日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

精英家教網 > 高中英語 > 題目詳情

C

When the first European arrived in the land now called Canada, around 400 years ago, there were about 350,000 native people living there. Most of these people were later forced to live in separate places, called reserves, away from the cities where the Europeans settled.

The French and the British both settled in Canada and fought for the control of it. Finally in 1763 Britain defeated France and Canada became a British colony. Today both English and French are the official languages of Canada. Most French-speakers live in Quebec Province.

Canada became a separate country from Britain in 1867. At that time it had a population of 3.4 million. Today Canada’s population is 30 million as a result of immigration(移民).

The first Chinese immigrated to Canada in the late 1800s. More have recently arrived and like to live in either Toronto, Canada’s largest city, or in Vancouver on the Pacific coast.

Canada is a cold, northern country with long winters, so winter sports are popular. Ice hockey is known as Canada’s national sport. However, Canadians also like to make the most of the short summer and enjoy picnics by the lakes or hiking in the mountains.

Canadians love to travel across their huge country and usually do so by car. But to get to some places you need to take a ferry. Really long journeys from the east to the west coast are taken by train or by plane.

Canadians celebrate many different holidays. One of the most important is Canada Day on July 1st which recalls when Canada became united. Another important day honors Britain’s Queen Victoria. It is called Victoria Day and is held on the last Monday in May. Like the USA, Canada also celebrates Thanksgiving.

59. We can infer from the first paragraph that _________________.

A. Canada has a history of about 400 years long

B. Europeans are the first people to arrive in Canada

C. Native Americans were not treated equally in Canada

D. Europeans and Native Americans always lived peacefully together

60. The first Chinese immigrants to Canada _______________.

A. came in 1867                                           B. lived in Toronto and Vancouver

C. added up to 30 million                              D. arrived in the late nineteenth century

61. The underlined part in the fifth paragraph is closest in meaning to _________________.

A. to make full use of                                          B. to offer the best of

C. to give up the biggest joy of                      D. to work through most of

62. The passage is mainly about ______________.

A. the history of Canada                           B. transport in Canada

C. basic knowledge about Canada                   D. the geography of Canada

 

【答案】

59-62  CDAC 

【解析】略

 

練習冊系列答案
相關習題

科目:高中英語 來源: 題型:閱讀理解

The whole body is covered with skin.The surface of the skin is dead(like the hair and the nails),but it is made from a living layer(層)just under the surface.The outside dead layers wear off(磨損)all the time,with new ones replacing them,and the body forms a totally new skin every three weeks.

The skin protects the body from the outside world and it passes information from the outside.It helps to keep water in the body and to keep the body at the same temperature.Becteria(細菌)can’t get in through the skin unless it is damaged.

If the weather is cold,the blood vessels(血管)in the skin squeeze down,or contract(收縮),so that as little blood as possible comes near the surface.This means that less warmth is lost to the outside.This makes the skin look pale,or even “blue”.At the same time,the hairs on the skin are pulled upright by tiny muscles.

When it is hot,the blood vessels expand(擴大),or get wider again,to allow plenty of blood to run near the surface of the skin.This helps the body to lose heat,and the skin may look red.At the same time,the sweat glands(汗腺)produce more sweat,which cools the skin.

If your skin has ever been numb(麻木的),you will realize how important the feeling from the skin is.Nerves(神經)in the skin are sensitive(敏感的)to heat and cold,sharpness,hardness and softness,wetness and dryness and pain.If one is not able to feel these things,which can act as warnings,he is likely to be burned,cut or hurt in other ways.

The colour of the skin depends on special colour cells(細胞).These are just below the top layers of the skin.They are needed as protection from some harmful ray of the sun.The stronger the sun is,the more important it is to have a dark skin.People with pale skins may “tan”(曬黑)in the sun.This happens when the body produces extra colour cells in the skin for protection.In the sun,the skin produces a vitamin(vitamin D)which is needed for strong bones.

Which of the following statements is NOT true?

A.Our hair and nails are dead like the surface of the skin.

B.There is skin all over our body.

