Unit 1（A卷·知识通关练）
一、单项选择
1．There are three ________ and two ________ on the soccer team.
A．Chineses; German B．Chinese; Germans
C．Chineses; Germans D．Chinese; German
2．To draw ________ attention, the boy made faces.
A．I B．me C．my D．mine
3．He is ________ honest boy. He likes playing ________ basketball.
A．a; an B．an; a C．a; a D．an; /
4．The three Shenzhou-13 astronauts returned to Earth safely ________ April 16, 2022.
A．on B．in C．at D．to
5．I don’t know ________.
A．where does he live B．where he live
C．where he lives D．where he does live
6．Bill played computer games instead of ________ for the coming English exam last night.
A．prepare B．to prepare C．preparing D．prepared
7．—Football ________ by the British over 100 years ago.
—That’s why football is one of ________ popular games there.
A．was invented; the most B．invented; more
C．was invented; more D．invented; the most
8．I don’t think Tom works ________ before.
A．as careful as B．as carefully as
C．as more careful as D．as more carefully as
9．—You ________ pale. Are you feeling all right
—I’m OK. Don’t worry.
A．look B．taste C．smell D．sound
10．The editors ________ decide the title of the newspaper as soon as possible.
A．could B．might C．may D．ought to
11．He has never visited the Great Wall, ________
A．hasn’t he B．has he C．does he D．doesn’t he
12．This listening material, together with its CD-ROMs, ____________well.
A．sells B．sell
C．is sold D．are sold
13．—I never go swimming alone.
—Me ________ . That’s too dangerous.
A．too B．either C．also D．and
14．Do enough exercise every day, ________ you will be stronger.
A．but B．or C．and D．for
15．The app “MAYI” encourages people to give away the clothes ________ they don’t need to the poor.
A．what B．whom C．who D．that
二、短文选词填空
将下列单词或词组填入空格。每空格限填一词，每词只能填一次
A. afraid B. full of C. inside D. made friends with E. excited F. for a while
The journey of a plastic bottleI am a plastic bottle. A week ago, I was on a supermarket shelf. I had a normal life, the same as all my brothers and sisters—other bottles which were 16 water. I felt really happy. Then a tall woman picked me up and put me in her basket! The woman took me home and put me in the fridge. It was cold, but I soon 17 the cans and bottles in it. However, only a few hours later, she took me out of the fridge and drank the water 18 me. Then she threw me into a dustbin. I have never felt so 19 and lonely in my life.
Early the next morning, a man took me out of the dustbin. He threw me and the other rubbish into the back of a truck. There were so many horrible smells. Then I was pushed together with the rest of the rubbish. Soon I was completely flat（平的）. I cannot believe how thin I became.
I slept 20 . When I woke up, I found myself in a terrible place. Everything around me was ugly and had terrible smells. I was crazy. I kept hoping that I would be moved somewhere else.
三、用所给单词的正确形式填空
Complete the sentences with the given words in their proper forms （用括号中所给单词的适当形式完成下列句子）:
21．The singer was known by people through many of his music on You Tube. （video）
22．Joan is as heavy as Tina. They have the same （weigh）.
23．My mum is usually buys some bread in a supermarket . (near)
24．Peter’s ambition is to be an like his father. （architecture）
25．Playing badminton with Rose at weekends is my outdoor activities. （favour）
26．They were very when they heard from their penfriends for the first time. （excite）
四、句型转换
Complete the following sentences as required （根据所给要求，完成下列句子）:
27．I have to finish the extra homework tonight. （改为否定句）
I to finish the extra homework tonight.
28．There is plenty of water in the water tank. （对划线部分提问）
water is there in the water tank
29．Kitty hopes she will be a singer in 20 years’ time. （保持句意基本不变）
Kitty hopes a singer in 20 years’ time.
30．a lot of time, spent, practicing, he, every day, playing the piano （连词成句）
.
How terrible it would be if there was fire! Today is November 9. It’s time for us to learn a lot more about fire, especially what to do if we are caught in a fire：
1 Shout out
If you smell smoke or see fire, shout out “Fire”！Shout as loudly as you can, because people may be asleep.
2 Call 119
Never try to put out the fire yourself, even if it is a very small one! Get help from your parents or call 119.
3 Keep down close to the floor
If there is a lot of smoke in your room, keep down close to the floor.
