网络社交危害英语作文（推荐20篇）

Sunflower is a kind of beautiful flower. It has golden color and a round face. It looks like the sun， that is why people call it sunflower. Besides， it looks like a warm smile， too. When you look at it， it seems smile to you. It can bring warm to people. So， I like sunflower very much. During the day， its face turns to the sun all the time. When autumn comes， it is ripe. Therefore， we can eat its seeds. They are very delicious.向日葵是一种美丽的花。它有着灿灿的金色和圆圆的脸蛋，看上去很像太阳，这就是为什么人们叫它向日葵。而且，它看起来像一个温暖的笑脸。当你看着它的时候，它好像在对你微笑。它能够给人们带来温暖。所以，我很喜欢向日葵。白天，它总是面向太阳。秋天来了，它就成熟了。因此，我们可以吃它的种子，它的种子很好吃。

It is known to all that Guangxi province is famous for its various culture,

because there are many minorities. Recent years, the local government carry out

a policy of taking a break on March 3rd, which makes it the special day for

Guangxi Province. People can enjoy some shows which are full of local features,

such as singing local songs, having dragon-lion dance and so on. This policy not

only lets people take relax from routine work, but also makes people remember

their culture. I am part of the local people and I am so proud of the variety.

The different culture makes our country full of charm.

I think everyone likes weekend. Because it’s time for relax and fun. Now I

want to talk about my weekend.

I often spend Saturday for fun. Such as playing basketball with my friends,

watching movies and TV shows, having a trip with family and so on. And I always

spend Sunday for homework and have some rest. Sometimes I visit my grandparents

with my parents. It’s very interesting to visit them.

NO.1 初识网络

在我刚刚接触网络时，是在3岁。

那时我家买了新电脑，小小的我被那个神奇的鼠标迷住了。看着那个闪着光的小鼠标在电脑频幕上一点，就会蹦出来一个个丰富多彩的画面，一会儿是搞笑滑稽的唐老鸭“嘎嘎——”地叫着冲来跑去；一会儿是善良美丽的白雪公主跳着优美的舞蹈；一会儿是不怕困难、聪明机灵的喜羊羊智斗灰太狼。每当看到这些时我就情不自禁的拍起了小手，又蹦又跳。话还说不全的我竟喜欢上了电脑！经过一个多月的“修炼”我无师自通，不但会开机关机、自如地打开网页和关闭网页，更让妈妈感到不可思议的是，我竟然会玩一些简单的小游戏了。

才刚刚3岁的我让妈妈感到惊奇的同时，也有了一些担心。妈妈告诉我，我现在还小，视力没发育好，不能玩电脑。虽然还不太懂妈妈的话，可好奇心浓厚的我依然钟情于那个轻轻一点就会蹦出小人儿的“方盒子”。

NO.2 迷恋网络

渐渐地，在我7、8岁时，我已成为一名“电脑高手”甚至超过了爸爸，有时爸爸还得向我请教呢！

由此，电脑与我结下了不解之缘。随着年龄的增长，我学会了打字、查资料、看新闻，还会玩一些比较复杂的智力游戏和单机游戏，还有了自己的QQ号，没事儿时还能和同学朋友在网络上交流，那种感觉，啊，真美！看着电脑里那丰富多彩的画面，无穷无尽的知识，心里有一种说不出的感受。我非常感谢发明网络的那个人，它给我们带来了多少方便啊！我无法想象，离开电脑，离开网络，我该怎么办？

随着科技的发展，网络内容也越来也丰富，只要你轻轻一点，没有它解决不了的问题。我对网络的痴迷和依赖也越来越重，查资料找它，玩游戏找它，看大片找它……生活中有许多事情都离不开它。我无法摆脱电脑对我的诱惑，我的心早被电脑牵走了。面对我对电脑网络的不正常状态，我们家的首席“总监”——妈妈适时的和我进行了谈话。“总监”说电脑网络是个好东西，是良师、是益友，只要能正确使用它，就能给我带来巨大的帮助。可是里面还隐藏着不可预知的陷阱和魔鬼，有时你不小心点开那些非法网页，就会自动蹦出一些“少儿不宜”的画面，或者侵害电脑的病毒，还有一些暴力游戏和诱惑你不断充钱的游戏等等。所以，为了我的健康成长，我和妈妈共同规定：健康网络1小时的计划。要求除了正常的学习需要，每周上网控制在一小时。

