0

关于野生动物保护的英语作文初中精品20篇

爱是可以在人间传递的,当你愿意为别人付出自己的爱心、伸出援手时,给予的也许不仅仅是具体行动上的帮助,还有可能感染对方的心灵。小编收集了有关爱心的作文,欢迎阅读。

浏览

2128

作文

1000

低碳经济下的环境保护作文英语

全文共 2872 字

+ 加入清单

作文【一】

One day Sun Wukong together with his master and brothers was walking across a river. Suddenly his master fell off the horse by the bad smell of river water. They found the water so dirty that they could hardly breathe.

A lot of factories along the river always poured their waste water and rubbish straight into the river which made the river water polluted. In this way most of the fish in the river were killed. If the river water all over the country is polluted like this, no living things will exist in the water. Now more and more people have come to realize how serious this problem is. Our government is doing her best to take measures to fight against pollution. We expect that the water in every river will be made cleaner and cleaner before long.

作文【二】

There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil. the polluted air does great harm to people’s health. The polluted water causes diseases and death. What is more, vegetation had been greatly reduced with the rapid growth of modern cities.

To protect the environment, governments of many countries have done a lot. Legislative steps have been introduced to control air pollution, to protect the forest and sea resources and to stop any environmental pollution. Therefore, governments are playing the most important role in the environmental protection today.

In my opinion, to protect environment, the government must take even more concrete measures. First, it should let people fully realize the importance of environmental protection through education. Second, much more efforts should be made to put the population planning policy into practice, because more people means more people means more pollution. Finally, those who destroy the environment intentionally should be severely punished. We should let them know that destroying environment means destroying mankind themselves.

作文【三】

Dear editor,

Environmental problems are becoming more and more serious all over the world. _________________________________________________________

Yours truly

Li Hua

Dear editor,

Environmental problems are becoming more and more serious all over the world.

With the development of industry and agriculture, cars make great noises and give off poisonous gas. Because of population expansion and overdevelopment, resources has become less and less. Trees on the hills have been cut down, and waste water is being poured continuously into rivers. The whole ecological balance of the earth is changing. Massive destruction of environment has brought about negative effects and even poses a great threat to man’s existence.

We must face the situation that exists and take actions to solve our environmental problems. We hope that all these measures will be effective and bring back a healthful environment.

Yours truly

Li Hua

展开阅读全文

更多相似作文

篇1:保护动物的英语作文

全文共 482 字

+ 加入清单

Animals Need Protecting

There are more and more endangered animals at present,so how to protect them has been our task of top priority 。 Its wrong for people to hunt animals for their meat and feather,for they are our good friends。We should protect them instead of killing them。Giant pandas,which are one of the endangered animals,live in the forests and live on bamboo lealves。They can just live safely in the natural protection zones。We should stop killing animal and protect them。

展开阅读全文

篇2:初中英语作文题目

全文共 864 字

+ 加入清单

Dormitory Clean Duty In China, when students go to middle school, most of

them need to live in school from Monday to Friday, they can go home on

weekends.

Students have to spend most of their time in school, they start to learn to

get along with others.

Everyone has roommates, there are always four people live in a dormitory,

without parents’ caring, students need to take care of themselves.

The first question needs students to think about is the dormitory clean

duty, while most of them are princes and princess at home. Students need to do

the house work, they should take turns, in that case, the dormitory will keep

clean.

It is reported that boys’ room are dirty, because they never clean

dormitory.

It is everyone’s duty to clean the dormitory, we should not keep silent

about the problem, students need to realize the clean environment can make their

mood comfortable.

展开阅读全文

篇3:初中生英语

全文共 748 字

+ 加入清单

Dear

Editor,

Recently

graffiti has become more noticeable in my college. I feel quite annoyed at them,

especially when some of my classmates praise them as a kind of so-called art.

Confronted with this impolite phenomenon, I cant help asking myself: what is

wrong with todays teenagers?

In

my opinion, graffiti is a form of vandalism. They are a mess and are ugly to

look at. Meanwhile, walls are public places, and they should not be used to

express personal views and feelings.

I

really think vandalism should be stopped, and those who refuse to stop this bad

practice should be punished. We should clear away these ugly expressions and

drawings so that our college may return to its true self--a clean, quiet place

for study, teaching and research.