4 Test the door
Test the door before you open it. If the door is cool, open it carefully. If the door is hot, do not open it！Try to find a different way out.
5 Get out
If you can, get out of your home as soon as possible.
6 Don’t use the lift
Never use the lift during the fire. It may also go wrong.
7 Don’t go back
Never go back into a burning building！
31．The passage is mainly about ________.
A．how to look after yourself when on fire
B．what to do when you are caught in a fire
C．when to leave the burning place
D．why to call 119 when it is on fire
32．When people are asleep, what will you do when fire breaks out？
A．Call for help as quickly as you can.
B．Wake your parents up fast.
C．Shout out “Fire!” as loudly as you can.
D．Run as fast as you can.
33．Why shouldn’t you use the lift when fire breaks out
A．Because taking the lift is so slow.
B．Because the fire can burn you.
C．Because the lift may keep you safe.
D．Because the lift may not work.
34．When a fire is burning, you test the door to ________.
A．find a better way out
B．notice the fire clearly
C．call for a much quicker help
D．see if it is closed
35．If you leave an expensive thing at home, you should ________.
A．not go back
B．keep down close to the floor
C．not get out
D．try your best to get it
六、完形填空
The book Frindle is about a troublemaker named Nick who makes up a new word. When Nick asks Mrs Granger where all the words in the dictionary comes from, she makes Nick write a report about it! The report makes Nick wonder if he could invent his own word. Nick’s classmate Janet drops her pen, and he 36 and calls it a“frindle”. Pretty soon, everyone in class is saying “frindle” instead of pen.
A war begins between Mrs Granger and Nick. Nick likes to challenge the rules, but he’s not all bad. He is creative and has lots of 37 . It’s too bad that people think something is wrong just because it’s new and different. Mrs Granger is too hard on Nick and the way she treats him is unfair.
The kids in Nick’s class protect him by actions. They are 38 willing to stay after school and be punished for saying “frindle”.
Mrs Granger wants to stop Nick from spreading his word. But the “frindle” is unstoppable. People across the country are saying it. Nick gets a lot of 39 for inventing this word.
The book has a very 40 ending. Nick is in college, and he is rich from all the money he has made off his word. Mrs Granger sends him a dictionary that has the word “frindle” and a letter about how she is proud of him. She ends up being the most interesting character in the book!
Everyone should read Frindle 41 it’s such a great book. Kids who are troublemakers would especially like this book.
36．A．picks it up B．picks it out C．looks it up D．finds it out
37．A．inventions B．suggestions C．ideas D．stories
38．A．also B．even C．only D．never
39．A．advice B．attention C．discussion D．experience
40．A．amusing B．serious C．surprising D．terrible
41．A．if B．unless C．until D．because
Trees are one of the oldest “citizens” of the Earth. They keep our air clean, reduce noise pollution, improve water quality and provide food and building materials.
Just like us, trees change a lot as they grow. At 1 to 3 years old, young trees learn how to protect t 42 . For example, many trees grow thorns to w 43 animals not to go near.
When trees are 4 years old, they begin to grow very quickly and become strong enough to face challenges later in life. At the age of 15, trees become young adults. They grow more slowly and begin to produce flowers and fruit. It is not until the tree is 20 to 25 years old that it becomes a real adult. The tree r 44 its largest size. Not only does the adult tree give us shade, oxygen and natural beauty, but it is a 45 a great place for us to nap, read a book, listen to music or sip tea. I 46 the adult tree receives proper care, it will continue to live healthily for many years.
Gradually, trees begin to grow older and older and even die. At this time, they still have their important place i 47 nature. When a tree becomes hollow or part of it becomes dead, it provides a home to small animals and is a source of food for many o 48 animals.
八、阅读回答问题
根据短文内容, 回答问题。
February 8 was Gu Ailing’s day, when she won a gold medal（金牌）in the women’s freestyle skiing（自由式滑雪）big air event at the Beijing 2022 Winter Olympics. Gu made history that day. Besides, when she got gold, Gu gave Ledeux a warm hug. It was also the first time a Chinese athlete（运动员）took part in the event and won gold.
Gu is called the “Snow Princess” by many people. It was her first time at the Olympics. After the first two rounds, Gu was falling far behind her French competitor Tess Ledeux. However, she tried hard and made it in her last jump.
