内容正文:
©第6课时
话题分析
本单元话题为“永不言弃”,介绍了霍金等
身残志坚的人物凭借坚强意志克服困难、坚持梦
想的事迹,以及激励人心的奥林匹克精神。学会
运用before、after、.when、while、since、till、until、as
soon as和whenever引导的时间状语从句进行写
作,介绍榜样们“有志者事竟成”的经历,鼓励大
家永不放弃,为梦想奋进。
词汇积累
1.be diagnosed with被诊断出患有…(疾病)
2.rob sb of sth
剥夺(某人所需或应得之物)
3.stand in sb's way
妨碍某人,阻止某人
4.make it(to)
获得成功
5.live through sth
经历(灾难等)而幸存
经典范例
根据所给提示,写出Helen Keller的成长经
历,可适当发挥,词数100左右。
提示:1.1880年生于美国;6个月时,能说几
个词;2岁时,患病严重,失明、失聪或失语;6岁
时,用手指学习阅读;成年后,成为了著名作家;
代表作《我的人生故事》;1968年去世。
2.如何向她学习:努力学习;永不放弃;坚持
梦想。
思路点拨
开门见山
Helen Keller,a famous writer,...
介绍成
six months old ..at the age of two
长经历
…grew up…
学习
We can learn a lot ..Never give
其精神
up...Hold on to ..
画国
Helen Keller,a famous writer,was born in
America in 1880.When she was six months old,
she could say a few words.Unluckily,at the age of
two,Helen was badly ill,and lost her sight,hear-
31探究在线九年级英语(上)·Y江
单元写作专题
ing and voice.With the help of her teacher,she
learnt to read with her fingers at six.When Helen
grew up,she became a great writer and wrote a fa-
mous book-The Story of My Life.She passed away
in1968.
We can learn a lot from her.We should study
hard at all times.Never give up no matter what
happens.Hold on to our dreams and believe that
they'll come true one day.
写霍
“梦虽遥,追则能达;愿虽艰,持则可圆。”假
设你是李华,你所在的English Club将要举办以
“Never give up”为主题的故事分享活动。请你
结合自身或他人的经历,用英语写一篇词数100
左右的短文与大家分享。
提示:1.What difficulties did you./he/she
have?
2.How did you/he/she overcome the prob-
lems?
3.What can you learn from your/his/her ex-
periences?
Never give up
©第7课时
一、阅读理解。
Growing up in a hot Las Vegas desert,all
Amy Purdy wanted was to be free.She would
dream about travelling around the world and living
in a place where it snowed.
At the age of nineteen,she went to a snowy
place and managed to find a good job there.For the
first time,she felt free and could make money to
support herself.
However,one day she went home from work
with what she thought was the flu.But less than 24
hours later,she was in hospital.Several days lat-
er,the doctor told her that she had bacterial men-
ingitis(细菌性脑膜炎).
Over the course of two and a half months,she
lost both her legs below the knees.When her par-
ents wheeled her out of the hospital,she was com-
pletely broken.However,she knew that in order to
move forward,she had to say goodbye to the old
Amy and learnt to accept the new Amy.
Four months later,she tried snowboarding
again,although things didn't go quite as well as she
had expected:her knees and her artificial ankles
(人工踝关节)were always straight.But she
didn't cry out.
With the help of her parents and her leg mak-
er,she had the right pair of feet that she could
snowboard in.After a lot of practice,she won 3
gold medals in the World Cup,which made her the
best disabled woman snowboarder in the world.
So don't see our difficulties as something bad
when they appear.Instead,we can consider them
as good gifts which can help us go further than we
could go.
Assessment
1.What was Amy's dream when she was young?
A.Having a good job.
B.Winning gold medals.
C.Living in a place where it snowed.
D.Always being happy and healthy.
2.What is the correct order of the following events
according to the passage?
a.Amy lost both her legs below the knees.
b.Amy found a good job in a snowy place.
c.Amy finally won 3 gold medals in the World
Cup.
d.Amy met many difficulties but she didn't give
up.
A.b-c-d-a
B.b-a-d-c
C.d-b-c-a
D.d-a-b-c
3.Which words can best describe Amy Purdy?
A.Quiet and wise.
B.Patient and honest.
C.Kind and helpful.
D.Strong and hard-working.
4.What lesson can we get from the passage?