Yours,

Li

Ming

展开阅读全文

篇4:关于茶的英语作文初中

全文共 1688 字

+ 加入清单

"When a guest comes to my home from afar on a cold night, I light bamboo to

boil tea to offer him.”— Ancient Chinese poem.

China is the home country of tea. Before the Tang Dynasty, Chinese tea was

exported by land and sea, first to Japan and Korea, then to India and Central

Asia and, in the Ming and Qing dynasties, to the Arabian Peninsula. In the early

period of the 17th century, Chinese tea was exported to Europe, where the upper

class adopted the fashion of drinking tea. Chinese tea—like Chinese silk and

china—has become synonymous worldwide with refined culture. At the heart of the

culture of tea—the study and practice of tea in all its aspects—is the simple

gesture of offering a cup of tea to a guest that for Chinese people today is a

fundamental social custom, as it has been for centuries.

China traces the development of tea as an art form to Lu Yu, known as "the

Saint of Tea" in Chinese history, who lived during the Tang Dynasty and who

wrote The Book of Tea, the first ever treatise on tea and tea culture. The

spirit of tea permeates Chinese culture, and throughout the country there are

many kinds of teas, teahouses, tea legends, tea artifacts and tea customs.

Better-known places to enjoy a good cup of tea in China include Beijing noted

for its variety of teahouses; Fujian and Guangdong provinces and other places in

the southeast of China that serve gongfu tea, a formal serving of tea in tiny

cups; the West Lake in Hangzhou, also the home of the Tea Connoisseurs

Association, noted for its excellent green tea; and provinces in southwest China

like Yunnan where the ethnic groups less affected by foreign cultures retain tea

ceremonies and customs in original tea-growing areas.

展开阅读全文

篇5:寒假英语作文初中

全文共 1684 字

+ 加入清单

In the winter vacation life I have seen such a story to share with you:

Boone smile day, boone to visit a client, but unfortunately, they didnt

reach an agreement. Boone very upset, come back later told the story to the

manager. Tell the manager listened patiently boone, silent for a moment and

said, "you might as well go again, but should adjust their own state, always

remember to smile, use your smile to impress each other, so that he can see your

sincerity."

Boone to try to do it, he behaved himself very optimistic, very sincere,

has been permeated with a smile on his face. Results each other have also been

infected by boone, they happily signed agreement.

Boone have been married for 18 years, every morning to go to work. Busy

life let he forgot his beloved wife, he seldom smile to his wife. Boone decided

to give it a try and see what difference smile will bring their marriage.

The next morning, boone comb my hair looked in the mirror is smiling at

frail, the scowl on his face. When he sat down to eat breakfast, he greeted Mrs.

With a smile. She amazed, very excited. In this two weeks, boone felt more

happiness than in the past two years.

Boone often sincerely compliment, now stop talking about their needs and

annoyance. He tried to see things from other peoples opinions. All this really

changed his life, he gained more joy and friendship.

This story gave me the message, do anything to adjust their own state of

mind, always remember to use the smile, set each other, play with your smile so

that he can see your sincerity. A smile can bring warmth, friendship, can bring

happiness. So in the work, life will smile to face, in a good state of mind to

treat people and things around.

展开阅读全文

篇6:暑假日记初中英语作文

全文共 758 字

+ 加入清单

this year‘s summer vacation was most enjoyable. i spent fifteen days helping my grandparents doing farm work in the countryside, where i saw mountains fields covered with green plants. sometimes i went swimming in the river to the west of the village, the water in which was quite clear.

i kept a diary every day. besides doing farm work, i help the children in the neighborhood with their lessons. all of them showed interest in english. they could read write wellthey could hardly understand simple english. so every day in the morning i spent about two hours helping them improve their listening spoken english. they all made great progress. their parents all thought highly of me. i now realize that knowledge is very needed in the countryside.

[暑假日记初中英语作文

展开阅读全文

篇7:关于失败英语作文初中

全文共 624 字

+ 加入清单

People always say in one life, they can’t be sailing plainly, it means

people will meet all kinds of difficulties and they are easy to feel frustrated,

the one who gets over frustration, the one who becomes successful. When we meet

difficulties, we must learn to face it in the optimistic way, so we can see the

hope and have the faith to move on. The difficult moment is just the small

interlude of our lives. As the saying that failure is the mother of success, so

we need to learn lessons from failure and then when the time comes, we will get

successful. Facing frustration is unavoidable, if we can handle it well, we will

win.

