(共30张PPT)
Presentation
人教新目标版 八年级(上册)
Presentation
1.熟练掌握以下词汇和短语: serious, mirror, kid, as long as, necessary, be different from, both, though, bring out, grade, should, the same as, saying, reach, hand, touch, heart, fact, in fact,break, arm, share
掌握句型：I'm quieter and more serious than most kids.
I don't really care if my friends are the same as me or different.
A true friend reaches for your hand and touches your heart.
2.通过找段落主题句能够领会段落大意，能准确概括2b的大意；能够回答whether friends should be the same or different;通过细读梳理文章脉获取细节信息，能准确完成回答问题、思维导图、判断题，运用形容词，副词的比较级谈论与朋友的相同与不同之处。
3. 学会交友，知道朋友间应该求同存异，懂得友谊的珍贵从而珍惜友情。
Presentation
Watch a video and answer the questions.
1. Do you have a good friend
Who is your best friend
2. What do you think a good
friend should be like
3.Are you the same
What are you different from
…
I think a good friend should be…
Example:
Jack is my best friend. He is taller than me. But he is as friendly as me. He works harder than me, so he always helps me with my study.
Presentation
2a
Write the comparative forms of the following adjectives. Then use them to write five sentences about you and your friends.
popular__________ funny ________ quiet ________ hard-working __________ serious ________ friendly ________
outgoing ___________ smart ________ shy ________
more popular
quieter
shier\shyer
more outgoing
funnier
friendlier
smarter
more hard-working
more serious
My best friend and I
Similarities:
Differences:
We are both….
He\She is as___ as me.
Use comparatives
(运用比较级)
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
My friend Yang Ying is more hard-working than me, but I am funnier than her.
My friend Mary is quieter than me ,but I am smarter than her.
My friend Tom is friendlier than me ,but I am more outgoing.
My friend Tom is as outgoing as I, but I am funnier than him.
Do you have more similarities or differences
In your eyes, should friends be the same or different
seriousadj. 严
肃的；稳重的
Presentation
Should friends be the same or different Why
A report interviewed three students, Here are what they said.
Interviewer
A good friend should be the same as me.
the same as和…相同;与…一致
Because I think a good friend is like a ________.
mirror
For example, my best friend and I...
A good friend should be different from me.
be different from与…不同; 与……有差异
Because I think It’s not ________ to be the same.
necessary
For example, my best friend and I...
necessary[ nes s ri]
adj. 必需的,必要的
mirror[ m r (r)]n. 镜子
A good friend can be the same as me or different from me. I don’t ____ about that as long as we are good to each other.
care
as long as只要,既然
Presentation
You share your ideas. How about other students’opinions Let’s read three short passages to know more.
Jeff Green
Huang Lei
Mary Smith
Presentation
1. Read the passage quickly and find out
what their friends’ names are.
Name
Best friend's name
Yuan Li
Larry
Carol
2.Read the passage again and choose the
right answer.
What’s the passage talking about
A views（观点）about parents.
B views about teachers.
C views about friends.
Jeff Green
Huang Lei
Mary Smith
Fast reading
Presentation
Fast reading
Read and find out their ideas!
A good friend is like a mirror.
It’s not necessary to be the same.
I don’t really care if my friends are the same as me or different.
Reading skill : Usually, the topic sentence is the first or the last sentence of each para.
Presentation
2b
Should friends be the same or different Read about what these people think. Underline the comparative words and phrases in the passages.
My mother told me a good friend
is like a mirror. I’m quieter and
more serious than most kids. That's
why I like reading books and I
study harder in class. My best friend Yuan Li is quiet too, so we enjoy studying together. I'm shy so it's not easy for me to make friends. But I think friends are like books—you don’t need a lot of them as long as they’re good.
It's not necessary to be the same.
My best friend Larry is quite
different from me. He is taller and
more outgoing than me. We both
like sports, but he plays tennis better,
so he always wins. However, Larry often helps to bring out the best in me. So I'm getting better at tennis. Larry is much less hard-working, though. I always get better grades than he does, so maybe I should help him more.
I don’t really care if my friends are the same as me or different. My favorite
saying is, “ A true friend reaches for your hand and touches your heart”. My
best friend Carol is really kind and very funny. In fact, she’s funnier than
anyone I know. I broke my arm last year but she made me laugh and feel
better. We can talk about and share everything. I know she cares about me
because she's always there to listen.