A.When in trouble,learn to ask for help.
B.It's important to draw lessons from failure.
C.We can try different ways to overcome diffi-
culties.
D.What makes us proud is not to never fall but
to rise every time we fall.
5.What's the best title for the passage?
A.An unhappy girl
B.A helping hand to a girl
C.A girl who loves snowboarding
D.A girl living a new life in her way
Unit 3 32
二、完形填空。
"When I was 8,a doctor predicted that I
wouldn't live past 20.1.now I'm here,at 29,
happy with my life,"says Ma Jun,the youngest
winner of this year's Junma Awards for Ethnic Liter-
ature.Ma is very 2.,but he suffered much
trouble in his life.
At birth,his parents noticed something
3.-his limbs(四肢)were weak,and he
couldn't move or stand without help.His poor
health 4.him from other children.While his
partners ran and played,Ma could only sit on the
stone steps,5.in sadness.
In 2016,he passed his college entrance ex-
ams,but chose not to go to university.His poor
family and his 6.condition forced him to make
a difficult decision:If he went to college,his
7.would have to drop out of school.For
years,Ma's parents carried him on their 8.to
school,braving wind and rain(冒着风雨).They
9.a shop to make a living.If Ma Jun went to
college,both of them would have to go with him.
With 10.resources,they couldn't manage both
sons'education.Ma made the 11.decision to
stay at home,giving up his own schoolwork to give
his brother a 12.to continue studying.
Although his decision came from 13.and sac-
rifice(牺牲),it trapped Ma in hopelessness..He
hoped to experience university life and prove he
could achieve success.
Luckily,he got a 14.,Shi Tiesheng's
best-seller The Temple of Earth and I.At first,Ma
had no 15.in the book,but the word "wheel-
chair"caught his attention.He thought this writer
might have experienced the same situation as him,
so he decided to open the book.Shi inspired Ma,
who had found a path for the rest of his life:litera-
ture.
33探究在线九年级英语(上)·YL
1.A.And
B.But
C.Or
D.So
2.A.strong
B.poor
C.talented
D.weak
3.A.unusual
B.interesting
C.amazing
D.happy
4.A.broke
B.separated
C.protected
D.hid
5.A.moving
B.standing
C.listening
D.watching
6.A.health
B.weight C.height
D.mind
7.A.father
B.mother C.brother D.sister
8.A.limbs
B.hands
C.backs
D.legs
9.A.ran
B.wanted
C.bought
D.sold
10.A.hopeful
B.limited
C.endless
D.rich
11.A.successful
B.simple
C.silly
D.selfless
12.A.chance
B.balance
C.choice
D.reward
13.A.respect
B.love
C.pleasure
D.fun
14.A.newspaper
B.book
C.wheelchair
D.path
15.A.confidence
B.surprise
C.interest
D.patience
三、短文填空。
I used to believe that success came only to the
lucky ones.I never seriously tried 1.
realize
my own dreams until I met 2.
old artist
named Mr Wilson.He told me his story:Although
you are not naturally gifted,you can still achieve
great things through hard work.He had a simple
goal:to create art so that it could bring joy to eve-
ryone.It 3.a long journey.He didn't sell a
single painting until he turned forty!But he kept
practising every day,believing 4.himself.
His advice changed my life.Now I understand that
5.
the road is difficult,you can
reach your goals as long as you don't give up.温馨提示:清做完后再看答案!
三、l.are likely to2.no matter what
3.a mix of 4.pointed out that
5.passed on to 6.has spent paid off
四、1-4DCCD
参
考答
案
五、1.me2.paid3.but4.asked5.through
6.office 7.kids 8.difficult 9.truly 10.doing
第6课时单元写作专题
Unit 1 Know yourself
迁移写作
Dear Mr Smith.
第1课时Welcome to the unit
I'm writing to recommend myself to be the new monitor
1.accountant 2.organized 3.order 4.suppose
of our class because I think I'm a good choice.My name is
5.social
1.patient 2.to explain 3.careless 4.involves
Shirley and I'm 15.I enjoy reading books and playing bas-
ketball in my free time.I'm a calm and helpful person.