NO.3 邂逅校讯通

直到我上三年级时，李老师让我们每人都参加一个叫校讯通的东东。当我注册后才发现，校讯通就像一个“家”，一个温暖的“家”，一个让我永不舍弃的“家”。

在这里，我认识了很多朋友。有老师，有家长，有小博友，还有校讯通的叔叔阿姨，他们都是我最亲最近的“家人”。每天，不管多累，我都会到“家”里看看我的“家人”，欣赏欣赏我的“家人”发表的，在他们的里和他们一起开心快乐，并写下我的感悟和对“家人”的祝福。我还会参考和学习一下他们的一些写作方法和经验，并用留言的方式留下我的困惑和感悟与大家一起探讨。我有时还用日记的方式记录我每到一个地方的新奇见闻、所想所感、喜怒哀乐，不管是开心的、快乐的、烦恼的，还是悲伤的，我都用键盘打成一行行文字，做成一张张美丽的图片和我的“家人”分享。在这里，我得到了无数从未谋面的“家人”的关心和爱护；在这里，我体会到了成功的喜悦和幸福；在这里，我从一个蹒跚学步的写作菜鸟成长为班级博客之星；在这里，无数关爱我的“家人”激起了我浓厚的写作兴趣，树立起我对写作的坚强信心……

校讯通，让我在电脑网里开辟了一片崭新的天地。它就像一片充满生机的绿洲，在我用心血和汗水的真诚浇灌下，焕发出生命的光彩！

电脑网络，已不再是我玩游戏、看动画的专属，它已经是我生命的一部分，因为它让我体会到了成功和幸福……

感谢网络！感谢校讯通！

The generation gap refers to the difference in attitude toward thing or the

lack of understanding between young people and older folks.

In families as well as in society, the young and the older may not agree

with each other on this and that from time to time. Young people would llke to

make as much money as they could and spend as much money as they could earn

while older folks are easily satisfied with what they earn and save as much as

possible. Young people llke the exciting and deafening pop music while older

folks prefer melodious folk-songs or classic music. A boy and a glrl today may

fall in love with each other as quick as lightning, while their parents or grand

parents might trudge over a long distance before they kissed each other and

became lovers when they were young.

However, we should not be amazed at the generation gap,for it is quite

natural in the development of society. The world is a changing world, in which

everything keeps changing, generations of human beings included. And changes

lead to progress.

Every person needs sleep everyday. But with the high development of

society, most people have more and more things to do and have less time to

sleep. As a result, many people are lack of sleep. For a short time, they may

not realize the bad side of it, but it will bring something bad for them after a

long term. First of all, lack of sleep will do harm to people’s look. If they do

not sleep enough, they will get black eyes and bad skin easily, which will make

people look no so beautiful. Secondly, lack of sleep is bad for the spiritual

outlook. A person who lacking of sleep always looks tired and has no power to do

things. Last, not enough sleep for a long time will have bad influence of

thought. They always can’t be active in mind.

网恋是那么的可怕，一旦染上，想要放弃却是那样的痛苦，网恋和现实中的恋爱其实到最后都是一个结局，那就是分开，然而角度却不同，现实中的恋爱到分开时没有那种痛苦，而网恋却不同。

网恋中当分开时，是那么的舍不得，心会莫名的疼痛，这就是网恋所带来的困扰，以下这个故事，是我亲生经历的。

20XX年夏天，也就是我下学的那天，我慢慢的走进了网络，随后也知道了什么是网络，可是唯一不同的就是所谓的网恋，就这样走进了网络，第一次接触了网恋，随后只保持了三个月，就分开了，20XX年冬天，第二场网恋开始，随后，同样也是三个月，离开了，一直到20XX年冬天，遇到的第三个女孩，应该是我所喜欢的，她清纯，善良，当然也对我坦诚，没有欺骗过我，什么事情都会告诉我。