Jeff Green
Huang Lei
Mary Smith
Presentation
Careful reading
Read the first passage and fill in the friend card.
Idea：________________________.
Personalities(性格)：____________ ____________________________.
Best friend: ________.
Similarities: _________________.
________________________.
Restate idea(重申观点): _________
______________________________
______________________________.
A good friend is like a mirror
He is quitter
and more serious than most kids
Yuan Li
They are both quiet
They enjoy studying together
like books—you don’t need a lot of them as long as they’re good.
Friends are
Presentation
How do you understand the saying
Friends are like books—you don’t need a lot of them as long as they are good.
朋友如书，在精不在多。
Friends are like _______—________.
Friends are like _______—________________.
What are friends like Complete the sentences.
Presentation
Careful reading
Read the second passage and
fill in the friend card.
Idea：________________________.
Best friend: ___________________.
Similarities: ___________________.
Differences:
______________________________
______________________________
______________________________
______________________________
It's not necessary to be the same
Larry
They both like sports
Larry is taller and more outgoing.
Larry plays tennis better.
Larry is much less hard-working.
Huang Lei always gets better grades.
Presentation
How do you understand the saying
bring out 使显现；使表现出
我最好的朋友经常帮助我展现出最好的一面。
My best friend often helps to bring out the best in me.
Which friend do you think about when you read this saying
How does he/she bring out the best in you
Give us an example.
Presentation
Idea：_____________________________________________________
Favorite saying: ____________________________________________
Best friend: ___________________.
About Carol: _______________________________________________
___________________________________________________________
She doesn't really care if her friends are the same as her or different.
A true friend reaches for your hand and touches your heart.
Carol
She’s kind and funny.
She’s funnier than anyone.
She made Mary laugh and feel better.
They can talk about and share everything.
Careful reading
Read the third passage and fill in the friend card.
Presentation
How do you understand the saying
一个真正的朋友,是向你伸出援助之手, 使你感动。
Which friend do you think about when you read this saying
How does he/she reaches for your hand or touches your heart Give us an example.
A true friend reaches for your hand and touches your heart.
Presentation
2c
Are the following statements true (T) or false (F)
1. Jeff is less serious than most kids.
2. Jeff and Yuan Li are both quiet.
3. Jeff thinks it is easy for him to make friends.
4. Huang Lei is taller than Larry.
5. Huang Lei isn’t as good at tennis as Larry.
6. Larry works harder than Huang Lei.
7. Mary thinks her friends should be the same as her.
8. Carol broke her arm last year and Mary made her feel better.
more
F
T
F
difficult
F
shorter
T
F
is less hard-working
F
doesn’t care if
F
Mary
Carol
Jeff Green
Yuan Li
Huang Lei
Larry
Mary Smith
Carol
Presentation
Presentation
2d
How do you and your friends compare with the people in the article Write five sentences.
I’m different from Jeff because I'm louder than the other kids in my class.
My best friend is similar to Larry because she’s less hard-working than me.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I’m similar to Jeff because I like reading books and works harder in class.
2. My friend is similar to Carol because she always makes me laugh.
3. I’m different from Huang Lei because I think my best friends should be the same as me.
4. My friend is similar to Yuan Li because she is quiet and like studying.
5. I’m similar to Carol because I’m funnier than any other kids and I make my friends laugh.
Presentation
Which saying is your favorite Which friend do you think about when
you read this saying Why Tell your partner about it.
2e
1.A good friend is like a mirror.
2. Friends are like books—you don’t need a lot of them as long as they’re good.
3. My best friend helps to bring out the best in me.
4. A true friend reaches for your hand and touches your heart.
Example
My favorite saying is “A true friend reaches for your hand and touches your heart.” It makes me think about my best friend, Wu Zhou. He helps me with my English for three years. I was bad in English three years ago. But now I’m interested in it with his help.
Presentation
Which saying is your favorite Which friend do you think about when
you read this saying Why Tell your partner about it.
2e
My favorite saying is “ A good friend is like a mirror. ” It makes me think about my best friend Ada. We both like wearing cool clothes and share our stories with each other.