5.energetic
三、l.not to show off2.comes/,came up with
I believe I'm suitable for the position of monitor for
three reasons.First,I'm very responsible.I always finish
3.Neither nor knows/knew
4.keeping everything in order
my homework and class duties on time.Second,I'm or-
5.be curious about 6.good at working with
ganized and good at planning.For example,last term I or-
四、l.hat's the good news/,What happened
ganized a charity sale successfully.Third,I get along well
with everyone and like to work in a team.I'm willing to
2.Yes/Sure/Of course
3.What do you want to be/What's your dream job
listen to others'ideas and help the teacher manage the
4.Why do you want to be a writer
class.
5.Hope you will achieve your dream one day/Hope
Thank you for considering my application.I would be
you can make it/...
very happy to serve our class.
第2课时Reading(l)
Yours sincerely,
Shirley
1.miss 2.impressed/impresses 3.standard
第7课时Assessment
4.tough 5.railway 6.worth
二、1.suits2.quit3.imagination
-、1-4BACD
4.mentioned
二、1-5 DBCDD6-10 ABACA11-15 BAADB
5.managers 6.standard
三、l.am happy with2.at all times
三、1.the2.But3.to4.for5.is
3.share with 4.pay attention to
Unit 2 Teenage problems
5.be serious about 6.Nothing is than
第1课时Welcome to the unit
7.be careful in 8.won high praise from
一、l.lately2.drove3.mad4.teenage
四、1-4DACB5-9 EBCDA
二、l.leads to2.tired3.lonely4.managed
wisely
第3课时Reading(2)
三、l.drove her mad2.to stay up late
一、l.exactly2.improvement3.Passengers
3.been in low spirits 4.lead to
二、1.to add2.cost3.meaningful4.carefully
5.cut back on 6.to spend dealing with
5.shout
7.wonder if we can 8.That's why
三、l.realized his dream2.n my opinion
四、l.What's the trouble(with you)/.
3.so that 4.seem to agree
2.List all the homework and decide when to do each...
5.together with goes
3.Which subject do you think)is the most difficult
四、1-4BADC
(for you)/...
五、1-5 CBDAB6-10 CABDD11-15 ACDAB
4.That sounds good/...
第4课时Grammar
5.How about turning off your phone during study time/...
-1.opposites 2.probably 3.encouragement
第2课时Reading(1)
4.winners 5.kindness 6.matter 7.challenges
-1.waste 2.stress 3.mobile phone 4.regretted
8.personalities outgoing
1.stuck 2.decisions 3.suffering 4.patience
二、l.Both and2.either or3.neither nor
5.treat
4.not only but also
三、l.to stick to2.are under stress
三、l.sure that you'l2.Not only but also has
3.suffered from 4.fell behind
3.Neither nor is 4.as well as I are
5.aren't allowed to 6.are strict with
四、l.that let us down2.to decide on
7.are worried about
3.ready to take on
四、1-4BDAC5-9 ADBEC
4.As a matter of fact 5.Either or are
第3课时Reading(2)
6.except are 7.remember that 8.willing to
-1.exam 2.focused 3.ability 4.worries
9.is suitable for
二、l.stay away from2.come to a decision
10.prepared themselves for
3.good news is that 4.Don't leave until
第5课时Integration
5.a hard time with 6.Make sure that
1.points 2.position 3.negative 4.consider
三、1-5 CADCB
5.lecture 6.president 7.cooperate
四、1-5 DAABB6-10 BAACD11-15 CBDCD
二、l.son confident2.behaviour3.succeeded
第4课时Grammar
4.connection 5.speaker 6.have voiced
一、1.sily2.normal3.dictionary4.dialogue
一探究在线·九年
5.bottom 6.communicate 7.youth
1.I used to rely on my parents for everything,but now
二、1-4DDBA
I can take care of myself/...
三、l.if/whether there was
2.The most important lesson is to never give up/...
2.where the market is
3.Where/How did you learn that lesson
3.why Jimmy did that
4.What's your future plan
4.whose coat this is
5.How will you achieve it/...
