初中英语Section B精品巩固练习

这是一份初中英语Section B精品巩固练习，文件包含同步训练人教新目标GOFORitUnit6课时6SectionB3a-SelfCheck教师版docx、同步训练人教新目标GOFORitUnit6课时6SectionB3a-SelfCheck学生版docx等2份试卷配套教学资源，其中试卷共25页， 欢迎下载使用。

【学习目标】
1. 语言知识目标：
1) 复习一般过去时态被动语态的用法。
2) 能够用英语讲述自己所熟悉的某一发明的简单过程。
3) 能用就本单元所学习的寓言故事等语言材料，进行完型填空。 并用英语介绍某一发明的简要过程。
2. 情感态度价值观目标：
了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界，养成勤于思考，善于发现的好习惯，培养学生的创造精神。
【教学重难点】
1. 教学重点：
1）用英语介绍某一发明的简要过程。
2）掌握本单元所学的词汇、句型及语法知识，并能进行综合练习运用。
3）完成Self check部分的练习试题。
2. 教学难点：
用英语介绍某一发明的简要过程。
【预习导学】
一、 翻译短语。
1. decide n _______________
2. cme up with _______________
3. lead t ______________
4. all f a sudden ________________
5. use smene else’s idea ____________
6. be used fr _____________
二、翻译下面的句子。
1. 这个特殊的钢笔是由刘杰发明的。
_______________________________________________________
2. 很难断定谁先想到这个主意的。
_______________________________________________________
3. 他们认为发明家是借用其他人的想法来创造自己的发明。
______________________________________________________
答案：一、1. 取决于，依靠 2. 想出，提出 3. 导致
4. 所有孩子 5. 利用别人的想法 6. 被用于……
二、1. This special pen was invented by Liu Jie.
2. It's hard t tell wh thught f the idea first.
3. They think that inventrs brrw ther peple's ideas t create their wn inventins.
【探究提升】
一、复习重点句型
1. I think the TV was invented befre the car.
我认为电视是在轿车之前发明的。
2. ---When was the telephne invented? 电话是什么时候发明的？
---I think it was invented in 1876. 我认为电话是在1876年被发明的。
3. ---What are they used fr? 他们可用来做什么？
---They are used fr changing the style f the shes.他们可用来改变鞋子的样式。
4. ---When was the zipper invented? 拉链是什么时候发明的？
----It was invented in 1893 它是在1893年被发明的。
5. ---Wh was it invented by? 它是由谁发明的？
---It was invented by Whitcmb Judsn. 它是被惠特科姆.贾德森发明的。
6. ---When was tea brught t Krea?
茶是什么时候被带到韩国的？
---It was brught t Krea during the 6th and 7th centuries.
它是在六至七世纪被带到韩国的。
7. ---What is the ht ice-cream scp used fr?
这个热的冰其淋勺子是用来做什么的？
---It’s used fr serving really cld ice-cream
它用来提供真正冷的冰淇淋。
二、写作
当前，科技发展日新月异，高新产业更是突飞猛进。现代科技改变了人们的生活，也激发了全民学科学、爱科学、用科学的热情，形成了“大众创业，万众创新”的科学热潮。本单元以“谈论发明物的历史及用途”为话题，涉及科普知识与技术等内容，是学生最感兴趣的话题之一。写作体裁多为说明文，写好这类文章一定要抓住事物的特征、功能和用途。在中考中，说明文一般要按照“总一分”结构或并列结构布局，而且在说明一件事物的时候，应按照一定的顺序：如时间顺序、空间顺序或逻提职序等。
体裁：说明文
时态：以一般现在时为主
人称：第三人称。
思路：1. What’s it and when was it invented?