In interviews after the race, Gu said she took part in the Winter Olympics not to defeat（打败）her competitors but to do her best. “I’m not skiing just for the Olympic Games. Yet, the gold medal is not the only reason behind her increasing popularity. Only when you do the things you love can you put all your heart into them,” said Gu.
Though she got worldwide fame, Gu said she’d continue living her life like any other teenager. “I’ll still get to call my grandma after this, hang out with my friends and play games on my phone. I’m still a common 18-year-old girl who just loves freestyle skiing.”
Gu said she wanted to tell young people, especially girls who are interested in winter sports, to “go for it and try to push the boundaries（界限）as much as they can”.
49．How old do you think Gu Ailing is according to the passage
50．Why was February 8 Gu Ailing’s day
51．Did Gu Ailing join in the Olympics for the second time
52．What do people call Gu Ailing
53．What would Gu Ailing do after she got worldwide fame
九、材料作文
54．假设你是王红，你的美国朋友Mike想了解一下北京、上海这两座城市；请你根据下表提示内容并结合所学地理知识给Mike写一封电子邮件，向他介绍一下这两座城市。
提示：
北京 1.中国的首都。 2.人口约2100万, 面积约16410平方千米。 3.有许多名胜。
上海 1.中国著名的现代城市。 2.人口约2400万, 面积约6430平方千米。 3.2010年曾举办世博会（The World Expo）。
要求：1.文章应包含提示内容，可适当发挥, 但不要逐词翻译；2.词数80左右。
Dear Mike,
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours
Wang Hong
试卷第1页，共3页
试卷第1页，共3页
参考答案：
1．B
【详解】句意：足球队有三个中国人和两个德国人。
考查名词复数。Chinese“中国人”，单复数同形；German“德国人”，复数是Germans。three和two后都跟名词复数，故选B。
2．C
【详解】句意：为了引起我的注意，那个男孩做了些鬼脸。
考查代词。I我，主格形式；me我，宾格形式；my我的，是形容词性物主代词；mine我的（东西），是名词性物主代词。修饰名词attention，用形容词性物主代词，故选C。
3．D
【详解】句意：他是一个诚实的男孩。他喜欢打篮球。
考查冠词辨析。根据“He is ... honest boy.”可知，此处泛指他是一个诚实的男孩，“honest”是以元音音素开头的单词，不定冠词用an；再根据“He likes playing ... basketball.”可知，球类名词前不用冠词，play basketball“打篮球”，故选D。
4．A
【详解】句意：2022年4月16日，神舟十三号的三名宇航员安全返回地球。
考查介词辨析。on后接具体某一天等；in后接年、月、季节等；at后接具体时刻等；to离，差。根据“April 16, 2022”可知此处表示在具体的2022年4月16日这一天，用介词on。故选A。
5．C
【详解】句意：我不知道他住在哪里。
考查宾语从句。宾语从句中的语序用陈述语序，排除A选项；从句主语是第三人称单数，动词用三单形式，C选项符合，D选项形式错误，故选C。
6．C
【详解】句意：比尔昨晚玩电脑游戏而不是准备即将到来的英语考试。
考查非谓语动词。instead of“代替”，of是介词，后接动名词，instead of doing sth.“代替做某事”，故选C。
7．A
【详解】句意：——足球是英国人在100多年前发明的。——这就是为什么足球是那里最受欢迎的运动之一。
考查语态和形容词。invent“发明”，the most“最”，more“更多的”，主语football与谓语invent之间是被动关系，因此用被动语态，排除BD两项。one of the+形容词的最高级+复数名词，表示“最……的……之一”，故选A。
8．B
【详解】句意：我认为汤姆不如以前工作认真。
考查形容词和副词。as+形容词原级/副词原级+as表示“和……一样……”，排除CD两项，careful“认真的”，是形容词；carefully“认真地”，是副词。修饰动词work，用副词。故选B。
9．A
【详解】句意：——你看起来脸色苍白。你感觉还好吗？——我很好。别担心。
考查系动词辨析。look看起来；taste尝起来；smell闻起来；sound听起来。根据下文“I’m OK. Don’t worry.”可知，此处是“你看起来脸色苍白”，故选A。
