作计划；日常安排
谐音记忆：路上的车(che) 堵(du) 了(le)→耽误了“日程安排”
schedule n. 工作计划；日程安排 vt.安排；预定
ahead of schedule 提前
on schedule 按时间表
be scheduled for 　预定在
be scheduled to do sth. 预计做某事
[知识回顾]
[衔接写作]　同义句改写
No competitor will compete for score on other than the scheduled date(s).
①No competitor will compete for score __________________ .
②No competitor will compete for score __________________ .
[巩固内化] 单句语法填空　
①We are scheduled _________ (arrive)in Shanghai at 10:30..
② An operation will be scheduled ____him tomorrow morning.
③The plane should be landing right ______schedule.
to arrive
for
ahead of schedule
ahead of time/ in advance
on
[衔接高考](2020.全国I)　
While Queensland Rail makes every sffort to ensure trains run as ___________(schedule) , there can be no guarantee of connections between trains or between train services and bus services.
scheduled
15.behave vt&vi. 举动，（举止或行为）表现
behave oneself 有礼貌，表现得体
behave well/badly 表现好/不好
behave as if/though 表现得好像...
well-behaved adj. 表现好的
badly-behaved adj. 表现差的
(1) Smoking in public is bad ___________ (behave).
在公共场所吸烟是不好的行为
(2) His __________ (behave) tpwards her was becoming more and more aggressive.
他对她的行为变得越来越咄咄逼人。
(3) Boys and girls may _______ differently.
男孩儿和女孩儿的表现可能不同。
(4) The audience was surprisingly _______________(behave).
观众令人出奇地守秩序
behaviour
behaviour
behave
well-behaved
16.attract vt.吸引;引起……的注意(或兴趣)
[教材原句] It is not unusual for teenagers of your generation to be attracted to computer games and the online world.(P18)
对于你们这一代青少年来说,喜爱电脑游戏和网络世界是很正常的事情。
考点必记
(1)attract sb to...把某人吸引到……
attract one’s attention吸引某人的注意力
be attracted to...喜爱……
(2)attraction n.吸引力;吸引人的事物
tourist attraction旅游胜地/景点
(3)attractive adj.吸引人的;迷人的;有魅力的
be attractive to对……有吸引力
[巩固内化] 用attract的适当形式填空　
①What _______ me most in Beijing is that there are many ________ tourist ________, like the Great Wall, the Summer Palace, which _____________ eyes from every corner of the world so far.
②The restaurant put up pictures about their dishes, _________ more customers.
attracts
attractive
attractions
have attracted
attracting
[衔接高考](2018.全国III)　
What ___________(attract) the early settlers to New York City
attracted
17. focus vi. & vt. 集中(精力、注意力等)； (使)调节焦距
n. 中心；重点；焦点
But spending too much time online is unhealthy and makes it very difficult to focus on other things in life. P18
focus on/ upon sth 集中于……；特别关注
focus one’s attention/ eyes/ energy on…
集中某人的注意力/目光/精力于……
out of focus 模糊不清/焦点没有对准的
in focus 清晰的/焦点对准的
bring sth into focus 使……成为关注的焦点
the focus of attention/ concern 注意力/关注的焦点
[衔接写作] 完成句子　
①When the heavy fog disappeared, the mount in the distance _____________ .
当浓雾散去，远处的山变得清晰起来。
②Children are _____________ families，shouldering the hope of their parents.
孩子是家庭的中心，承载着父母的希望。
③If we find those materials interesting，we’ll _____________________ them for long.
如果我们发现那些材料有趣，我们的注意力就会长时间集中在它们身上。
④They _______________________ their soil rich and free of disease.
他们关注的是保持土壤肥沃并免受病害。
came into focus
the focus of
focus our attention on
focus on keeping
[衔接高考](2018.全国II)　
You’ll want to continue to________________(集中精力在) positive choices.
focus on/concentrate on
18.be addicted to对……上瘾
(1)be/become addicted to... 沉溺于……；对……上瘾
(2)addict vt. 使沉溺；使上瘾 n．有瘾的人
addict oneself to sth. 某人沉溺于某事
(3)addicted adj. 入了迷的；上了瘾的
Addiction n. 沉溺；嗜好；癖好
[佳句]　With an increasing number of amusement applications installed in cellphones，many adults are addicted to cellphones，thus influencing their work and life.
[巩固内化] 单句语法填空　
①Learning that you are addicted ____________ table tennis，I am writing to invite you to join the table tennis team in our school.
②Addicted to ____________(play) computer games，he has wasted lots of time.
③I discovered an ____________(addict) to housework which I had never felt before.
[衔接写作]完成句子　
①Many kids ___________________ surfing the Net，so they have lost interest in study.
很多孩子沉迷于上网，因此他们对学习失去了兴趣。
②People who ________________ shopping should break this habit. 购物成瘾的人应该改掉这个习惯。
addict themselves to
to
playing
addiction
are addicted to
习题跟踪训练
单词拼写
1．[2021·新高考卷Ⅰ]As a regular reader of Youth, I am fascinated by columns on ________(青少年).
2．________ (显而易见), maintaining a healthy and balanced diet is of great importance to us all.
3．[2021·天津卷3月]Both ________ (成年人)and youngsters aged 13＋ are required to deliver our newspaper.
4．[2020·江苏卷]These films can help foreign friends better understand Chinese ________(文学), geography, history, food.
5．The world Adolescent Robotics Competition is __________(安排；预定) to be held at the end of July in Tianjin.
6．With a serious illness to treat, the girl had________ (放弃) school by the end of last term.
teenagers　
Obviously　
adults　
literature　
scheduled　
quit
拓展单词运用
1．Although life in Senior 3 is ________________,I am willing to meet all the
_______________.(challenge)
2．①As is known to us, the scenery of the West Lake is very ________________.
It is one of the main_______________in China.Another reason why people are
deeply____________to it is that there are many romantic legends related to it.
(attract)
3.Once you are______________to playing on the phone,you will find it hard to
fight the _______________.(addict)
4.Kong Rong ___________so well when he was young that his good___________
has been praised by people for thousands of years.(behave)
challenging　
challenges　
attractive　
attractions　
attracted
addicted
addiction
behaved
behaviour
5．[全国Ⅰ卷，书面表达]I would like to do some ________ work in
the exhibition. So I am writing this letter asking to be a ________．
(voluntary)
6.He was really ___________by the__________problem ,which
also________people for a long time.（confuse）
7.Dr. Zhong Nanshan spoke English _________.His _______in
English really astonished me .(fluent)
8.[2021届河北石家庄]In China,finance,sience and ________(advance) technology are thought to be more promising.
9.[2019课标全国2]Gordon says his students are emailing daily with
NASA engineers about the problem,readying a workable _______
to test in space.(solve)
voluntary　
volunteer　
confused
confusing
confused
fluently
fluency
advanced
solution