C.The skin of our bodies will be completely different in three weeks.

D.The surface of the skin is made of a living layer.

The second paragraph mainly tells us about______.

A.the functions of the skin

B.the information from the outside

C.the water in the body

D.the temperature of the body

Bacteria will get in through the skin______.

A.when one’s skin is numb

B.when one is ill

C.when the skin is cut

D.when the sweat glands produce more sweat

When the weather is cold,the skin will contract in order to______.

A.allow more blood near                                     B.make the skin look blue

C.keep warmth                                              D.help the body lose heat

The colour of the skin is determined by______.

A.the rays of the strong sun                                 B.colour cells

C.top layers of the skin                                       D.vitamin D

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

In the long discussion of water on the Moon, a new study contradicts(與……相矛盾)) some recent reports that say the Moon had water at the time of its formation. A group of researchers reported in the journal Science that when the Moon was created, some 4.5 billion years ago, there was not much hydrogen(氫氣) on it, and therefore no water.

The researchers surveyed and evaluated this by analyzing chlorine isotopes(氯同位素) found in lunar rock samples from Apollo missions. The range of chlorine isotopes in lunar samples was 25 times that found in samples from Earth.

If the Moon had significant levels of hydrogen, as Earth did, this range would have been far less, said Zachary D Sharp, a scientist in the Department of Earth and Planetary Sciences at the University of new Mexico and the study’s lead authour.

The chlorine would have stuck together with hydrogen, forming compounds like hydrogen chloride, and escaped from the Moon’s surface, he said. The abundance of chlorine indicates a lack of hydrogen and water.

“ The amount of water on the Moon was too low for life to possibly have existed there,” he said.

Most scientists believe the Moon was formed when a large object stuck Earth, breaking off a chunk(a vast piece) that has since orbited Earth.

On Earth, goes one theory, water was released as steam form molten basalts(玄武巖) over time, eventually forming bodies of water.

“An understading of whether the Moon was dry or wet will help us understand how water appeared on Earth,” Dr Sharp said.

A new study indicates that _____ on the moorn.

   A. there is plenty of water              B. water is unlikely to exist

   C. water existed in the past             D. there is a little water now

The author would like to tell us ______ through the sixth paragraph.

  A. why there is no water on the Moon     B. how the Moon was formed 

  C. when the Earth struck the Moon       D. where the Moon orbited

  Which is NOT true according to the passage?

  A. Zachary D. Sharp, a scientist of New Mexico was in charge of the new study.

  B. Chlorine isotopes in lunar samples are 25 time larger than those on the Earth.

  C. The more aboundant chloride, the shorter hydrogen and water.

  D. The new study is benificial to understand how water appeared on Earth.

What can we learn from the passage?