10．D
【详解】句意：编辑们应该尽快决定报纸的标题。
考查情态动词辨析。could能；might可能；may可以；ought to应该。根据 “...decide the title of the newspaper as soon as possible.”可知应是建议尽快做决定，故选D。
11．B
【详解】句意：他从来没有参观过长城，不是吗？
考查反意疑问句。反意疑问句遵循“前肯后否，前否后肯”，根据“has never visited”可知，此处是现在完成时，是否定形式，后面疑问部分用肯定形式has he，故选B。
12．A
【分析】
【详解】句意：这些听力材料，连同它的光盘卖得很好。
考查主谓一致及语态。根据句意，东西卖的好，表示现在的一种状态，故用一般现在时。并且当sell后接副词时，其主动形式表示被动含义。together with 连接几个主语时，谓语动词要与最前面的主语保持一致， 即与 listening material 保持一致，所以sell用单数形式；故答案选A。
【点睛】表示事物性质或特点的，用主动形式表示被动语态。此处表示这个听力材料卖得好，sell可用作及物动词和不及物动词，其主语一般是指人，但是在表示某物卖得不错时，要用主动语态表示被动。together with 连接几个主语时，谓语动词要与最前面的主语保持一致，即采用就远原则，本句是与listening material保持一致，所以谓语动词用单数形式。故答案选A。
13．B
【详解】句意：——我从来不会独自去游泳。——我也不会。那样太危险了。
考查副词。too也，用于肯定句中；either两者中选其一，用于否定句中表示“也”；also也；and和，并列连词。根据答句中“That’s too dangerous.”可知，答句表示否定，即“我也不”，否定句中的“也”用“either”来表示，则此处应用句式“Me either.”，相当于“I don’t go swimming alone, either.”。故选B。
14．C
【详解】句意：每天做足够的运动，你会更强壮。
考查连词辨析。but但是；or否则；and和；for因为。“每天做足够的运动”与“你会更强壮”之间是顺承关系，此处用“祈使句+and+陈述句”结构。故选C。
15．D
【详解】句意：这款名为“MAYI”的应用鼓励人们把自己不需要的衣服送给穷人。
考查定语从句关系词。根据“the clothes ... they don’t need”可知此处是定语从句，先行词“the clothes”指物，且在从句中作宾语，用that引导定语从句。故选D。
16．B 17．D 18．C 19．A 20．F
【导语】本文主要讲述了一个塑料瓶子的旅程。
16．句意：其他装满水的瓶子。根据“I am a plastic bottle.”可知，瓶子用来装水，be full of“装满”，固定搭配。故选B。
17．句意：天气很冷，但我很快就和里面的瓶瓶罐罐成了朋友。根据“The woman took me home and put me in the fridge.”可知，这个瓶子和冰箱里的瓶瓶罐罐成了朋友，结合选项，made friends with符合句意。故选D。
18．句意：然而，仅仅几个小时后，她就把我从冰箱里拿出来，喝了我体内的水。根据“she took me out of the fridge”可知，她喝掉了瓶子里的水，结合选项，inside符合句意。故选C。
19．句意：我一生中从未感到如此害怕和孤独。根据“felt”可知，需要一个形容词；再者根据“lonely”可知，是感到如此害怕和孤独，结合选项，afraid符合句意。故选A。
20．句意：我睡了一会儿。根据“When I woke up”可知，这个瓶子睡了一会儿，结合选项，for a while符合句意。故选F。
21．videos
【详解】句意：这位歌手通过YouTube视频网上的许多音乐录影带为人们所熟知。根据“many of”可知，空处应用名词复数，“video”“视频”，名词，其复数形式是“videos”。故填videos。
22．weight
【详解】句意：琼和蒂娜一样重。它们的重量一样。the same+名词，表示“相同的……”。根据上文“Joan is as heavy as Tina.”可知下文是说相同的重量。weight名词，“重量”。根据题意，故填weight。
23．nearby
【详解】句意：我妈妈通常在附近的超市买些面包。根据“My mum is usually buys some bread in a supermarket ”可知，此处指在超市附近，“near”“在附近”介词，改为副词“nearby”“附近”。故填nearby。
24．architect
【详解】句意：彼得的志向是成为像他父亲一样的建筑师。architecture名词，“建筑学”。根据“like his father.”可知，这里是成为一名建筑师。architect名词，“建筑师”，an修饰名词的单数形式。故填architect。
25．favourite
【详解】句意：周末和罗斯打羽毛球是我最喜欢的户外活动。此空修饰名词outdoor activities，应填形容词作定语，favourite形容词“最喜欢的”。故填favourite。
26．excited
【详解】句意：当他们第一次收到笔友的来信时，他们非常激动。根据下文“when they heard from their penfriends for the first time.”可知，他们是非常激动的。这里用excite的形容词， excited“激动的”，人做主语。故填excited。
27． don’t have
【详解】句意：我今晚必须完成额外的家庭作业。这里是变成否定句，句子是一般现在时，主要是I，变成否定，应用助动词do+not+动词原形。故填don’t；have。