I think “ A friend in need is a friend indeed.” is a good saying. It makes me think about my best friend Peter. He is really helpful. When I feel sad, he is always by my side and encourages me as much as he can.
Presentation
Jeff Green
Yuan Li
Huang Lei
Larry
Mary Smith
Carol
A good friend is like a mirror
Yuan Li
They are both quiet
Friends are
Idea：________________________.
Personalities(性格)：____________ ________________.
Best friend: ________.
Similarities: _________________________________.
Restate idea(重申观点): _________________________
________________________________________________.
and more serious than…
He is quitter
They enjoy studying …
don’t need a lot of them as long as they’re good.
like books—you
Idea：________________________.
Best friend: ___________________.
Similarities: ___________________.
Differences: ___________________________________
______________________________________________
______________________________________________
It's not necessary to be the same
Larry
They both like sports
Larry is taller and more outgoing.
Larry plays tennis better.
Larry is much less hard-working.
Huang Lei always gets better grades.
Idea：_________________________________________
Favorite saying: ________________________________
Best friend: ___________________.
About Carol: ____________________________________
__________________________________________________
She doesn't really care if her friends are the same …
A true friend reaches for your hand and…
Carol
She’s kind and funny.
She’s funnier than …
She made Mary laugh and feel better.
They can talk about …
Presentation
Which pair of friends is like you and your friend Why
Jeff Green
Yuan Li
Huang Lei
Larry
Mary Smith
Carol
A good friend is like a mirror.
It’s not necessary to be the same.
I don’t really care if my friends are the same as me or different.
Presentation
No matter we are same or _________, ___________ we _________ each other;
We are ready to help _________;
We can _________ the best in each other;
We can talk and ________________ to each other;
Our _________ will last forever.
That's also what shining friends should be.
different
As long as
care about
each other
bring out
share everything
friendship
Presentation
How to be a good friend
Jeff Green
Mary Smith
Huang Lei
Larry
Carol
Yuan Li
enjoy
help
care
listen
share
Friendship
Watch a video and answer the question.
Presentation
What is a true friend like
A friend in need is a friend indeed.
When you are down,a true friend
can raise you up.
If you turn and walk away,your
true friend follows.
Friends are very important for us.
friend
Presentation
I.用所给词的适当形式填空
1. Tom’s desk is good, but John’s desk is ______.
2. Chicago is ______ (big) than Paris.
3. This book is as ______ (good) as that one.
4. The weather in Shanghai is _______ (bad) than that in Beijing.
5.The food in this bag is _______________ (delicious) than that
in that one.
6. The ruler on this desk is as _____ (long) as that on that desk.
better
bigger
good
worse
more delicious
long
Presentation
1. 事实上，遂宁真的是一个让你休闲放松的好地方。
_______ _______, Suining is really a good place to relax and enjoy yourself.
2. 在某些方面， 我和我妹妹完全不同。
In some ways, I am quite ________ ________ my sister.
This matter _______ _______ _______ what you said.
3. 这件事和你说的很相似。
In fact
different from
is similar to
4. 我最好的朋友帮助把我最好的一面展现出来。
My best friend helps to _______ _______the best in me.
bring out
II.根据汉语意思完成句子
Presentation
1. Oral: Read the three passages on page 21 again and choose one to recite aloud.
2. Find out and underline the difficult phrases and sentences.
3. Recite the good sayings in this passage.
4. Write about you and your best friend …
What do you like about him/her
The same things between you.
The differences between you.
https://www.21cnjy.com/help/help_extract.php中小学教育资源及组卷应用平台
Unit 3 Section B 2a-2e 学案 (知识精讲+分层作业)