  A. There is enough water on the Earth.

  B. Hydrogen chloride easily escaped from the Moon’s surface.

  C. The Earth had significant levels of hydrogen.

  D. Water on the Earth is directly from molten basalts.

查看答案和解析>>

科目:高中英語 來源:福建省漳州市2009—2010學年度高二下學期期末聯考試卷(英語) 題型:閱讀理解


Some fish form huge schools. Could fish set up schools and teach their children how to survive in the ocean? You may ask. No. Here the “schools” are not the places where you study. They are fish shoals (魚群) that cover tens of kilometers. What causes hundreds of millions of fish to gather and move together is one of biology’s mysteries.
Darkness appears to be the first step to the creation of shoals, according to a study published in the March 27 journal Science. A team of researchers from the Massachusetts Institute of Technology (MIT) and five other institutions studied Atlantic herring (鯡魚), which forms shoals on a fishing ground off Massachusetts. They used an underwater imaging technology and fish-finding sonar (聲納) to observe the herring over several days in autumn when they spawn (產卵).
They found that, as the sun set, fish in scattered (分散的) groups began swimming much closer to one another than they normally do. When the number of fish reached a certain point in an area, this set off a chain reaction of similar behavior that spread like a sound wave through the water.
The herring’s movement seemed to be started by sunset. The team didn’t record the breakup of these shoals, but a previous study suggested that as the sun rose, the shoals fell apart.
“When the light fades (逐漸消失), it’s safer for the fish to move away from the seabed,” says Nicholas Makris, a professor at MIT who led the research. “Once they have a certain number of other fish, they suddenly come together - forming a shoal covering tens of kilometers within tens of minutes.”
Herring form shoals to migrate during the autumn spawning season. Some shoals were 40 km across and 30 m from top to bottom. They formed in deep water and moved into more shallow waters to spawn.
Forming shoals helps protect them from predators (掠食者) by giving them simple strength in numbers. The ordered movement of the shoal means the fish can reach their spawning ground more quickly and more safely.
Scientists have never before gathered information on so many animals acting together. Understanding these herring shoals could lead to more ideas about what causes animals to move in schools, says Iain Couzin, a biologist at Princeton University, US.
1. Which school in the following expressions is used the same way as the underlined one in the first paragraph?
A. schools of thoughts       B. school a horse   C. a school of whales       D. a medical school
2. Which of the following statements is true?
A. There are more large shoals of herring at night than in the daytime.
B. The research on Atlantic herring was conducted independently by the Massachusetts Institute of Technology.
C. The larger the shoal of herring is, the more slowly it moves.
D. Scientists have found out the reason why fish gather and move together in huge shoals.
3. According to the research, herring tend to get together except ______.
A.when there are predators around  B. when they spawn C. when the sun sets  D. when the sun rises
4. What seems to be the main reason for herring to gather and move together?
A. To avoid the darkness.
B. To keep other kinds of fish out of their spawning ground.
C. To spawn in the shallow waters.
D. To make themselves feel safe.

查看答案和解析>>

科目:高中英語 來源:2013-2014學年四川省高三2月月考英語試卷(解析版) 題型:閱讀理解

Yawning sends out certain messages -either “Oh ,this movie is so boring” or “I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is overheated?

A new study, led by a research team at Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.

The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.

When people yawn, their jaw is also stretched ,which increases blood flow and may also help cool the brain

The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.

However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.

According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.

1.The purpose of the experiment is ______.

A.      to prove people yawn in winter and in summer equally

B.      to indicate brain can regulate temperature naturally

C.      to find the frequency of people’s yawning

D.      to show the real reason why people yawn

2.The information we get from Paragraphs 5 and 6 is that ______.

A.      longer outdoor summertime results in more yawns

B.      yawning frequency changes with outdoor time

C.      yawning frequency increases with outdoor time

D.      longer outdoor wintertime leads to fewer yawns

3.Acorrding to the text ,people yawn more often ______.

A,      when the air temperature is lower outside the body

B.      when the hot air breathed in makes the brain hotter

C. when the air temperature is higher than the body

D. when the air temperature is equal to the body

4.What could be the best title for the text?

A.      Yawning Is A Sign of Brain Disease

B.      Yawning Carries Some Information

C.      Yawning Benefits Your Body

D.      Yawning Cools Your Brain

 

查看答案和解析>>

科目:高中英語 來源:20102012遼寧葫蘆島一高高二下學期第二次月考英語試題 題型:單項填空

It disappointed his parents___he had failed to pass the exam for ______third time.

  A. because ; a       B. that; a          C. when; the        D. that; the

 