28． How much
【详解】句意：水箱里有很多水。划线部分是plenty of，water是不可数名词，这里用how much来提问。故填How；much。
29． to be
【详解】句意：Kitty希望她在20年后成为一名歌手。hope+that从句，可以转化成hope to do的形式。根据题意，故填to；be。
30．He spent a lot of time practicing playing the piano every day
【详解】根据句末标点可知，此句为陈述句。分析所给单词：he人称代词主格，作主语；spend+时间+doing sth.“花费时间做某事”，spent a lot of time practicing“花很多时间练习”；practice doing sth.“练习做某事”；playing the piano“弹钢琴”；every day“每天”，作时间状语。故填He spent a lot of time practicing playing the piano every day“他每天花很多时间练习弹钢琴”。
31．B 32．C 33．D 34．B 35．A
【导语】本文主要介绍了陷入火灾的解决方法。
31．主旨大意题。根据“especially what to do if we are caught in a fire：”可知文章主要介绍了当你陷入火灾时该怎么办，故选B。
32．细节理解题。根据“Shout as loudly as you can, because people may be asleep.”可知要尽量大声喊，因为人们可能睡着了。故选C。
33．细节理解题。根据“Never use the lift during the fire. It may also go wrong.”可知火灾期间切勿使用电梯。它也可能出错。故选D。
34．细节理解题。根据“Test the door before you open it. If the door is cool, open it carefully. If the door is hot, do not open it！Try to find a different way out.”（开门前先测试一下。如果门很冷，请小心打开。如果门是热的，不要打开它试着找到一条不同的出路。）可知当有火灾时，你测试门，以注意火情，故选B。
35．细节理解题。根据“Never go back into a burning building！”可知如果你把一件昂贵的东西留在家里，你不应该回去，故选A。
36．A 37．C 38．B 39．B 40．C 41．D
【导语】本文介绍《Frindle》这本书的大致内容。
36．句意：尼克的同学珍妮特掉了笔，他捡起来，称之为“frindle”。
picks it up捡起；picks it out挑选；looks it up查阅；finds it out查明。根据“Nick’s classmate Janet drops her pen”可知，笔掉了，所以要捡起来，故选A。
37．句意：他很有创造力，有很多想法。
inventions发明；suggestions建议；ideas想法；stories故事。根据“He is creative”可知，很有创造力，所以有很多想法，故选C。
38．句意：他们甚至愿意放学后留下来，因为说“frindle”而受到惩罚。
also也；even甚至；only只；never从不。根据“They are...willing to stay after school and be punished for saying “frindle”.”可知，此处是递进关系，“甚至”符合语境，故选B。
39．句意： 尼克因为发明了这个词而备受关注。
advice建议；attention注意；discussion讨论；experience经历，经验。根据“People across the country are saying it. Nick gets a lot of... for inventing this word.”可知，全国人民都在这么说，所以是因为发明了这个词而备受关注，故选B。
40．句意：这本书的结局很惊人。
amusing有趣的；serious严肃的；surprising惊人的；terrible糟糕的。联系上下文可知，老师开始很反对尼克说这个词，但是后来却成为了书中最有趣的角色，所以是令人意外的结局，故选C。
41．句意：每个人都应该读《Frindle》，因为这是一本很好的书。
if如果；unless除非；until直到；because因为。“it’s such a great book”是“Everyone should read Frindle”的原因，用because引导原因状语从句，故选D。
42．(t)hemselves 43．(w)arn 44．(r)eaches 45．(a)lso 46．(I)f 47．(i)n 48．(o)ther
【导语】本文主要介绍了树木的从小到大的生长过程以及对人类的贡献。
42．句意：在1到3岁时，小树学习如何保护自己。根据“protect”可知，此处指保护自己，由“your trees”可知，此处用反身代词themselves“它们自己”，故填(t)hemselves。
43．句意：例如，许多树木长出荆棘来警告动物不要靠近。根据“many trees grow thorns to”和“animals not to go near”并结合所给单词首字母可知，此处指警告动物别靠近，由空前的“to”可知，空缺处用动词原形warn“警告”，故填(w)arn。