展开阅读全文

篇8:保护动物英语作文

全文共 1416 字

+ 加入清单

Now, some animals have disappeared, and then take crocodile is close to extinction, though very fierce, but humans are more fierce. Because of some organs from animals has the prominent economic value, thus become a subject of human plunder use, become the main factor of extinct animals. Crocodile with sharp teeth, and huge appetite for food, we all said the crocodile, but more afraid of human, the crocodile in the eyes of human, the crocodile can be made into the luggage, handbags, wallets, shoes and other goods, so the crocodile, has now become almost extinct animals.

Animal friends, a lot of destruction of human will have serious adverse consequences, ecological environment caused by serious imbalance, so that the human living environment is destroyed. Eliminate animal, is to eliminate human oneself, if one day the animals in the world are gone, that human can survive? To protect animals, cherish this nature of every creature! Let us start from now, starts from me, to protect the animals, make the world a better place! To protect animals, is to protect human oneself.

现在,有些动物已经灭绝了,就拿快要灭绝的鳄鱼来说,虽然很凶猛,但人类更凶猛。就是因为有些动物身上的器官具有突出的经济价值,由此成为被人类掠夺利用的对象,成为动物灭绝的主要因素。鳄鱼长着锐利的牙齿,和硕大的食物胃口,我们都说鳄鱼可怕,但鳄鱼更怕人类,在人类的眼中,鳄鱼皮可以制成行李箱,手提包,钱包,鞋等物品,所以鳄鱼,现在已经成为快要灭绝的动物了。

朋友们,动物的大量毁灭对人类将产生严重的不良后果,造成生态环境严重不平衡,从而使人类的生存环境遭到破坏。消灭动物,就是在消灭人类自己,如果有一天世界上的动物全都消失了,那人类还能生存吗?要保护动物,珍惜这自然界里的每一个生灵吧!让我们从现在做起,从我做起,保护动物,使世界变得更美好吧!保护动物,就是保护人类自己。

展开阅读全文

篇9:保护动物的作文高2

全文共 616 字

+ 加入清单

有一天,小狗球球正在小山坡上玩耍时,一不小心“咕噜”滚下了山坡,球球被摔得晕头转向,竟一时找不到回家的路了,怎么办呢?球球决定,先到处走走,看看能不能嗅到家的气味。

球球向东面走了一会儿,一阵臭味扑面而来,让她喘不过气来。“咦?这里怎么会有臭味呢?"于是,球球嗅着臭味,来到了小溪旁,球球抬头一看,天哪!球球大惊失色,原来清澈见底的水不见了,取而代之的居然是一些灰灰的废水!小鱼小虾们苦不堪言,纷纷对球球说:“球球,我们的生活太糟糕了,到处都是工厂,工厂排出的废水往小溪里倒,我们的兄弟姐妹们都提心吊胆的,你救救我们吧!”球球无能为力,只好走开了。

球球回到了原地,

向西面走了一会儿,她就闻到了熟悉的味道,球球高兴地跳了起来,“汪汪!”地叫了两声,向家的方向奔去。突然,一个猎人悄无声息地走了过来,用枪对准了球球,“砰!”猎人开了枪,“汪!"球球吓了一跳,往前狂奔了几步,幸好,没有打中,可球球不敢久留,像一匹脱缰的野马一样跑了起来,“嘎!”一阵刺骨的剧痛从球球的脚上传来,天哪!球球被捕狼夹夹中了,不一会儿,刚才那个猎人走了过来,一看,失望的说:“唉!又不是狼,拿这只狗回家煮了吃吧!”球球一听,汪汪地叫了起来,猎人把夹子打开,球球马上乘机逃了出去。

球球忍痛跑回了家,球球的爸爸妈妈听了她的讲述,都不约而同地说:“人类真是太残忍了,乱捕抓野生动物,还不爱护环境,真是太可恶了!”

是啊!通过球球的历险,我们应该好好爱护环境,保护动物了!