查看答案和解析>>

同步練習冊答案
91亚洲一区二区| 欧美日韩国产高清| 国产韩日精品| 成人观看网址| 激情成人四房播| 国产在线观看网站| 在线免费观看你懂的| 亚洲欧美另类日韩| av高清一区二区| 97人妻精品一区二区三区视频| 国产精品成人国产乱| 午夜激情视频在线播放| 91精品人妻一区二区三区蜜桃欧美| 91精产国品一二三产区别沈先生| 日本女优爱爱视频| 99爱视频在线| 久久美女福利视频| 日日摸日日碰夜夜爽无码| 欧美一级黄色录像片| 一区二区精品免费视频| 亚洲精品乱码视频| 亚洲在线观看一区| 在线看成人av电影| av磁力番号网| 男人天堂网站在线| 性一交一乱一伧国产女士spa| 日韩一级片一区二区| 日韩精品福利片午夜免费观看| 中文字幕一区二区三区四区五区六区| 日本一区二区免费看| 欧美精品亚洲| 亚洲春色综合另类校园电影| 一区二区三区四区国产| 伊甸园精品99久久久久久| av不卡在线免费观看| 天天成人综合网| 亚洲激情免费视频| 97超碰青青草| 超碰超碰在线观看| 国产精品二区视频| 亚洲乱码国产乱码精品精大量| 三级电影在线看| 日本性高潮视频| 欧美第一页在线观看| 18精品爽视频在线观看| 亚洲图片在线视频| 99视频国产精品免费观看a| 免费国产黄色片| 深夜福利在线观看直播| 99青草视频在线播放视| 日本天码aⅴ片在线电影网站| 丁香花在线观看完整版电影| 日韩av首页| 91亚洲无吗| 欧美日韩精品一区二区视频| 欧美黄色一区| 日欧美一区二区| 丁香婷婷深情五月亚洲| 久久天天做天天爱综合色| 亚洲欧洲在线观看av| 亚洲成va人在线观看| 欧美视频在线观看一区二区| 精品国产一区二区三区av性色| 国产亚洲欧洲黄色| 国内精品国产三级国产在线专| 国产精品美女www爽爽爽视频| 国产精品国产精品国产专区不卡| 亚洲精品白虎| 麻豆av免费在线| 欧美一级片黄色| 久久午夜鲁丝片午夜精品| 中文字幕永久在线| 最新av在线| 高清电影在线观看免费| 综合久草视频| 婷婷精品进入| 精品一区中文字幕| 中文字幕一区二区在线观看| 欧美性色xo影院| 亚洲精品美女免费| 91精品国产99| 欧美激情www| 国产成人无码一二三区视频| 三级男人添奶爽爽爽视频| 欧美成人精品欧美一| 国产特级黄色片| 在线观看精品一区二区三区| 精品肉辣文txt下载| 精品毛片免费观看| 麻豆91精品视频| 亚洲色图20p| 日韩精品最新网址| 欧美大片在线影院| 国产精品青青草| 伊人成色综合网| 波多野结衣福利| 中文字幕在线天堂| 欧美人体大胆444www| 欧美成人影院| 亚洲乱码在线| 不卡一区在线观看| 在线免费观看日本一区| 一道本无吗dⅴd在线播放一区| 国产精品久久久久久久久久久久久久 | 丝袜久久网站| 蜜臀av国产精品久久久久| 亚洲欧洲三级电影| 亚洲精品国产精品乱码不99按摩 | 亚洲精品久久久久中文字幕二区| 国产成人精品av在线| 伊人久久大香线蕉精品| 日批视频免费看| 波多野结衣在线观看一区| 91caoporn在线| 卡通动漫精品一区二区三区| 日韩精品电影在线观看| 一区二区成人在线| 中文字幕欧美国内| 国产精品初高中精品久久| 能在线观看的av网站| 久久人妻无码aⅴ毛片a片app| 午夜视频1000| 精品三级在线| 久久在线91| 亚洲第一久久影院| 成年无码av片在线| 蜜桃久久精品乱码一区二区| www.51色.com| www.