我们幸福着，缠绵着，只是忘记了，这就是网恋，有时会闹别扭，但是过后还是会好好的，20XX年年末，踏上了回家的路，在汽车上我们发着信息，过完年后，回到了这里，我们继续保持联系，他不曾欺骗我，甚至连我不知道的事情也告诉我，回来后的那天夜里，当时我在睡觉，第二天，我打开手机，想要问她早安，可打开手机之后，看到她在凌晨给我发的信息，他说：阿东，我吐血了，我好怕，看到后，我哭了，因为我也很怕有一天她离开了，我们不在乎网络，不在乎现实生活，只求彼此能够在一起，只是这些，可能都只是虚拟的。

我洗完脸，给她打电话，询问她的情况，可是她不接，直到中午她才会信息，说已经没事了，她害怕失去我，害怕有一天，她会离开，她会想我，每天晚上，总是聊到很晚，这时我们已经距离我们认识已经有5个月了，我们相知，相识，但并不是相爱，这份所谓的爱只是虚拟的。

20XX年4月，我们分开了，我错了，我不该这样子，不该去网恋，这样给自己流下永远的痛，当自己从这场梦中醒来，已是第二天早晨，只能勇敢面对生活，忘记过去。20XX年七月，我一心要走出网恋的阴影，要帮助其他人一同走出网恋，新浪，网易，百度，腾讯各种博客都有我的名字，无泪，是的，永远没有泪水，无泪，永远都是冷漠，无情，没有人性。让无泪清洗整个网络，清洗掉所有的记忆。

网恋的危害极大，它能让一个什么都不懂得男孩，一夜之间变得如此成熟，难道它不伟大吗，网恋就是如此，他正在侵蚀互联网，他正在侵袭我们生活的环境，联起手来，打消它的念想，让互联网恢复正常，朋友们，携起手来，消灭网恋。

朋友们，让我们一切携手，创造另一个网络世界。

As we all know, there are many people smoking, although everyone knows smoking is harmful to us. Giving up smoking is not easy but addicted to it is quite easy, that’s why there are more and more people smoking. Smoking and passive smoking is risk factor that leads to various diseases. It has become world’s top 8 causes of death. More than 90% of lung cancer caused by smoking and lung cancer rates of smokers are 18 times over the non-smokers. Besides, smoking also causes angiocardiopathy, digestive system disease, oral disease and so on. In addition, passive smoking causes great concern in recent years. People have known that passive smoking also do great harm to human, too. Therefore, many countries and regions prohibit people from smoking in public zones, in order to reduce the harm of secondhand smoke. From my point of view, the best way to keep healthy is giving up smoke, for smoker’s own good as well as for others.

众所周知，即使人们都知道吸烟有害健康，但现在依然有很多人吸烟。吸烟容易戒烟难，这就是为什么烟民越来越多的原因。吸烟以及吸二手烟都是导致多种疾病的危险因子，烟草已经成为全球第八大死因。超过90%的肺癌是由吸烟导致的，吸烟者患肺癌的几率是非吸烟者的18倍之多。此外，吸烟也会导致心血管病、消化系统疾病、口腔疾病等。此外，吸二手烟在近些年也引起了人们很多的关注，它也会对人体造成危害。因此，为了减少二手烟伤害，许多国家和地区都禁止人们在公共场所吸烟。我认为，为了自己也为了他人的健康着想，保持健康的最好办法就是戒烟。

Marine biological environment is a complex system including sea water, sea

water, soluble matter and suspended matter, seabed sediments and marine

organisms. The rich biological resources, mineral resources, chemical resources

and power resources in the sea are indispensable human resources treasure

houses, which are closely related to the survival and development of

mankind.

At present, the main objective of marine conservation is to protect marine

biological resources so that they can not be exhausted for sustainable use by

mankind. In particular, priority should be given to the conservation of marine

animals that are valuable and endangered. According to the UN investigation, due

to overfishing, mangrove accidental killing of non target to allow the killing

of marine organisms, the coastal engineering construction, deforestation,

pollution of the marine environment in general, at least 25 of the worlds most

valuable fisheries resources consumed, whales, sea turtles, manatees and many

other marine animal faces the danger of extinction. It is expected that with the

expansion of marine development, it is possible to cause more damage to marine

biological resources.

Marine protection task should first stop on the marine biological resources

excessive use, secondly to protect the marine biological habitat or habitat,

especially their migration, spawning, feeding, avoid Huahai coastline, beaches,

estuaries, coral reefs, to prevent heavy metals, pesticides, oil, organic

produce and eutrophication. Nutrients such as marine pollution. Maintain the

ability of regeneration of marine biological resources and the natural

purification ability of the sea water, maintain the marine ecological balance,

and ensure the sustainable development and utilization of the marine.