2. What’s it used fr?
3. What des it lk like?
4. Hw des it wrk?
5. Hw much is it?
必背句型
1. I think … is a very useful inventin. 我认为……是一项很有用的发明。
2. … was invented by … ……是由…… (某人)发明的
3. … was invented in … ……是在…… (某时间)发明的
4. It was used fr … 它被用来……
5. … is made f ……… 是由……(材料)制成的
6. changed ur life a lt. 极大地改变了我们的生活
7. . Which is the mst useful inventin?最有用的发明
8 .It makes my life mre enjyable and mre cnvenient.他让我的生活更舒适和方便。
话题好句积累
【开头句】
1. Science plays an imprtant part in ur life. 科学在我们的生活中起着重要的作用。
2. … is an imprtant/ useful inventin.是一项重要/有用的发明。
3. WeChat is widely used in the wrld.微信在世界范围内应用广泛。
4. Shared bikes are mre and mre ppular nw.共享自行车现在越来越流行。
5. If I was an inventr. I want t invent a rbt.如果我是个发明家。我想发明一个机器人。
6. Shpping nline is very ppular amng yung peple.网上购物在年轻人中很受欢迎。
2. 中间句
1. Generally, its advantages can be seen as fllws.一般来说，其优点如下。
2. Cmputers can d mst f the things peple can d.计算机能做人们能做的大部分事情。
3. Using smartphnes distracts ur attentin frm ur lessns.使用智能手机会分散我们对课程的注意力。
4. Sme students spend t much time nline, playing electrnic games and sending text messages after class.有些学生花太多时间上网、玩电子游戏和课后发短信。
【结尾句】
Thrugh the abve, I believe that the psitive aspects verweight the negative nes. 综上所述，我认为积极的方面超过了消极的方面。
提纲
范文
This special pen was invented by Liu Jie. It has three clrs and is used fr taking ntes quickly. It is very useful if yu have a lt t write dwn. The pen cmes with a micrchip that can stre a list f cmmn wrds that yu will use. Yu can prgram the wrds yu will use ften int the micrchip's memry, then assign a shrt frm t each wrd. When yu are writing, yu just need t write the shrt frms with the pen, press a buttn n the pen and all shrt frms will change int the actual wrds. The micrchip can cntain up t 50 wrds and yu can make changes t the list f wrds whenever yu need t.Yu must want t knw hw much my new inventin is. It’s 500 yuan. It’s nt very expensive, is it?I think the pen is s cnvenient and helpful .I believe yu will als be happy with it.They are ging t change yur hmewrk cmpletely .
【体系构建】
1.Master the fllwing wrds and sentences f Unit 6.
2.Learn t write a descriptin abut the inventin by using the passive vice.
3.Review the passive vice （past tense ）.
【强化训练】
一、单项选择
1．Frm May 17 t 19, varius activities _________ in Fujian Museum t celebrate the Internatinal Museum Day.
A．heldB．have heldC．was held
2．After three spirits visited Scrge, the ld man _________ realize the imprtance f living with a grateful heart.
A．made tB．was made tC．was madeD．made
3．—Why have I never seen this kind f car?
—Because it ________ by that car factry last mnth.
A．is prducedB．was prducedC．prducesD．is prducing
4．—Yur address ________ just nw. Wuld yu please say it again?
—N prblem. It’s N 15, the Main Avenue.
A．isn’t writing dwnB．hasn’t put dwnC．wasn’t taken dwn
5．—Jim, hw d yur parents like cuntry music?
—________ my dad ________ my mm likes it. They bth like cuntry music.
A．Bth; andB．Neither; nrC．Nt nly; but als
6．I didn’t answer when I _________ t deal with the prblem.
A．was askingB．askedC．am askedD．was asked
7．A lt f flwers ________ in the park last year.
A．plantB．are plantedC．plantedD．were planted
8．Many famus peple _______ t celebrate the 100th anniversary（纪念日）f ur schl last mnth.
A．inviteB．were invitedC．will be invited
9．The wrld’s attentin ________ by the idea f “Made in China” in the 2022 FIFA Wrld Cup in Qatar.
A．was caughtB．will catchC．caught
10．Few students culd understand the sentence until it ________ by ur teacher.