亚洲激情| 超碰中文在线| 欧美日韩国产探花| 一色桃子久久精品亚洲| 亚洲香蕉成人av网站在线观看| 丁香婷婷久久久综合精品国产| 亚洲三级视频网站| 日本中文字幕久久| 美女91在线| 欧美日韩精品| 亚洲一区二区三区四区五区中文 | 26uuu亚洲国产精品| 亚洲中文字幕无码一区二区三区 | 国产精品一区二区三区毛片淫片| a在线视频观看| 午夜精品久久久久久久久久久久久蜜桃| 韩国福利在线| 欧美精品一区二区三区精品| 国产视频一区在线播放| 亚洲欧美日韩国产精品| 久久精品国产精品青草色艺| 青青草视频网站| 人成网站在线观看| 91成人短视频| 91欧美激情一区二区三区成人| 精品久久久久久久久久久久久久久久久 | 免费看久久久| 久久久久久97三级| 最近中文字幕mv在线一区二区三区四区 | 亚洲国产精品ⅴa在线观看| 一本一道久久a久久精品逆3p | 在线不卡免费欧美| 成人欧美一区二区三区视频| 亚洲美女在线播放| а√最新版地址在线天堂| 韩国女主播一区二区三区 | 麻豆av一区二区三区| 国产精品jizz| 国产天堂在线| 91精品国产乱码久久久久久| 亚洲午夜av在线| 国产a∨精品一区二区三区不卡| 欧美日韩亚洲一二三| 夜夜狠狠擅视频| 成人精品视频在线观看| 成人黄色av网站在线| 在线播放国产一区中文字幕剧情欧美| 中文字幕一区二区中文字幕| 久久9999久久免费精品国产| h片在线观看下载| 免费成人在线影院| 亚洲电影免费观看高清| 三级三级久久三级久久18| 免费高清在线观看电视| 成人看av片| 蜜桃视频一区二区三区在线观看| 日韩欧美久久久| 日韩精品欧美专区| 国产午夜小视频| 亚洲第一二三四区| 粉嫩av一区二区三区在线播放| 亚洲日本欧美中文幕| www.99riav| 又色又爽又黄无遮挡的免费视频| 国产视频一区二区在线播放| 国产婷婷一区二区| 性欧美长视频免费观看不卡| aaa一级黄色片| 在线播放免费| 国产精品多人| 日韩久久免费av| 潘金莲一级淫片aaaaa免费看| 精人妻无码一区二区三区| 一区二区三区国产好| 亚洲日本青草视频在线怡红院| 日韩av电影手机在线观看| 日韩精品一区二区三区高清免费| av基地在线| 麻豆成人久久精品二区三区小说| 国产偷亚洲偷欧美偷精品| 日韩 欧美 视频| 亚洲精品久久久久久无码色欲四季 | 国产伦精一区二区三区| 插插插亚洲综合网| www.日本久久| 日韩精品毛片| 国产一区激情在线| 欧美大片在线免费观看| 大尺度在线观看| 欧洲黄色一区| 2020国产精品久久精品美国| 情事1991在线| 久久久久久久久福利| 亚洲精品永久免费视频| 欧美激情在线观看视频免费| 国产欧美亚洲视频| 国产亚洲第一页| 亚洲国产精品免费视频| 五月综合激情日本mⅴ| 免费在线成人av电影| 无码免费一区二区三区| 国产剧情一区| 欧美一区二区三区的| 91成人在线观看喷潮教学| 免费男女羞羞的视频网站主页在线观看 | 亚洲成人人体| 综合色中文字幕| 国产日韩三区| 一级片在线观看视频| 亚洲综合色站| 亚洲美女动态图120秒| 亚洲欧美视频二区| xvideos国产在线视频| 成人国产精品免费观看动漫| 国产精品99蜜臀久久不卡二区| 精品国产视频在线观看| 精品福利网址导航| 51久久夜色精品国产麻豆| 青青草成人免费在线视频| 性xxxx丰满孕妇xxxx另类| 久久99国内精品| 日韩av黄色在线观看| 印度午夜性春猛xxx交| 乱亲女h秽乱长久久久| 51精品秘密在线观看| 五月婷婷狠狠操| 成人三级网址| 国产精品福利av| 日韩国产精品一区二区| 四虎永久在线观看| 蜜桃精品在线观看| 国产成人精品视频| 国产精品黄色大片| 性xxxx欧美老肥妇牲乱| 国产一区二区黄| 