5.who will come 6.when he will
第2课时Reading(l)
7.heard of 8.has difficulty in
-1.yet 2.continued 3.whenever 4.muscle
9.getting along well with
5.attitude 6.however 7.universe
10.stresses/stressed her out
二、l.highly2.surprisingly3.achievements
11.arguing with about
4.scientific
第5课时Integration
三、l.inspiration2.recognized3.Shortly
suffering
-1.mood 2.pain 3.shame 4.midterm 5.tight
4.overcame
6.adult 7.Ugly 8.overweight 9.rapid
四、l.stood/got in her way2.to get a
around
10.bedtime
3.robbed them of 4.been diagnosed with
二、l.mean2.screens3.strangers4.stages
5.focuses on improving 6.against all odds
5.bullied 6.uncomfortable 7.experiences
7.were translated into
三、l.risk crossing2.get yourself down
五、1-5 DABBC6-10 CBEDA
3.brought about 4.put up with
第3课时Reading(2)
5.reach out to
1.to further 2.despite
6.uncomfortable about speaking
3.household names contributions
7.went through 8.stand up for
1.musician 2.death 3.households 4.audience
9.ran/got into trouble with
三、l.has trouble remembering
四、1-5 BBCAD
2.keep your eyes on
五、l.with2.differences3.Although4.easily
3.until not at all 4.lived on
5.communicating 6.worries 7.lost
四、1-5 DABBC
8.themselves 9.impossible 10.treated
五、1-5 BADDC6-10 BCDCD11-15 BABCD
第6课时单元写作专题
第4课时Grammar
迁移写作
一、l.knees2.pretty3.shoulders4.coaches
Dear Jack,
5.Cheers 6.challenging
I'm sorry to hear that you're feeling worried and
二、1.when2.as soon as3.since4.after
stressed because of the coming exam.I quite understand
三、1-3DBC
your feelings,so I'd like to share some useful advice with
四、1.when/while2.Whenever
you.
3.has been since 4.won't until
First,make a clear and reasonable review plan for
5.In France,shake your friend's hand as soon as you
your study and never compare yourself with others blindly.
meet your friend in the street.
Second,do some regular exercise every day to relax your
五、l.get over2.got to meet3.made it to
body and mind,which can greatly improve your learning
4.teach ourselves about 5.was impressed by
efficiency.Third,communicate more with your family,
6.come to mind
teachers or friends and ask for their support when you feel
第5课时Integration
upset.Keeping a good mood is very important.Believe in
1.whatever 2.victory 3.fair 4.will 5.fair play
yourself and work hard every day,and you'll certainly
6.Irish
make great progress and achieve good results in the exam.
二、l.runners2.competed3.performed
I hope my advice can be helpful to you and that you'll
1.semi-final(s)2.performances 3.injured
do well in the exam.
4.disappointed 5.Gymnasts
Yours,
四、1.was born with2.turned over
Li Hua
3.live in hiding 4.keeping a diary
第7课时Assessment
5.have lived through 6.thanks to
一、1-5 ACDCB
7.be accepted into 8.manage to get through
二、1-5 BBACB6-10 DACAB11-15 DDBCA
五、1-5 BBCDB
三、1.by2.the3.and4.to5.am
六、l.Stories2.crossing3.Sadly4.worried
Unit 3 Never give up
5.made 6.herself 7.and 8.hours 9.won 10.on
第l课时Welcome to the unit
第6课时单元写作专题
1.seed(s)2.journeys 3.wonderful 4.dancers
迁移写作
5.towards
Never give up
二、l.seed(s)2.wonder3.hardships
Liao Keli is a ping-pong player.He lost his right arm
4.communication
accidentally at the age of five.With the help of his par-
三、1.come true2.hold on to
ents,he learnt to eat and write with his left hand.After
3.for to work with 4.achieved her dream
going to school,he studied hard and got good grades.At
5.in addition 6.is to be
the beginning of learning to play ping-pong,he always fell
7.experience in helping 8.requires years of
down easily.However,he never gave up.Other athletes
级英语(上)·YL一
41
practised four to five hours every day,but he practised
5.Overtourism
seven to eight hours every day.His hard work finally paid
二、l.is served2.are housed3.are digitalized
off.At the Paralympics,he won a gold medal.
4.researching 5.to contribute
It's difficult to achieve our dreams because of the diffi-
三、l.serve the needs of2.were amazed by
culties.But if we keep trying and never give up like Liao
3.make a difference 4.made up his mind
Keli,I believe all of us will be successful.