44．句意：这棵树长到了最大。根据“it becomes a real adult”可知，此处指树到了最大尺寸，时态是一般现在时，主语“the tree”是第三人称单数，所以空缺处用动词reach“到达”的第三人称单数reaches，故填(r)eaches。
45．句意：成年树不仅给我们树荫、氧气和自然美景，而且它还是我们小憩、看书、听音乐或品茶的好地方。固定搭配not only…but also“不但……而且……”，故填(a)lso。
46．句意：如果成年树得到适当的照顾，它将继续健康地生活多年。“the adult tree receives proper care”是“it will continue to live healthily for many years”的条件，所以句子是if引导的条件状语从句，故填(I)f。
47．句意：在这个时候，它们在自然界中仍然有着重要的地位。根据“they still have their important place”可知，此处指要死的树在自然界中仍然有着重要的地位，in nature“在自然界”，故填(i)n。
48．句意：当一棵树中空或部分枯死时，它为小动物提供了家园，也是许多其他动物的食物来源。根据“is a source of food for many”和“animals”以及所给单词首字母可知，此处指树是许多其他动物的食物来源，other“其他的”，故填(o)ther。
49．I think she is 18 years old. 50．Because she won a gold medal and made history that day. 51．No, she didn’t. 52．Snow Princess. 53．She’d continue living her life like any other teenagers.
【导语】本文介绍了2022年在北京冬奥会获得历史性金牌的中国自由滑雪运动员——谷爱凌。
49．根据“I’m still a common 18-year-old girl who just loves freestyle skiing.”可知，谷爱凌18岁了。故填I think she is 18 years old.
50．根据“February 8 was Gu Ailing’s day, when she won a gold medal（金牌）in the women’s freestyle skiing（自由式滑雪）big air event at the Beijing 2022 Winter Olympics. Gu made history that day.”可知，2月8日是谷在冬奥会获得历史性金牌的日子。故填Because she won a gold medal and made history that day.
51．根据“It was her first time at the Olympics. ”可知，这是谷爱凌第一次参加奥运会。故填No, she didn’t.
52．根据“Gu is called the ‘Snow Princess’ by many people.”可知，谷爱凌被很多人叫作“雪公主”。故填Snow Princess.
53．根据“I’ll still get to call my grandma after this, hang out with my friends and play games on my phone. I’m still a common 18-year-old girl who just loves freestyle skiing.”可知，谷爱凌成名后会像其他青少年一样继续生活。故填She’d continue living her life like any other teenagers.
54．例文：
Dear Mike,
I’m very glad to tell you something about Beijing and Shanghai.
Beijing is the capital city of China. The population of Beijing is about 21 million. It covers about 16,410 square kilometres. There are lots of places of interest in Beijing, such as the Great Wall and the Summer Palace.
Shanghai is the biggest city in China. It is a modern city. There’re about 24 million people in Shanghai. It covers about 6,340 square kilometres. The World Expo was held in Shanghai in 2010. Have you ever heard of it
I hope you can visit China soon.
Yours,
Wang Hong
【详解】1.题干解读：该题目属于材料作文写作，要求按照所给的要点提示写一篇短文，介绍北京和上海两座大城市。注意写作时要点要齐全，同时也可进行合理而又紧扣主题的发挥。
2.写作指导：本文应该用第一、三人称来叙述；时态采用一般现在时；文章开头已给出，写作时，注意承接上文，根据要点提示具体介绍北京和上海的特点，人口，面积，并希望好友来中国参观；文中一定要包含题干中列出的所有要点；可以运用一些短语和常用句型为文章增添色彩；注意单词书写的准确度，语法运用的准确度，上下文注意连接的流畅度，以及逻辑合理。
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