亚洲精品乱码久久久久久不卡| 电影亚洲精品噜噜在线观看| 欧美日韩国产中文精品字幕自在自线| 综合久久国产| 成年人在线观看视频| 99国产精品久久久| 国产日韩精品推荐| 动漫av一区二区三区| 精品综合免费视频观看| 国产精品久久久久久久久久久新郎| 啦啦啦免费高清视频在线观看| 色综合蜜月久久综合网| 国产亚洲在线播放| 中字幕一区二区三区乱码| 国产+成+人+亚洲欧洲在线| 精品国产一区二区亚洲人成毛片| 九九热视频免费| 欧美黄色a视频| 欧美一区二区三区白人| 天天色天天综合网| 欧美爱爱视频| 91精品综合久久久久久| 色网站在线视频| av日韩一区| 精品国产露脸精彩对白| 99久久久无码国产精品性波多 | 日本一区二区不卡在线| 欧美高清不卡| 欧美在线视频网| 中文字幕+乱码+中文| 天堂一区二区在线| 国产精品久久久亚洲| 99国产揄拍国产精品| 久久99精品视频| 国产精品二区在线观看| 亚州男人的天堂| 久久久欧美精品sm网站| 亚洲二区三区四区| 国产在线观看a| 亚洲成人自拍网| www.欧美日本| 欧美黄色成人| 亚洲免费小视频| 一区二区国产精品精华液| 欧美 日韩 国产一区二区在线视频| 欧美激情极品视频| 一级黄色av片| 国产美女精品一区二区三区| 动漫3d精品一区二区三区| 午夜影院在线免费观看| 亚洲欧美综合在线精品| 少妇人妻在线视频| 亚洲电影有码| 亚洲第一页在线| 久久高清内射无套| 日韩天天综合| 成人免费看片网站| 欧美美乳在线| 婷婷开心久久网| 亚洲熟女乱综合一区二区| 一本久久青青| 97国产一区二区精品久久呦| 国产又粗又黄视频| 91蜜桃视频在线| 亚洲人成无码网站久久99热国产| 亚洲四虎影院| 亚洲天堂网在线观看| 国产黄色片免费看| 国产一区二区美女诱惑| 亚洲最大色综合成人av| 国产福利电影在线播放| 精品少妇一区二区三区在线播放| 成年人在线免费看片| 亚洲无毛电影| 成人动漫视频在线观看免费| 你懂的在线播放| 色婷婷综合中文久久一本| 日韩 中文字幕| 亚洲电影在线一区二区三区| 国产日韩精品综合网站| 日本大臀精品| 在线视频一区二区三| 国产精品亚洲无码| 亚洲精品影视| 美女被啪啪一区二区| 最新黄网在线观看| 日韩欧美国产一区二区在线播放| 欧美黑人精品一区二区不卡| 蜜乳av一区二区三区| 亚洲欧洲免费无码| 中文字幕av一区二区三区佐山爱| 亚洲欧美日韩精品久久| 黄色污污网站在线观看| 97久久精品人人澡人人爽| 久草综合在线观看| 亚洲精品中文字幕99999| 国产精品久久久| 9191在线| 精品久久五月天| 337p粉嫩色噜噜噜大肥臀| 久久精品视频免费| 中文字幕第一页在线视频| 成人高清电影网站| 亚洲综合精品一区二区| 18+视频在线观看| 日韩av中文字幕在线免费观看| 无码任你躁久久久久久久| 久久久久国产一区二区三区四区 | 国产精品美女久久久| 日韩一区二区三区资源| 福利一区和二区| 久久久久免费视频| 污视频在线观看免费| 欧美日韩不卡一区二区| 久久午夜无码鲁丝片午夜精品| 不卡一卡二卡三乱码免费网站| 草草草在线视频| 99久久久久| 欧美人与物videos另类| 欧美成人毛片| 欧美在线观看视频| 国产区在线观看| 精品亚洲永久免费精品| 国产高清视频免费| 日韩欧美在线播放| 精品亚洲永久免费| 久久天堂av综合合色蜜桃网| 国产乱国产乱老熟300部视频| 亚洲欧美久久| 免费人成自慰网站| 大片网站久久| 欧美日韩精品免费看| 亚洲精品在线播放| 91在线观看免费观看 | 免费久久99精品国产| 欧美a v在线播放| 中文字幕人成人乱码|