5.devoted to developing
第7课时Assessment
四、1-4DBCB
一、1-5 CBDDD
1.connected 2.farmers'3.getting 4.her 5.videos
二、1-5 BCABD6-10 ACCAB11-15 DABBC
6.by 7.worth 8.focused 9.actively 10.but
三、1.to2.an3.was4.in5.(al)though
第6课时单元写作专题
Unit 4 Life is beautiful
迁移写作
第1课时Welcome to the unit
My role model
一、1.self2.cactus3.unique4.Typhoons
My role model is my father.He is a middle-aged man
5.encourage
with a warm smile and a big heart.
二、l.to pass2.forms3.confidence4.lessons
He has many good qualities.He is very hard-working
5.Lotuses
and responsible.Every morning,he goes to work early
三、l.continued to fall2.carry on
and often comes home late.Even when he is tired,he
3.whether or not 4.reminds him to take
never gives up or complains about anything.Instead,he
5.all year round 6.taught me not to be
always faces every difficulty bravely with a positive atti-
7.so hard that So it is
tude.He is also kind to others and often helps our neigh-
四、l.hat's that/..
bours when they are in trouble.
2.It has a painting of bamboo on it/...
From him,I have learnt that a person should be re-
3.Where did you get that fan
sponsible for his work and family.He has taught me to
4.Like what/...
stay confident when facing problems.I will try my best to
5.Oh,that's interesting/...
be a better person like him.
第2课时Reading(l)
第7课时Assessment
一、l.unlike2.oil3.stems4.to bear5.unused
-1-4 DCAB
二、l.bears2.Since3.peanuts4.attractive
二、1-5 AACBD6-10 ADBCB11-15 BCDAB
5.tell 6.celebration
三、1.the2.To3.were4.with5.which/that
三、l.compared with2.expected of you
Unit 5 Music speaks
3.dug out 4.a couple of
第1课时Welcome to the unit
5.are digging up 6.It's a pity that
-1.guitar 2.instrument 3.pear-shaped 4.keyboard
7.took the lead
5.bow
四、1-5 CBDBD6-10 BADEC
二、l.notes2.strength3.musical4.strings
第3课时Reading(2)
5.challenging
一、l.harvest2.attention3.society
三、l.taking violin lessons
1.nodded 2.hidden 3.differences 4.qualities
2.get make a sound takes
三、l.afford to buy2.good for relaxing
3.at the age of 4.find it to listen to
3.Being is important to
5.It seems hard to
4.expect him to be(come)
四、l.What club did you join
5.suggested that spend
2.I'm good at playing the pipa
四、1-5 BCDCB
3.When did you learn it 4.Where do you meet
五、1-5 BDCCA6-10 BDAAD11-15 BACBD
5.See you then
第4课时Grammar
第2课时Reading(1)】
一、l.stamp2.wives3.dentist4.passage
-1.composer 2.flow 3.familiar 4.worldwide
5.helpfulness 6.purpose 7.boss
5.unique
二、l.made2.pleased3.making4.recycling
二、l.allows/.allowed us to play2.grew up
5.broken 6.relaxed finishing
3.showed an interest in
7.Communicating/Communication speaking
4.rushing water blowing wind
8.waiting 9.smiling worried 10.working
5.As improved
三、l.Being kind2.without wasting
三、1-5 BACAD
3.him repairing
四、1-5 CCABD6-10 BABAD11-15 CCABD
四、1.heard singing2.was annoyed by
第3课时Reading(2)
3.feel challenged by
-1.simply 2.Eastern 3.mixture 4.press 5.bell
4.are/get/feel excited about
1.talented 2.unique 3.boundaries 4.earned
5.got/were bored with
5.Instead
6.get tired of listening
三、l.build a bridge2.is perfect for
7.be satisfied with 8.be there for you
3.was moved by 4.brings together
9.keep a balance between
5.by practising instruments
第5课时Integration
四、1-5 BBBCD
-1.condition 2.Daughter 3.graduate 4.judge
五、1-5 DBCAB6-10 CCBDA11-15 DBACA
42
一探究在线·九年
第4课时Grammar
4.am very happy that 5.that/which is admired
一、l.brain2.reminds3.designed4.tickets
三、1-4BACD
5.rather
四、1-5 ACADB6-10 BADBC11-15 BCBAB
二、l.for2.because3.Since4.As
第3课时Reading(2)
三、l.Why2.because
一、l.stroke2.character3.attention
3.He didn't go to school because he had a cold./Be-
4.characteristic 5.pressure
cause he had a cold,he didn't go to school.