A．explainsB．explainedC．was explainingD．was explained
二、完形填空
阅读下列短文，从每小题所给的A、B、C、D四个选项中选出一个最佳选项。
Sit With Us
Yu’re at yur new schl. It’s lunch time, but yu dn’t have anyne t sit with. Yu want t jin smene at their table, 11 yu’re nt sure if they’re friendly. What d yu d? Natalie’s 12 f slving the prblem was t create an app. She knws what it feels like t be alne at a new schl. She fund it difficult t make new friends and had t 13 a new table at lunch every day. If she sat 14 , she felt lnely. But if she asked t jin smene and was 15 , she felt embarrassed. She created a lunch-planning app t help students like 16 find peple t have lunch with.
The app-called Sit With Us—is 17 . If a student is having lunch in the afternn, he r she can create an invitatin. Other students can pen the app and 18 that invitatin. They can then use the app t decide when and where t 19 . This allws students t make 20 nline instead f face-t-face. This is the reasn why it wrks s 21 : it lwers the risk f being refused, and the embarrassment that ges alng with it.
Natalie is 22 t see that peple are replying t her app actively—especially thse wh suffer frm bullying(遭受欺凌). Sn after she made her app available t the public, she wn a prize fr it. She 23 appeared in many news stries.
Natalie was even asked t speak at a university. In her 24 , Natalie wanted peple t knw that yu dn’t have t d smething 25 t change lives. Smetimes, a simple thing—like having a friend t enjy lunch with—can make all the difference.
11．A．butB．sC．frD．r
12．A．curseB．habitC．methdD．questin
13．A．search frB．fix upC．give utD．get away frm
14．A．in publicB．in a hurryC．n timeD．by herself
15．A．receivedB．refusedC．discussedD．believed
16．A．usB．herC．itD．them
17．A．simpleB．cheapC．privateD．nisy
18．A．sendB．missC．makeD．accept
19．A．treatB．studyC．meetD．exercise
20．A．trubleB．reprtsC．plansD．dinner
21．A．wellB．lateC．hardD．ludly
22．A．angryB．srryC．happyD．upset
23．A．justB．seldmC．stillD．als
24．A．lessnB．lectureC．schlD．picture
25．A．enjyableB．similarC．imprtantD．big
三、阅读理解
A
26．______ are NOT mentined in the passage.
A．SmartphnesB．Smart CarsC．Ggle GlassesD．Smartwatches
27．Smartwatches are ______ than smartphnes accrding t the passage.
A．smarterB．mre fashinableC．lighterD．mre cnvenient
28．There are ______ main features abut Ggle Glass.
A．3B．4C．5D．6
29．Which f the fllwing descriptin is true fr Ggle Glass?
A．Yu can use it t recrd clear vides.B．It is easy t get lst by using the glasses.
C．It is as heavy as a nrmal pair f glasses.D．Yu must use yur hand t cntrl glasses.
30．Yu might find this passage in a ______.
A．stryB．cartnC．science magazineD．sprts shw
B
With the rapid develpment in science and industry, ur wrld has changed a lt. Many new things have appeared in ur daily life. These make ur life mre cnvenient and make ur cmmunicatin easier.
Cmputers are very imprtant t ur mdern life. Fr example, sme peple hardly g t the shp in their spare time but they buy things n the Internet instead. They think the prices f different kinds f clthes r living things are lwer than thse in shpping centers and huge markets. What’s mre, their qualities are the same. At the same time, peple can watch mvies by the internet instead f ging t the cinema. Peple living r wrking in different places can see and talk with each ther by cmputers, t. Sme peple are glad abut these new ways f shpping and cmmunicatin.
Anther example, cmputers can help us imprve ur reading a lt. Sme peple needn’t read bks made f paper. Instead, they read them n small pcket cmputers because the cmputers can keep many different bks in them at the same time. They dn’t need t turn lts f pages and paper is saved as well. Mre and mre electrnic bks are being used.