It was Mother’s Day. Sun Zheng thought he should do something for his mother.

He decided to help his mother do some housework. After school he went to a shop

to buy some food on his way home.

When he got home, he did his best to cook some nice food,though he couldn’t

do the cooking well. Thenhe cleaned the room. He felt very tired, but he was

very happy.

When his father and his mother came back and saw the clean rooms and dishes

which weren’t so nice, they were very happy.They had their supper together. His

mother said, "Thank you,my child!"

Thanksgiving Day falls on the fourth Thursday of November every year. It is

the most truly American of the national Holidays in the United States. It is a

time for sharing. In the United States, it is their tradition that family

members get together for a reunion to have a traditional big dinner. On the

dinner table, people will find apples, oranges, chestnuts, walnuts and grapes.

There will be plum pudding, mince pie, other varieties of food and cranberry

juice and squash. The best and most attractive among them are roast turkey and

pumpkin pie. Although it is the traditional festival of America, it reminds us

of appreciation.

Recently, I saw a piece of news on the newspaper. This news has a picture

matched. The picture shows that a young lady sitting on the seat of a bus. But

it is strange that an old lady sits on the leg of the young lady, which there

are still many empty seats on the bus. I am totally moved after reading this

news. The old lady is the mother of the young lady. The old lady had some

problem with her back and leg that she couldn’t sit independently. And her

daughter does not want to see her mother stand on the bus in such an old lady,

so I see situation on the picture. Having read this, my eyes become wet. When we

are young, our mother will often carry us if there is any inconvenient, but when

our mother gets old, we seldom carry her.

The ancients had a saying: dripping, the smallest favor. In this world,

there are many people who grace to us. Our parents are the two people who give

us most grace. When we grow up, we need to say our thanks to them. As far as I

am concerned, thanks the people do good to us, especially our parents should be

the theme of our Chinese Thanksgiving Day.

It’s a good option for college students to join the army. Army is the important constitution in a country. Nowadays, many college students prefer to be soldiers. Why?

参军对于大学生来说是一个很好的选择。军队是一个国家最重要的组成部分。如今，很多大学生都愿意去参军，是什么原因呢?

Firstly, there are many preferential policies for college students to join the army, such as tuition waiver, wage subsidy. What’s more, I consider join the army can strengthen our mind. In my opinion, it’s the most important reason to join the army. Whatever you are a student or others, two years’ training can build a strong body, too.

首先，大学生参军有很多优惠政策，如减免学费，工资补贴。更重要的是，我认为参军可以丰富我的想法。在我看来，这是参军最重要的原因，不管你是一名学生或其他人，两年的培训可以练就一个强壮的身体。

I want to join the army. My family is delighted to my decision. Because I want to be a great and strong woman and change my images in front of my friends. More importantly, I would like to experience the army life; I think it will be a colorful moment in my whole life.

我想参军。我的家人对我的决定感到很高兴。因为我想成为一个伟大而坚强的女人，并且改变我在我朋友面前的形象。更重要的是，我想体验一下军旅生活;我觉得那会是在我的整个人生中丰富多彩的时刻。

if you want to understand adversity, take two identical acorns from the same oak tree and plant them in two different locations. plant the first in the middle of a dense forest, and the other on a hill by itself.

要是你想理解什么是逆境，就去拿两颗从同一棵树上摘下来年龄相同的橡树果，并且把它们种到不同的地方。第一颗种在浓密的树林当中，而另外一颗则单独种在一座山上。

heres what will happen. the oak standing on a hillside is exposed to every storm and gale. as a result its roots plunge deep into the earth and spread in every direction, even wrapping themselves around giant boulders. at times it may seem the tree isnt growing fast enough—but the growth is happening underground. its as if the roots know they must ported the tree from the threatening elements.