二、l.appeared
2.undoubtedly 3.artistic 4.breath
4.think highly of 5.was chosen to sing
5.pride
四、l.because2.introduced3.added
三、l.When slow down
4.traditional 5.Both 6.playing 7.as
2.Whenever under pressure
8.activities 9.luck 10.especially
3.with pride and happiness
第5课时Integration
4.the first time that/when
1.concert 2.country 3.cowboys 4.quick
5.watch closely as
5.African
四、1-5 ACDDC
1.Americans 2.attended 3.calming 4.Flutes
五、1-5 CDABC6-10 ADBDC11-15 BDCAB
5.downloaded
第4课时Grammar
三、l.make less stressed
1.techniques 2.unfamiliar 3.basket 4.beautifully
2.made/has up/written thousands of
二、l.who/that2.that/which3.that4.that
3.are excited to 4.had effect on me
三、1-3ACC
5.a wide range of
四、l.that/which2.who/hat3.see it up
close
四、1-5 CBDAA
五、l.his2.child3.hard4.at5.travelled
五、1-5 CDABB6-10 DBCBD11-15 BCBAB
6.years 7.turn 8.and 9.more 10.called
第6课时单元写作专题
第5课时Integration
迁移写作
1.brushwork 2.present/show 3.Perhaps/Probably
My favourite music
4.sometime 5.expert
Music is an important part of my life.
1.similarities 2.colourful 3.done 4.freer
Among all types of music,I love pop music best.My
三、l.In general2.a great deal of
favourite song is Count on Me by Bruno Mars.
3.leave room for 4.used in are called
I often listen to it while doing homework or taking a
5.as close to as possible
walk.The cheerful melody and encouraging lyrics always
四、1-5 DACCD
lift my mood.Whenever I feel stressed,this song reminds
五、1-5 DADCA6-10 CDBBA11-15 CCBBD
me that friends will support each other.
第6课时单元写作专题
I once learnt to play this song on the piano,which
迁移写作
made me love it even more.I recommend it to everyone
Qi Baishi,one of the greatest Chinese painters,was
because it spreads positivity.Let's enjoy the power of mu-
born in Hunan Province in 1864.From an early age,he
sic together!
showed great intelligence and artistic talent.As Qi grew
第7课时Assessment
older,he learnt to do many different things.He was good
一、1-5 CADEB
at painting vegetables,flowers,birds and insects.From
二、1-5 CABDA6-10 BCDBD11-15 ACCBC
1902 to 1909,Qi travelled across China and painted many
三、1.Suppose2.deeply3.Although4.of
landscapes.The painting Cabbage is one of his most fa-
5.peaceful 6.darkness 7.centuries 8.your
mous works.He settled in Beijing at 57,and passed away
9.gives 10.enjoying
there in 1957 at the age of 93.
四、1.a2.and3.to4.of5.that
第7课时Assessment
Unit 6 The art of the brush
一、1-5 BDAEC
第I课时Welcome to the unit
二、1-5 CBACB6-10 BADAA11-15 BBABC
1.Calligraphy 2.inkstone 3.brush 4.create
三、l.traditional2.has3.because4.subjects
5.inkstick
5.found 6.used 7.more 8.Artists 9.its 10.to
1.calligrapher 2.exactly 3.bottled 4.practising
四、1.were2.about3.the4.and5.to
5.called
Unit 7 The big screen
三、l.provides for2.dates back to
第1课时Welcome to the unit
3.have noticed that 4.used by 5.try writing
1.actions 2.cartoon 3.science fiction 4.romance
四、l.How long have you learnt it
5.moment
2.What kind of paper are you using....
1.comedy 2.documentaries 3.mostly 4.character
3.What is it made from/What is xuanzhi made from
5.funny
4.No,it isn't/Not really
三、l.risks his life2.make a contribution to
5.You need to practise more often/You should follow a
3.is full of
good teacher first/...
4.has been on haven't seen yet
第2课时Reading(1)
5.What's type of films
一、1.tip2.doorway3.stil4.final5.pleasure
四、l.What do you think of it2.What is it about
二、l.give it a try2.how to concentrate on
3.I'd like to/...4.When did you watch it
3.takes great pleasure in
5.Who did you go to see it with
级英语(上)·YL一