根据材料内容选择最佳答案。
31．Frm the secnd paragraph we can knw that cmputers are used fr ________.
A．buying things, watching mvies and talking with peple.
B．lking up prices, wrking at hme and imprving ur reading.
C．playing games, watching mvies and buying things.
D．shpping, reading and learning.
32．The underline wrds mean ________ in Chinese.
A．精选书B．电子书C．课外书D．纸质书
33．What are the advantages f buying things by cmputers?
A．The prices are lwer but the qualities are the same.
B．We can buy shes and tys f the latest types.
C．We can see and talk with thers at the same time.
D．The fd is fresh and the price is lw.
34．Which f the fllwing is True?
A．The bks n the cmputers are expensive.
B．Cmputers are nt necessary in ur mdern life at all.
C．Cmputers can help us imprve ur reading a lt.
D．Mst peple are tired f these new ways f shpping and cmmunicating.
35．Accrding t the passage, we can infer that ________.
A．Cmputers are used in ur daily life
B．Cmputers can take the place f supermarkets and bkstres
C．Cmputers are bad fr ur life, we must give them up
D．Cmputers can d anything in mdem life
四、语法填空
This is Tammela Schl, a primary schl in Finland. The students are having a math class with their rbt teacher.
The “teacher” is 36 tiny, blue machine abut 25cm high, Reuters reprted. N matter when students have prblems, it helps them very 37 (patient) and never gets bred.
“The rbt can make students much 38 (active) in class than usual. I see Elias as ne f the 39 (tl) t get different kinds f practice and activities int the classrm,” a teacher tld Reuters.
In the past few years, the schl 40 (intrduce) fur rbt teachers, ne f whm is a language teacher that can speak 23 languages and dance t music. “ 41 is necessary t encurage kids t cme up 42 new ways t make use f technlgy in schl life,” the head f the schl 43 (add) in the interview.
The rbt teachers are used 44 (help) imprve learning. This desn’t mean that human teachers will lse their jbs. The rbts can teach well, 45 they are nt able t keep class in rder. The schl still needs human teachers.
五、补全对话
根据对话内容，从所给的七个选项中选出可以填入空白处的最佳选项。有两项多余。
A: Hell, Mike! Have yu heard f Inventrs’ Day?
B: 46 What is that?
A: It is held t help peple remember inventrs.
B: 47
A: Well, different cuntries celebrate it n different days f the year.
B: Such as?
A: 48 It is the birthday f the inventr Hedy Lamarr.
B: Oh, I knw her. 49
A: Yes. In the USA, it is knwn as Natinal Inventrs’ Day. 50
B: I remember the great inventr Thmas Edisn was brn n that day.
A: That’s right. Yu have a gd memry.
A．When is it celebrated?
B．She was als an actress.
C．Sme inventins are useful.
D．N, I have never heard f it.
E．It is celebrated n February 11.
F．Thmas Edisn is really a great inventr.
G．Inventrs’ Day in the German-speaking cuntries is celebrated n Nvember 9.