事情的结果便是这样。那颗长在山上的橡树经历了大风大雨，结果它的根深深地扎进了泥土中间，并不断向四周扩张，甚至把自己置身于巨大的石块当中。有时它可能看起来长的不是很快，但这时它却在地下悄悄生长着，好像它的根知道自己必须快速生长来保护树木免受自然危害的影响。

Novak Djokovic is one of the top tennis players in the world. He has won

many grand slams, which is the greatest honor for a player, but there is only

one grand slam he hadn’t achieved—the French Open. In the last three years, he

was so close to the champion, but was defeated by the final winner. In order to

fulfill career Grand Slam, he practised so hard and never felt depressed. This

year, he came to the final match again, everybody wanted him to win the match,

for they knew how important the champion was to him. At the first game, he felt

a little nervous and lost, but in the second and third game, he found his pace

and controlled the match. At last, he beat his rival and finally fulfilled his

career Grand Slam. The dream was not easy to realized but insistance helps him

wins.

With the development of the science and technology,the computer has been becoing the necessity for people in the 21st Century.Following,network is of close link with our life,bringing us incomparable convenience on our life and work.

Through the network,we can search for useful datas and get to know the current events.When you play computer games after a long-time work,it can relieve your pressure and make you feel relaxed.Besides,playing online games is not all bad,for it can fulfil students entertaining requests as well as practise their response ability.

However,there still exists some disadvantages in the network.The radiation from the computer will do harm to peoples health if you keep on watching the computer for a long time.And short sight may caused by it for your eyes stay tense.At present,there are too many games on the Internet,but some of them are not of good quality even contain some unhealthy content like violence and so on.Duo to the lack of recognizing society and self-protection awareness,some students get addicted in the games and online dating.

In fact,network is not that horrible,as long as we know more about it,it will become our right hand on our studies.Lets build a clean network world together.

随着科学技术的发展,计算机已经做好在21世纪人的必要性。后,网络与我们的生活紧密联系,将我们无与伦比的方便我们的生活和工作。

通过网络,我们可以寻找有用的资料和了解时事。当你玩电脑游戏长期工作后,它可以缓解你的压力,让你感到放松。此外,玩网络游戏并不全是坏事,因为它可以满足学生娱乐的请求以及练习他们的反应能力。

然而,网络中仍然存在一些不足之处。电脑的辐射会危害人们的健康,如果你继续看电脑很长一段时间。和近视可能由于它对你的眼睛保持紧张。目前,在互联网上有太多的游戏,但他们中的一些人不是质量好甚至包含一些暴力等不健康内容。两人认识社会和自我保护意识的缺乏,一些学生上瘾的游戏和网上交友。

事实上,网络并不可怕,只要我们知道更多关于它,它在我们的研究将成为我们的右手。让我们一起建立一个干净的网络世界。

I love reading, which enriches my knowledge and helps me know more about

the world. I love the school atmosphere. Students study together here and make

progress gradually. My favorite place here is library. I can read many books

here. Once I have some questions, I can find a lot of information. We fight for

the goal and plan details in the library in group task. I have so many good

memories to study here, which makes me so happy. No matter which school I am in,

I will always find this quiet corner and study what I like. I love the feelings

there.

I am a child of the suns mother, my name is called the earth. I used to live happy, wake up in the morning, light rain "hua" to give me a bath; People planted many trees and flowers in my body, to get dolled up on me, then, clean running around the sun mother I, let the sun mother look at my new skirt. In the afternoon, the children from school, and I do homework together and play with me together. At night, people also make me very beautiful, they gave me the street lamp, make me golden... The mother said: "the human also is really good, not only your dress is very beautiful, also play with you, you are so blessed, so lucky!"

But now, the human is not as great as the sun mother said. They throw rubbish in my body, I got into a lot of dirty, human "car" still love discharge of tail gas, the rain is full of dirty water, the more I to wash the dirty; People still love the disorderly cut down trees flowers and plants, destruction of street lamp, make clothes and they gave me a bad bad, dirty... The sun mother urged me to say: "you still get rid of those humans!" But the good and I dont have the heart to leave them. Because it make me a bad meal every day, sleep well, so, I got sick, floods, earthquakes often... Some said 2012 could be the end of me. People in the disaster, are aware of this they destroy me, and they began to care about me, love me! I believe in the days that followed, I will become more beautiful, beautiful!