【词汇用法】
1.bring out 使显现，使表现出
The dress brings out the color of her skin .这件礼服显现出她皮肤的颜色。
bring out the best /worst in sb. 激发出某人最好/最差的品质。
care n. 小心，take care ! 当心，take care of 照顾
→adj.careful 仔细的→adv. carefully 仔细地
v . 介意，在乎=mind
care about 关心，在意
He doesn’t care about anything people say .他不在意别人说什么。
3. be there for sb. 随叫随到，不离左右
Parents are always there for children . 父母总在孩子左右。
be there to do sth. 随时准备做某事
She is there to workout the problem . 她随时准备解答问题。
【重点短语】
1.care about 关心/留意/关注
2.be different from 与…...不同
3. be like a mirror 像一面镜子
4. as long as 只要；与…...一样长
5. bring out使显现；使表现出
6. get better grades 取得更好的成绩
7. reach for 伸手达到/达到
8. touch one’s heart 感动某人
9. in fact 事实上
10. make friends 交朋友
11. be good at 在某方面成绩好
12.one…,the other… 一个…，另一个
13.share everything 分享一切
【重点句型】
1. My mother told me a good friend is like a mirror.
妈妈告诉我好朋友像一面镜子。
be like意为“像……一样”。其中like为介词，意为“像，和……一样”。
例：那顶帽子像只猫。That hat looks like a cat.
他说起话来像个老师。He talks like a teacher.
be like与look like
be like “像……一样”，强调性格、人品等内在特征相像。
Mary is like her mother. They are both quiet.
玛丽像她的妈妈，她俩都很文静。（性格像）
look like “看起来像”，强调外貌等外在特征相像。
Mary looks like her mother. They are both tall and thin.
玛丽看起来像她的妈妈，她俩都又高又瘦。（外貌像）
2. I’m shy so it’s not easy for me to make friends.
“It’s +adj.+ for sb. to do sth.”是固定结构，意为“做某事对某人来说是……的”。it是形式主语，真正的主语是后面的动词不定式短语。
例：每天吃大量的蔬菜对我们来说是很重要的。
It’s very important for us to eat a lot of vegetables every day.
3. But I think friends are like books — you don’t need a lot of them as long as they’re good.
(1) as long as 在此处意为“只要”，引导条件状语从句。当主句为一般将来时或主句谓语含有情态动词时，as long as引导的条件状语从句用一般现在时表示将来。
例：既然你说了实话，我将会帮助你。
As long as you tell truth , I’ll try to help you.
只要明天天气好，我们就去徒步旅行。
As long as the weather is fine tomorrow, we will go hiking.
只要你按时归还，你可以把书带走。
You may take this book away as long as you return it on time.
(2)as long as表示原因，意思是“既然，由于，因为”, 引导原因状语从句。
例：因为这些天天气变化，我们最好穿更暖和的衣服。
As long as the weather is changeable these days , we’d better wear warmer clothes.
(3) as long as 还可以用于比较级as…as的句型中，表示“像……一样长”。
例：我的胳膊跟你一样长。 My arms are as long as yours.
4. However, Larry often helps to bring out the best in me.
(1)help to do sth. 意为“有助于做某事”。
例：这个节目有助于提高我们的英语水平。 This program helps to improve our English.
他的演讲有助于理解这项政策。 His speech helps to understand the policy.
help sb.(to) do sth.意为“帮助某人做某事”。此处的to可省略。同义词组为help sb. with sth.。
例：她常帮我学英语。
She often helps me (to) learn English.= She often helps me with my English.
help oneself to sth. 意为“自便；随便吃”。
例：随便吃些鱼。 Help yourself to some fish.
晚餐准备好了！请随便吃吧！Dinner’s ready! Help yourself !
(2) bring out 为及物动词短语。意为“使显现；使表现出”。bring out the best/worst in sb.“把某人最好/最坏的一面表现或显露出来”。
例：那件连衣裙果真能衬托出你的肤色。
That dress really brings out the color of your skin.
我想阐明一下这首诗的意义。
I want to bring out the meaning of the poem.
例：请告诉我怎样把我最好的一面展现出来。
Please tell me how to bring out the best in me.
喝酒把她最坏的一面暴露了出来。 Drinking just brings out the worst in her.
bring out 可意为“出版；生产”。
例：这家公司正在生产一种新型跑车。
The company is bringing out a new sports car.
bring out 还可意为“把……拿出来”。
例：老师要求我把家庭作业拿出来。
My teacher asked me to bring out my homework.
5. I don’t really care if my friends are the same as me or different.
(1)if在此作连词，“是否”，其后所引导的句子是谓语动词care的宾语，故称作“宾语从句”。
例：我不知道他是否在家。 I don’t know if he is at home.
他问我是否喜欢音乐。 He asks me if I like music.
if 还可引导条件状语从句，意为“如果”。此时若主句为一般将来时，if引导的条件状语从句要用一般现在时表示将来。
例：如果明天下雨，我将不会和你们一起去那里。
I won’t go there with you if it rains tomorrow.