参考答案：
1．C
【详解】句意：5月17日至19日，福建博物馆举办了各种活动，庆祝国际博物馆日。
考查被动语态。主语activities和hld“举行”之间是动宾关系，应用被动语态be dne。故选C。
2．B
【详解】句意：在三个灵魂拜访了史克鲁奇之后，老人意识到了怀着感激之心生活的重要性。
考查被动语态。分析句子可知，主语the ld man和make“使，让”之间是被动关系，此处用被动语态be dne，变为被动语态时，需把动词不定式符号t还原，即be made t d sth.。故选B。
3．B
【详解】句意：——为什么我从来没见过这种车?——因为它是上个月被那家汽车厂生产的。
考查一般过去时的被动语态。根据“last mnth.”可知，时态是一般过去时，且车是被汽车厂生产的，即car与prduce之间是被动关系，因此用一般过去时的被动语态。故选B。
4．C
【详解】句意：——你的地址刚才没记下来。你能再说一次吗？——没问题。在十五号大街。
考查一般过去时的被动语态及动词短语。isn’t writing dwn没有被写下，现在进行时；hasn’t put dwn没有放下，现在完成时；wasn’t taken dwn没有被记下，一般过去时被动语态。根据“just nw”可知，时态为一般过去时，主语Yur address和谓语之间是被动关系，其构成为was/were+过去分词。故选C。
5．C
【详解】句意：——Jim，你的父母喜欢乡村音乐吗？——不仅我爸爸喜欢，我妈妈也喜欢。他们都喜欢乡村音乐。
考查并列连词。“两者都”，谓语动词用复数；“既不……也不……”，谓语动词遵循就近原则； Nt als...“不仅……而且……”，谓语动词遵循就近原则。根据“They bth like cuntry music.”可知，他们两人都喜欢乡村音乐，排除选项B；谓语动词likes是第三人称单数，所以用Nt als...。故选C。
6．D
【详解】句意：当我被要求处理这个问题时，我没有回答。
考查一般过去时的被动语态。was asking用于过去进行时；asked用于一般过去时；am asked一般现在时的被动语态；was asked一般过去时的被动语态。根据didn’t可知是一般过去时，又因为主语I“我” 与动词ask“问”之间是被动关系，故要用一般过去时的被动语态，故选D。
7．D
【详解】句意：去年公园里种了很多花。
考查被动语态。根据“last year”可知，此处用一般过去时，主语与动词plant之间是被动关系，所以此处用一般过去时被动语态，故选D。
8．B
【详解】句意：上个月我们学校邀请了许多名人来庆祝建校100周年。
考查动词时态和语态。主语peple与动词invite之间是动宾关系，所以用被动语态，结合“last mnth”可知，用一般过去时的被动语态（was/were dne），故选B。
9．A
【详解】句意：2022年卡塔尔世界杯的“中国制造”理念引起了全世界的关注。
考查被动语态。句子所考查的核心结构是：catch ne’s attentin，意思是“引起某人的注意”，此时句子的主语是名词attentin和动词catch之间是被动关系，再根据时间状语“2022年卡塔尔世界杯”可知，需要用一般过去时，因此选择使用一般过去时的被动语态。故选A。
10．D
【详解】句意：在我们的老师解释之前，很少有学生能理解这个句子。
考查时态和语态。explains解释，第三人称单数形式；explained一般过去时；was explaining过去进行时；was explained一般过去时被动语态。根据“Few students culd understand the sentence”可知，时态为一般过去时，it是主语，和explain之间是被动关系，故应用一般过去时的被动语态，结构为was/were+过去分词。故选D。
11．A 12．C 13．A 14．D 15．B 16．B 17．A 18．D 19．C 20．C 21．A 22．C 23．D 24．B 25．D
【导语】本文主要介绍了纳塔利制作了一个名为“Sit With Us”的软件来帮助学生们找到一起吃午饭的人。
11．句意：你想和某人同桌，但你不确定他们是否友好。
but但是；s因此；fr为了；r否则。“想要与某人坐一张桌子”与“不确定他们是否友好”之间是转折关系，用but表转折。故选A。
12．句意：纳塔利解决这个问题的方法是创建一个应用程序。
curse课程；habit习惯；methd方法；questin问题。根据“t create an app”可知这是解决问题的方法。故选C。
13．句意：她发现很难交到新朋友，每天午餐时都得找新桌子。
search fr寻找；fix up修理；give ut分发；get away frm逃离。根据“She fund it difficult t make new friends”可知交不到朋友，吃午餐要找没人的新桌子。故选A。
14．句意：如果她一个人坐着，她会感到孤独。
in public公开地，当众；in a hurry匆忙；n time准时；by herself独自。根据“she felt lnely”可知感到孤独应是独自坐着。故选D。
15．句意：但如果她请求加入别人而被拒绝，她会感到尴尬。
received接收；refused拒绝；discussed讨论；believed相信。根据“she felt embarrassed”可推出想要加入别人但被拒绝了。故选B。
16．句意：她创建了一个午餐计划应用程序，帮助像她这样的学生找到一起吃午餐的人。
us我们；her她；it它；them他们。根据上文多次提到“she”可推出是像她一样的学生。故选B。
17．句意：这款名为Sit With Us的应用程序很简单。