我是太阳妈妈的孩子，我的名字叫地球。我以前生活的很快乐：早上一醒来，小雨就“哗啦啦”地给我洗澡;人们在我身上种了很多花草树木，把我打扮得漂漂亮亮的，然后，干干净净的我就围着太阳妈妈转来转去，让太阳妈妈看看我的新裙子。下午，孩子们放学了，就和我一起写作业，一起和我玩。晚上，人们也把我打扮的很漂亮，他们给我身上安上路灯，把我打扮的金灿灿的……太阳妈妈说：“人类还真好，不仅把你打扮的很漂亮，还和你一起玩，你真是太有福气，太幸运了!”

可是现在，人类也不像太阳妈妈说的那么好了。他们在我身上乱扔垃圾，把我搞得浑身脏兮兮的，人类的“车”还爱排放尾气，雨下下来的全是脏水，把我越洗越脏;人们还爱乱砍伐树木花草，破坏路灯，把他们给我的衣服也搞得的烂烂的，脏脏的……太阳妈妈劝我说：“你还是摆脱那些人类吧!”可是好心的我又不忍心丢下他们。因为这件事让我每天吃不好饭，睡不好觉，所以，我就生病了，经常发洪水、地震……还有人说2012年可能是我的末日。人们在这些灾难中，意识到了这都是他们破坏我而造成的，于是他们又开始关心我，爱护我了!我相信以后的日子里，我一定会变得更加美丽、漂亮的!

Girls at a training course offered by the "Care for Girls" program in

Qingjian county, Shaanxi province, talked about their pursuit of dreams despite

living in unfavorable conditions.

Initiated by the National Health and Family Planning commission in 2013,

the program helps girls in underdeveloped regions to build their self-esteem and

self-confidence.

"I want to be a teacher teaching Chinese because I like Chinese and

writing," Xi said. "By teaching I can not only share knowledge with my students,

but also keep learning new things from new versions of textbooks."

She is living with her mother in a room that has no bathroom and costs 300

yuan ($48) a month to rent. Merit certificates she received from school are

displayed on the wall. Yan Lingling, Xis mother, said she is proud of her

daughter.

According to the family planning policy, couples in which both the husband

and wife have rural residential permits can have another child if their first is

a daughter. Yan said she isnt planning on adding to the family because she

wants to give her daughter the best she has.

"My husband is away most of the time, working in construction sites and

making no more than 30,000 yuan ($4,840) a year. I work as an hourly worker

sometimes. The rent of our apartment is expensive. One more child means one more

burden," Yan said.

Speaking about how she plans to achieve her dream of becoming a teacher, Xi

said: "I will not give up on my dream easily, though I know it may be difficult.

When something becomes difficult, it only makes me want to try harder."

The Chinese economy will continue its steady development in the tuture

this optimistic prediction was based on continuity and stability of macro-economic policy, coming benefits of World TradeOrganization entry, strengthening of tertiary industry, and expected profits from growth markets including housing, travel andculture.

other factors driving steady growth of the economy in the long run include globalization of the economy, urbanization, the combination of industrialization with development of the information industry, and the growing

Cars and Air Pollution

Too many cars have created a lot of serious problems in our world. Besides congestion, accidents and fast fuel consumption, cars are responsible for a good part of air pollution in big cities. All the time, they are pumping huge amounts of waste gases into the atmosphere. These gases are very harmful, causing disease and even death.

One possible solution is to design and develop clean cars and clean fuels. In Shanghai, some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as the petrol. But it may take decades for the new models of clean cars completely replace the traditional ones. Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not buy private cars. And the total number of cars in big cities will reduce greatly.

On the whole, the elimination of air pollution needs the collective efforts from the government, the public and the environmentalists.

Scientists

believe an animal source is "the most likely primary source" but that some

human-to-human transmission has occurred.

科学家认为动物是“最有可能的初始感染源”，不过，也有一些人传人的病例。

Signs

of infection include respiratory symptoms, fever, cough, shortness of breath and

breathing difficulties.

感染症状包括：呼吸道症状，发烧，咳嗽，呼吸短促，呼吸困难等。

2019-nCoV,

as its been labelled, is understood to be a new strain of coronavirus that has

not previously been identified in humans.

这种新型冠状病毒(2019-nCoV)此前未在人类身上发现过。

Coronaviruses

are a broad family of viruses, but only six (the new one would make it seven)

are known to infect people.

冠状病毒是一个庞大的病毒家族，目前已知会感染人类的有六种(新发现的这种是第七种)。