(2)the same as意为“与……一样”，反义短语为 be different from，意为“与……不同”。
例：这本书看起来与那本书一样。 This book looks the same as that one.
6. My best friend is similar to Larry because she’s less hard-working than me.
similar形容词，“相像的；类似的”，常与介词to连用，be similar to意为“同……相像的、类似的”。
例：我的新裙子和你的那件相似。 My new dress is similar to the one you have.
be similar in意为“在……方面相似”。
例：莉莉和露西有相似的习惯。 Lily and Lucy are similar in habits.
这两座房子大小差不多。 The two houses are similar in size.
7. A true friend reaches for your hand and touches your heart.
(1) reach for one’s hand 意为“伸手帮某人一把”。reach此处作不及物动词，意为“伸出(手/臂)”。
如：你能伸手帮我一下吗？Can you reach for my hand
他伸手到桌子对面把书拿起来。He reached across the table and picked up the book.
(2) reach还可用作及物动词，意为“到达，抵达”, 后接地点名词。
如：昨天晚上他到达了广州。He reached Guangzhou last night.
(3) touch one’s heart 意为“打动某人的心,令某人感动”，其中touch用作及物动词，意为“感动”。
如：这个故事令我感动。The story touched my heart
.(4) touch用作及物动词，还可意为“触摸”, touch还可用作名词，意为“联系”。
如不要摸那只狗！很危险。
Don't touch the dog! It's dangerous
保持联系 ：keep in touch
取得联系：get in touch
单项选择
( )1. —Let’s go shopping at the new mall.
—Why not shop online It’s________.
A．expensive B．more expensive C．less expensive D．the most expensive
( )2. My teacher helps to ________ the best in me.
A．take out B．look out C．bring out D．come out
( )3. I’m shy so it’s ________ for me to make friends.
A．easy B．popular C．difficult D．friendly
( )4. If you work hard, you will get good________.
A．grades B．notes C．lessons D．answers
( )5. Don’t worry about your job ________ you work hard.
A．as long B．so long C．as long as D．as longer as
二、用所给单词的适当形式填空。
6.Sam is really (talent). He can play the guitar, the piano and the drums.
7.One needs three things to be (true) happy in life: something to do, someone to love and something to expect.
8.Some (say) are very good. For example, "An apple a day keeps the doctor away."
9.The boy (break) his leg and he couldn't walk as usual.
10.I think Tom is a good friend because he always makes me (laugh).
三、完成句子。
11.李明做每件事情时总是关注细节。
Li Ming always details when he does everything.
12.我理解为什么上次我父母的想法与我的不同。
I understand why my parents' ideas were mine last time.
13.生活就像一枚硬币,快乐和痛苦是它的两个面。
Life a coin. Pleasure and pain are the two sides.
14.在我遇到困难的时候,我父亲总是在我身边帮助我。
My father always for me when I am in trouble.
15.实际上,我一点儿都不喜欢他的新发型。
, I don't like his new hairstyle at all.
四、完形填空
The weather in 2022 was terrible in many parts of the world. It was not good 16 growing plants and people's life.
Many farmers faced 17 problems. For example,there was too much rain in India in June. The tea farmers were very sad. The heavy rain damaged(毁坏) tea plants，so it was very 18 for farmers to pick tea leaves. Some farmers even lost their lives 19 they did the farm work.
Also, more problems came in July. The weather was 20 hot everywhere.Temperatures even went up to 50℃ in India. In the hot weather, insects(昆虫) became more and more. They 21 more damage to some plants.Some people became ill and were in a poor 22 because of the hot weather.
In China, many people 23 hot and uncomfortable too. Even there was no water in the rivers and the farmers 24 many crops（庄稼).
Good weather is important to people. All these problems happened because of the changing climate.So to live a happy 25 ,we must protect the environment.