simple简单的；cheap便宜的；private私人的；nisy喧闹的。根据“This allws students t make ... nline instead f face-t-face.”可知这款应用程序很简单。故选A。
18．句意：其他学生可以打开应用程序并接受邀请。
send发送；miss错过；make制作；accept接受。根据“They can then use the app t decide when and where t ...”可知接受了邀请才有确定时间和地点的可能。故选D。
19．句意：然后，他们可以使用该应用程序来决定见面的时间和地点。
treat对待；study学习；meet见面；exercise锻炼。根据“find peple t have lunch with”可知一起吃午餐需要见面。故选C。
20．句意：这使得学生可以在网上制定计划，而不是面对面。
truble麻烦；reprts报告；plans计划；dinner晚餐。根据“They can then use the app t decide when and where t ...”可知此处指在网上制定计划。故选C。
21．句意：这就是它如此有效的原因：它降低了被拒绝的风险，以及随之而来的尴尬。
well好；late晚；hard努力地；ludly大声地。根据“it lwers the risk f being refused, and the embarrassment that ges alng with it”可知这款软件很好。故选A。
22．句意：纳塔利很高兴看到人们积极回复她的应用程序，尤其是那些遭受欺凌的人。
angry生气的；srry对不起的；happy高兴的；upset难过的。根据“peple are replying t her app actively—especially thse wh suffer frm bullying”可知软件受欢迎纳塔利很高兴。故选C。
23．句意：她也出现在许多新闻报道中。
just仅仅；seldm极少；still依旧；als也。根据“Sn after she made her app available t the public, she wn a prize fr it.”可知赢得了奖项，也出现在新闻报道中。故选D。
24．句意：在她的演讲中，娜塔莉想让人们知道，你不必做什么大事来改变生活。
lessn课；lecture演讲；schl学校；picture画作。根据“Natalie was even asked t speak at a university.”可知要演讲。故选B。
25．句意：在她的演讲中，纳塔利想让人们知道，你不必做什么大事来改变生活。
enjyable令人愉快的；similar相似的；imprtant重要的；big大的。根据“Smetimes, a simple thing—like having a friend t enjy lunch with—can make all the difference”可知不必做什么大事。故选D。
26．B 27．D 28．B 29．A 30．C
【导语】本文是一篇说明文，主要介绍了一些可穿戴的智能产品。
26．细节理解题。根据第二段中的“Cmpared with smartphnes, smartwatches are mre cnvenient.”及第二幅图右侧的“Ggle Glass”可知，本文提到了智能手机、智能手表和谷歌眼镜，没有提到智能汽车。故选B。
27．细节理解题。根据第二段中的“Cmpared with smartphnes, smartwatches are mre cnvenient.”可知，与智能手机相比，智能手表更方便。故选D。
28．细节理解题。根据“Main features: *Users can knw the present events such as weather, the past events such as phne calls, and phts by tuching the tuchpad. *Users can take phts, recrd 720 p HD vides and bradcast them live (现场直播) n the Internet. *There is a GPS system in the glasses. If yu get lst, yu can ask ‘Where am I?’ Then it will tell yur current lcatin. And it can als give yu directins right in frnt f yu. *Yu can cntrl the glasses hands-free by using vice cntrl.”中的*有四个可知，谷歌眼镜有四种主要特征。故选B。
29．细节理解题。根据“Users can take phts, recrd 720 p HD vides and bradcast them live (现场直播) n the Internet.”可知，可以用谷歌眼镜来录制清晰的视频，故选A。
30．推理判断题。根据“Wearable gadgets (可穿戴设备) are high-tech prducts.”及全文内容可知，本文主要介绍了一些可穿戴的智能产品，因此可推断，我们可能会在科学杂志中读到这篇文章。故选C。
31．A 32．B 33．A 34．C 35．A
【导语】本文主要讲述了电脑对现代生活的影响。