展开阅读全文

篇10:初中英语作文大全

全文共 614 字

+ 加入清单

Recently, I saw an interested video that was shot by a young foreigner. He

played two roles-a Chinese mother and an American mother. He imitated the

reaction about how the mothers treated their children in education. It was so

obvious that Chinese mothers took care of their children all the time and they

would do all the things for them. While the American mothers focused on the

childrens independence. They would ask the kids to do housework and when they

grew up, they asked the kids to move out. Both parents showed different ways to

love their children and their love was equal, for every mother is a great

heroine.

展开阅读全文

篇11:保护动物作文

全文共 387 字

+ 加入清单

保护动物,是每个人都要进到的责任。

今天,我爸爸说:“你看看,那屋里有鸟肉。”我一看,那血淋淋的感觉,让我大吃一惊。我是多么的气愤,有多么的为这些鸟可悲。听妈妈说:”这是爸爸专门买的网子,为了逮鸟。“使我万分气愤,为什么,你们要那么做。我质问爸爸的时候,爸爸说:”他吃咱家的玉米。“那我就更生气了,我说:”她吃那你也不能吃她啊,人饿了没吃的都会乞讨,更何况一个天真的鸟。“爸爸什么都没说。

据有关数据统计,20世纪有110个种和亚种的哺乳动物以及139中亚种的鸟类在地球上消失了,目前,世界上已有593种鸟,400多种兽,209种两栖爬行动物和20000多种高等植物频于灭绝。各位,如果在不保护动物,那地球上以后将会没有一只动物。当我看见动物的血,心头感到了难过的滋味。我真不知道那些人是如何下手的。你们难道就不会受良心上的责备吗?希望大家别再乱捕捉乱杀动物了。记住要保护动物!

展开阅读全文

篇12:初中英语作文大全

全文共 853 字

+ 加入清单

Li Xiaohu spent too much time playing computer games and he fell behind

others. As a good/close friend of his, I must do something to help him.

First, I think it’s very important for him to learn lessons well. He should

spend most of his time on his study instead of computer games.

Secondly, I must tell him that playing computer games too much is bad for

his health, especially for his eyes. So he must give it up. I can play more

sports with him after school. Maybe he will become more interested in sports

than computer games. And then I‘ll ask him to concentrate more on his study. Of

course, I will try my best to help him with all his subjects. I think I can do

it in many fun ways and let him find much fun in studying. At the same time,

I’ll ask both his parents and our teachers to help him, too. If I try these, Im

sure he will make great progress soon.

展开阅读全文

篇13:初中假期的英语作文

全文共 2799 字

+ 加入清单

Great, thats great! At last I was looking forward to the holiday of national day. I can always relax and relax. My parents and I had an early appointment to travel by train during the national day. On this day, I got up early, and when everything was ready, my family set out. When we arrived at the square in front of the train station, it was already a sea of people, and we were crowding the railway station with the endless stream of people.

Into the waiting hall, here is a racket, crowded, we managed to find a space to sit down, I drink slobber, rest for a while, restless eyes began to look around. Not far away, a pair of silver - haired old couple helped each other, slowly sitting on their seats and talking in a small voice. On the other side, a few middle school students were laughing loudly. A tour guide, holding a small flag, is talking to the tourists of the tour group... "Why?" Suddenly, a sound of childish sound attracted me, I looked back, a chubby little girl sat on her mothers lap, "why together and we cant go out and play dad?" The little girl innocent eyes full of doubts, long eyelashes glitter, mother lovingly stroked the girls head, said softly: "your father is a traffic policeman, in order to ensure the safe travel, to the holidays will be more busy, can not go out to play with us." The little girl Sidongfeidong nodded, nestled in her mothers arms. I listened quietly, eyes unconsciously fall in the busy distance from time to time flashed, cleaners are carefully clean the ground, wiping tables and chairs, the policeman is patrols, warily watching the situation around the station staff smiling, patiently answer questions of passengers. It is their hard work that makes our trip safer and more convenient.

This picture, I have been deeply remember in the heart, when we celebrate the holiday with my family, we have to wonder whether this happy, how many people need to work to pay, and the family when we have a joyous gathering, to wonder whether and how many people still insist on work, not and your family reunion? These honorable men, let me say, "thank you!"