( )16.A. for B. in C. at D. with
( )17.A. small B. different C. old D. wrong
( )18.A. difficult B. interesting C. terrible D. boring
( )19.A. before B. when C. though D. unless
( )20.A. luckily B. easily C. specially D. quickly
( )21.A. took B. thought C. found D. brought
( )22.A. part B. health C. place D. time
( )23.A. sounded B. tasted C. felt D. looked
( )24.A. left B. saved C. collected D. lost
( )25.A. life B. year C. plan D. work
五、阅读理解
Once again, Myra sat alone on the bus. Even after two weeks at her new school, Myra had not made any friends. At break (课间休息), she played alone. In art class, she drew alone. In the lunchroom, she ate alone. And on the bus ride home, she sat alone.
Myra could not understand(理解) why no one wanted to be her friend. Other kids joked and laughed with each other. But none of them joked and laughed with her. Just thinking about it made her head hurt and her stomach feel funny.
One day, as Myra sat alone on the way to school, she looked at the seat across from her. She saw a girl sitting all by herself. The girl looked lonely, too. Myra wondered if she should say hello.
But what if the girl didn't want to be her friend Maybe she already had a lot of friends. What if the girl ignored (忽视) her What if she laughed at her Myra stared at the floor of the bus. Finally, she took a deep breath to relax and smiled at the girl. The girl smiled back.
Myra said, "Hi, I'm Myra. Do you want to sit next to me "
The girl's smile grew. "I'm Nadia! Yes. I'd like to sit next to you."
At the next stop, Nadia slid (快捷而悄声地移动) into the seat next to Myra. They joked and laughed the whole way to school.
At break, Myra and Nadia played together. In art class, they drew together. In the lunchroom, they ate together.
And on the bus ride home, they sat together. When it came time for Myra to get off the bus, she turned to her new friend. "Bye, Nadia! I'll see you tomorrow!"
Nadia smiled. "Good-bye, Myra. I'll save you a seat."
Myra got off the bus. She turned around and waved to Nadia. Then she watched as the bus drove away. A big smile spread across Myra's face. She had made a friend, a friend who was going to save her a seat tomorrow. She could hardly wait.
( )26.Myra did everything alone at first because .
A. something was wrong with her head B. she had no friends
C. she didn't like playing jokes D. she liked to stay alone
( )27.The underlined word "funny" probably means in this passage.
A. interesting B. excited C. sick D. disappointed
( )28.Myra met Nadia for the first time .
A. at break B. in the lunchroom C. at the bus stop D. on the bus
( )29.The story tells us that when we want to make friends with someone, we could first.
A. take a deep breath B. have classes together
C. save a seat for him/her D. give a smile to him/her
( )30.According to the passage, we can infer (推断) that .
A. Myra's house was farther than Nadia's from school
B. Nadia and Myra were both in the same school
C. Myra greeted Nadia without thinking twice when she saw Nadia for the first time
D. Nadia would give her seat up to Myra the next day
六、根据上下文及所给提示补全短文。
The name of my best friend is Alice. She is my true friend 31 ________ she understands me very well and 32 ________(care) for my every need. I met her in class 6 and she became my 33 ________ (good) friend. I like her very much. I never had any friends like her ever before. She comes to my home and I a 34 ________ go to her home. Our parents respect (尊重)us very much and like our friendship. In my heart she is different from others. She is so precious(珍贵的) for me and I never want 35 ________ (lose) her. Whenever I get absent (缺席的)in the classroom, she helps me 36 ________ (do) all the homework left. She is much similar 37 ______ me in many ways. She never argues(吵架)with me. She is a humorous girl. She always makes me 38_______(laugh) through her interesting jokes and talks in her free time. She is very cute and active, and attracts everyone through her smile and a nice way of talking. She always encourages( 鼓励)me to do better in the classroom and exams. We are 39 ________ at sports.
We try to share 40 ________ (thing) in difficult times. We always do well in the class tests and exams.
Unit 3 Section B 2a-2e 学案 (知识精讲+分层作业)参考答案
一、单项选择
1-5 CCCAA
二、用所给单词的适当形式填空
6. talented 7. truly 8. saying 9. broke 10. laugh
三、完成句子
11.cares about 12.different from 13.is like 14.is; there 15.In fact
完形填空
16-20ABABC 21-25DBCDA
阅读理解
26-30BCDDB
选词填空
31. because 32. cares 33. best 34. also 35. to lose
36. do 37. to 38. laugh 39. good 40. things
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）
HYPERLINK "http://21世纪教育网(www.21cnjy.com)
" 21世纪教育网(www.21cnjy.com)