31．细节理解题。根据“Fr example, sme peple hardly g t the shp in their spare time but they buy things n the Internet instead.”，“What’s mre, their qualities are the same. At the same time, peple can watch mvies by the internet instead f ging t the cinema. Peple living r wrking in different places can see and talk with each ther by cmputers, t.”可知人们用电脑来购物、看电影和聊天，故选A。
32．词义猜测题。根据“Instead, they read them n small pcket cmputers because the cmputers can keep many different bks in them at the same time. They dn’t need t turn lts f pages and paper is saved as well.”可知人们在小型袖珍电脑上阅读，因为电脑可以同时保存许多不同的书。人们不需要翻很多页，纸张也可以节省下来，故可推测划线单词electrnic bks表示的是“电子书”，故选B。
33．细节理解题。根据“They think the prices f different kinds f clthes r living things are lwer than thse in shpping centers and huge markets. What’s mre, their qualities are the same.”可知人们认为在电脑上购物的价格比购物中心和大市场的便宜，但是质量是一样的，故选A。
34．细节理解题。根据“Anther example, cmputers can help us imprve ur reading a lt.”可知电脑能帮助我们提高阅读，故选C。
35．推理判断题。根据“Cmputers are very imprtant t ur mdern life.”和下文介绍的电脑在日常生活中被用来购物、阅读等，可知电脑被用于日常生活，故选A。
36．a 37．patiently 38．mre active 39．tls 40．has intrduced 41．It 42．with 43．added 44．t help 45．but
【导语】本文介绍了芬兰的一所小学使用机器人老师上课，让学生们变得更加活跃、积极，提高了学生们的学习状态。但同时机器人老师也有它的不足之处。
36．句意：据路透社报道，这个“老师”是一个小的、蓝色的机器，大约25厘米高。a不定冠词，修饰可数名词单数，表示泛指“一个……”。根据句意和句子结构可知，这个空后的名词“machine”是单数，且这里表示泛指，故填a。
37．句意：不管什么时候学生们有问题，它都会非常耐心的帮助他们，从来不会感到厌烦。根据句子结构可知，空处应填副词来修饰句子的谓语动词“helps”，应用patient的副词形式，故填patiently。
38．句意：这个机器人使学生们变得比平常更加的活跃。根据句意及句中的“than”可知，这里表示与平时状态的一个对比，应用形容词的比较级形式，故填mre active。
39．句意：我认为Elias是一种把实践和活动融入课堂的工具。根据“ne f the...”表示“……之一”，后面要跟名词的复数，故填tls。
40．句意：到目前为止，这个学校已经引进了四个机器人老师。根据句意和句中的时间状语“S far”可知，要用现在完成时，结构是“have/has+过去分词”，主语是“the schl”，为单数，故填has intrduced。
41．句意：有必要鼓励孩子们想出新的办法在学校生活中利用科技。根据“…is necessary t encurage kids t cme up”可知这句话中使用的是it的固定句型：“It is+形容词+t d sth.”，意为“做某事是……的”，其中“It”是形式主语，真正的主语是动词不定式。故填It。
42．句意：有必要鼓励孩子们想出新的办法在学校生活中利用科技。根据“cme up…new ways”可知这里考查的是一个固定短语cme up with，意思是“想出，提出”，故填with。
43．句意：校长在采访中补充说……。根据“In the past few years”及文意可知，这个对校长采访时是已经发生的事情了，所以这里应用一般过去时态，故填added。
44．句意：机器人老师被用来帮助提高学习。根据“are used”可知此处考查短语be used t d sth.“被用来做某事”，指的是机器人老师被用来帮助提高学习，因此这里填动词不定式t help。故填t help。
45．句意：这些机器人可以教得很好，但是他们不能够维持课堂秩序。根据空前的“teach well”和空后的“they are nt able t keep class in rder”可知前后是转折关系，故这里填连词but“但是”。故填but。
46．D 47．A 48．G 49．B 50．E
【导语】本文是两人关于发明家节日的对话。
46．根据“Have yu heard f Inventrs’ Day?”和“What is that?”可知，B不知道这个节日，选项D“不，我从来没听说过。”符合语境，故选D。
47．根据“Well, different cuntries celebrate it n different days f the year.”可知，是问庆祝节日的时间，选项A“什么时候庆祝？”符合语境，故选A。
48．根据“different cuntries celebrate it n different days f the year.”和“Such as?”可知，举例说明不同的国家在一年中的不同日子庆祝它。选项G“德语国家在11月9日庆祝发明家日。”符合语境，故选G。