太好了,太好了!我终于盼来了国庆节长假,总算可以放松放松了,我和爸爸妈妈早就约好了国庆节期间坐火车去外地旅游。到了这一天,我早早地起了床,一切准备就绪后,我们全家出发了。到达火车站前广场时,那里早已是人山人海,我们随着川流不息的人群挤进了火车站。

走进候车大厅,这里更是人声鼎沸,热闹非凡,我们好不容易才找到空位坐了下来,我喝了口水,休息了一会儿,眼睛开始不安分地四处打量起来。不远处,一对满头银发的老夫妻互相搀扶着,慢慢地坐到座位上,小声地交谈着。另一边,几名中学生在大声地说笑着。一位导游举着小旗子,正在向旅行团的游客们说着什么……。“为什么?”突然,一声稚嫩的童音吸引了我,我回头一看,一个胖乎乎的小女孩儿坐在妈妈腿上,“为什么爸爸不能和我们一起出去玩而呢?”小女孩儿天真无邪的大眼睛充满了疑惑,长长的睫毛忽闪着,妈妈爱怜地抚摸着小女孩儿的头,轻声说道:“你爸爸是一名交通警察,为了保证大家的出行安全,到了节假日会更加忙碌,就不能陪咱们出去玩儿了。”小女孩儿似懂非懂地点点头,依偎在妈妈的怀里。我静静地听着,目光不觉落在了远处不时闪现的忙碌的身影上,清洁工人正在仔细认真地打扫地面,擦拭桌椅,警察叔叔正在四处巡逻,警惕地注视着四周的情况,车站服务人员面带微笑,耐心地解答着旅客的疑问。正是他们的辛勤工作,使我们的出行更加安全、便捷。

这一幅幅画面,都被我深深地牢记在心中,当我们和家人一起欢度国庆假期时,是否想过,我们拥有的这份快乐,需要多少人为之工作,为之付出,当我们和家人欢聚一堂时,是否想过,又有多少人还要坚持工作,不能和家人团圆呢?这些可敬的人啊,让我真诚地说一声:“谢谢您们!”

展开阅读全文

篇14:初中英语作文大全

全文共 559 字

+ 加入清单

Now as the coming of June, which means the summer holiday is drawing near.

I am so excited about the holiday. After studying for four months, finally I can

take a break. I have made up some plans. First, I want to go back to my

hometown. I miss the food and my friends. I also like the clean water and the

blue sky. It is such a great time for me to stay in hometown. Second, I will

travel with my parents. They will take me to the different places and let me

look at the world. I gain a lot of knowledge and broaden my vision. I am so

looking forward to my holiday.

展开阅读全文

篇15:初中英语作文题目

全文共 674 字

+ 加入清单

Guo Jingming is a famous writer in China. I think all the students have

known him. He is also my favourite writer. He was born in 1983. He has published

many books, such as "Visionary"," The Summer Still Doesnt Come"…These books are

very touching.

I often cry and shed bitter tears while I am reading his books. I thought

he was a pessimistic person but now I think he is sensational person. He doesnt

want to grow up judged by this. I think he is pure and naive. Although he is a

writer, he studies well.

I admire him very much. His words are common, but they make people feel

quite close to him. I hope he can write better articles and I want to be a

writer like him when I grow up.

展开阅读全文

篇16:保护野生动物倡议书

全文共 729 字

+ 加入清单

全县父老乡亲、朋友们:

野生动物是人类的朋友,是自然生态系统的重要组成部分,是大自然赋予人类的宝贵自然资源。我国是一个野生动物资源丰富的国家,但是近些年来由于生态环境的恶化、野生动物栖息地的人为破坏,致使我国野生动物的数量、分布范围正日益缩小,许多种类已处于濒临灭绝状态。自从地球上有了人类,我们的命运就与野生动物息息相关,动物作为生物链的重要组成部分,却面临着前所未有的危机。全世界每天都有珍稀动物在灭绝,每天都有成千上万的动物被猎杀。大自然的生态平衡被破坏,益虫被杀,害虫猖獗,森林被伐,灾害频繁;植被破坏,土地沙化......我们的自然生存环境正在恶化,可是我们又能怨谁呢?这难道不是我们这些大自然的主宰者,猎杀动物、砍伐森林、摧毁植物造成的吗?这难道不是我们在自己毁坏生存环境吗?据调查表明,近几年我县城乡餐馆、酒店非法经营野生动物的现象屡禁不止,使得许多已经处于濒临灭绝的野生动物的处境更加艰难。为了保护共同的生态环境,为了保护野生动物资源,为此,我们倡议:

一、从我做起,保护野生动物从餐桌做起,不滥食野生动物,禁止食用野鸭、天鹅,树立饮食文明新风尚;不滥捕、不猎杀野生动物,做文明、守法、有爱心的好公民。

二、关爱动物,保护森林,让茂密的森林成为野生动物的栖息庇护场所。

三、各饲养、运输和餐饮企业不非法经营、贩运、加工、制作、销售野生动物及其制品,做绿色、环保、守法的经营者。

四、人人行动起来,积极劝说阻止、举报各类破坏森林、伤害野生动物的行为,做保护生态环境的模范。

朋友们,为了人类共同的生存环境,为了让汉寿成为更加美好的家园,让我们共同努力,一起行动起来,从我做起,从小事做起;让大地处处充满生命的绿色;让野生动物与我们在同一片蓝天下平安地生活。

展开阅读全文

篇17:环境保护英语作文120字

全文共 787 字

+ 加入清单

I believe the school environment protection are important because students need a quiet and pollution-free environment to study. What we need to do in order to maintain our clean and neat environment to our students? First, we will need to have giant garbage can around each corner. Second, we will need to have school policies regarding littering and spits on the ground, where students and teachers would be fine if they violated the school policies. Third, we also will need to have garbage cans in classrooms, school main entrance, back door, parking lots, basketball court, ect. Last, we will need to announce the school policies, so the students and teachers will need to follow. By doing all this, we can promise the clean and neat environment for our current and future students.

展开阅读全文

篇18:描写风景的初中英语

全文共 1536 字

+ 加入清单

Sunrise at Sea

Ba Jin

I would often get up early to watch the sunrise when it was not yet quiet light and all was quiet except for the droning of the ship engine.

The sky was pale with a bluish blue. Soon a streak of pink dawn broke over the horizon,expanding gradually and becoming brighter and brighter. Knowing that the sun was about to rise, I had my eyes fixed on the distant edge of the sea.

As expected, the sun soon appeared revealing half of its face, which was very red but not bright It kept rising laboriously bit by bit as if weighted down with a heavy burden on its back until,after breaking through the rosy clouds;it completely emerged from the sea aglow with a lovely red. Then,before I knew it, the dark red orb began to shine blazingly, dazzling my eyes until they stung and all of a sudden lighting up the surrounding cloud.

Sometimes,hidden by the clouds, the sun nonetheless shed its rays straight onto the sea water, making it difficult for me to distinguish between the sky and the sea because what I saw in front of me was nothing but a wide expanse of brilliant light.

Sometimes, with thick layers of dark clouds hanging in the sky, the sun was hardly visible to the naked eye. But its radiance managed to show through the dark clouds to edge them with golden lace. Then, after gradually breaking through the tight encirclement, it came into full view and even dyed the dark clouds purple or scarlet. At the moment, apart from the sun,the clouds and the seawater, I too was luminous.

Wasnt that a marvelous spectacle?

展开阅读全文

篇19:初中生英语

全文共 817 字

+ 加入清单

Many people have favorite places they like to go to when they are feeling

sad or bored. I also have favorite places that I go to as often as I can.

Here are the three places that I like most. First of all, I like the zoo.

The animals are amazing because some are so cute and some are so ugly! I like to

pet them,feed them and watch them perform. Museums are cool places, too. They

have good exhibits and fascinating displays. I like the works of art there. Some

museums teach me a lot about history and science. From dinosaurs to robots, I

love them all. Finally, theme parks are my favourite place. I think the roller

coasters are the best. Its fun to scream and get scared.

These places always cheer me up. I try to go to each of my favorite places

once a year. I am going to find more favorite places to go to when I grow

up.

展开阅读全文

篇20:初中英语满分

全文共 587 字

+ 加入清单

I am studying in a middle school now, this is my second year. Studying in

the middle school, I have many subjects to learn, I always want to do the best,

so I focus all my attention on the study. My teacher tells me that I should not

only focus on study, I should go out and take some activities. I refuse to do

what she says, then I get sick easily and I can’t focus attention. So I learn to

do some activities, I play basketball, I find myself really enjoy outside

activities, what’s more, I keep my body well. The study task is not only to

learn knowledge from books, but also take exercise.

展开阅读全文