49．根据“Oh, I knw her”可知，此处是关于发明家Hedy Lamarr，选项B“她也是一名演员。”符合语境，故选B。
50．根据“In the USA, it is knwn as Natinal Inventrs’ Day. ”可知，此处应介绍在美国庆祝的时间。选项E“它在2月11日庆祝。”符合语境，故选E。
列提纲
写句子
推销你的新发明
引出话题
(1)This special pen was invented by Liu Jie. It has three clrs and is used fr taking ntes quickly. It is very useful if yu have a lt t write dwn.(这种特殊的钢笔是刘杰发明的。它有三种颜色，用于快速记笔记。如果你有很多东西要写，这是非常有用的。).
用途、原理、特色、价格
The pen cmes with a micrchip that can stre a list f cmmn wrds that yu will use. Yu can prgram the wrds yu will use ften int the micrchip's memry, then assign a shrt frm t each wrd. When yu are writing, yu just need t write the shrt frms with the pen, press a buttn n the pen and all shrt frms will change int the actual wrds. The micrchip can cntain up t 50 wrds and yu can make changes t the list f wrds whenever yu need t.(笔带有一个微芯片，可以存储你将要使用的常用单词列表。您可以将经常使用的单词编入微芯片的内存，然后为每个单词指定一个简短的形式。当你写作时，你只需要用钢笔写下简短的形式，按下笔上的一个按钮，所有的简短形式就会变成实际的单词。微芯片最多可以包含50个单词，您可以随时更改单词列表。).
(3)Yu must want t knw hw much my new inventin is. It’s 500 yuan. It’s nt very expensive, is it?(价格).
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(4)I think the pen is s cnvenient and helpful .I believe yu will als be happy with it.They are ging t change yur hmewrk cmpletely .(我认为这支笔是如此方便和有用。我相信你也会很高兴拥有它。他们将彻底改变你的作业。)
Wearable gadgets (可穿戴设备) are high-tech prducts. They are small and can be wrn n yur bdy, just like a nrmal fashin accessry (首饰).The smartwatch is ne f them.
Cmpared with smartphnes, smartwatches are mre cnvenient. They wrk like smartphnes, but they free yur hands. If yu want t send a message r email, just tell yur watch t send it and it’s dne!
Hwever, smartwatches als have sme prblems. Sme peple dn’t think they lk very fashinable. If peple dn’t knw yu are wearing them, they might think yu are crazy fr talking t yur wrist (手腕).
Let’s take a lk at anther ne f the mst ppular wearables. It is nt a watch but a pair f glasses.
Ggle Glass (Ggle, US)
Battery life: abut five hurs n ne charge
Weight: lighter than a nrmal pair f sunglasses
Price: $ 1,500
Main features:
*Users can knw the present events such as weather, the past events such as phne calls, and phts by tuching the tuchpad.
*Users can take phts, recrd 720 p HD vides and bradcast them live (现场直播) n the Internet.
*There is a GPS system in the glasses. If yu get lst, yu can ask “Where am I?” Then it will tell yur current lcatin. And it can als give yu directins right in frnt f yu.
*Yu can cntrl the glasses hands-free by using vice cntrl.