The chances are that you’ve walked past a QR Code(二維碼) or come into contact with one recently, possibly without noticing. Even if you haven’t seen one before, here are some examples for you.
But what exactly are QR Codes? Very simply, they are bar-codes, not too dissimilar to the bar-codes you saw on the package of almost every product you bought. QR Codes are combined with multiple rows and columns(列), which allows QR Code to stone its data.
QR Codes started out in the East but their popularity exploded worldwide within a few years. They are flexible, cheap, easy to read by scanners as simple as an App on your smart phone and easy for anybody to create. The direction of reading the QR codes is not limited. Even when damaged there is a chance that they are still readable. Unlike traditional bar-codes which are 1 dimensional (using 1 row of lines), QR Codes use 2 dimensions, which allows them to store a lot more data in the same area of space.
But can a picture or music be stored in a QR Code? Images and sounds consume much more data than text and a QR Code is limited to storing 3kb of data. The size of an image will need to be made so small to be stored that it will be impractical to do so. So it is with songs. In fact if you have a need to present the user with an image or kick off a music stream when they scan your QR Code, why not look to host it somewhere and then have your QR code simply linked to the content?
Not only have QR Codes surely brought us great convenience, but also security concerns at the same time. For example, a QR Code may be covered by one designed by a cheater on purpose, without being recognized. You sign up entering all your account details only to find the following day someone has gained access to your account because of the information you entered in that website.
1.What do we know about QR Codes?
A. They can be scanned from any direction
B. They use 1 row of lines to store data.
C. They are readable when damaged.
D. They are flexible but not cheap.
2.Which is one big drawback of QR Codes?
A. A QR Code can be linked to somewhere else.
B. QR Codes cannot be used to present a picture.
C. A QR Code can store data of no more than 3kb.
D. QR Codes can only be read with an app on your smart phone.
3.From the text we can infer that _______.
A. traditional bar-codes have an advantage over QR codes in storing data
B. we had better pay attention to the security when using QR codes
C. it makes sense to store a song of a picture in a QR code
D. QR Codes are so dangerous that they are not worth using
4.The text mainly talks about______.
A. the use of QR Codes
B. the disadvantages of QR Codes
C. the advantages of QR Codes
D. the formation of QR Codes
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科目:高中英語 來源: 題型:閱讀理解
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科目:高中英語 來源:2016-2017學(xué)年河北省唐山市高二下學(xué)期期中考試英語試卷(解析版) 題型:閱讀理解
Hans Christian Andersen is a Danish writer famous for his fairy tales, many of which depict (描述) characters who gain happiness in life after suffering and conflict.
Andersen’s father was a poor shoemaker and his mother worked as a washerwoman. As a child he was highly emotional, suffering all kinds of fears and shame because of his unmanly interests. Encouraged by his parents, he composed his own fairy tales and arranged puppet (木偶) theater shows. At the age of 14, Andersen moved to Copenhagen to start a career as a singer—he had a beautiful voice. He succeeded in becoming associated with Royal Theater, but he had to leave it when his voice began to change. When casually referred to as a poet, he changed his plans and began to write plays, all of which were refused.
In 1822, Jonas Collin, the director of the Royal Theater, gave Andersen a grant to enter the grammar school at Slagelse. In 1827, Andersen gained admission to Copenhagen University, where he completed his education. In 1828 he wrote a shot story on travel, a fantastic tale in the style of the German Romantic writer, E. T. A. Hofmann. He traveled widely in Europe and remained a passionate traveler all his life.
As a novelist, Andersen made his breakthrough with The Improvisatore. The story described a poor boy’s integration (融合) into society, an Ugly Duckling theme of self-discovery. The book gained international success and remains the most widely read of all his works.
In his early collections, Andersen returned to the stories that he had heard as a child, but gradually he started to create his own tales. Most of Andersen’s works were original. Only 12 of his 156 known fairy stories drew on folktales.
The ugliness of the hero or heroine in his stories often conceals (隱藏) great beauty,which is revealed (揭示) after misfortune. Some of Andersen’s tales reveal a positive belief in the victory of the good, among them, The Snow Queen and The Ugly Duckling, and some end unhappily, like the Little Match Girl. In The Little Mermaid the author expressed a longing for the ordinary life that he had never had. Andersen never married, and he died in his home in Rolighed in 1875.
1.Why did Andersen leave the Royal Theater?
A. He no longer had a beautiful voice.
B. He would rather become a poet than a singer.
C. He wanted to travel abroad instead.
D. He had to go to school to study.
2.Which of the following statements is TRUE about Andersen?
A. Most of his works came from folktales he had heard.
B. The early plays he wrote achieved great success.
C. He had an unhappy life in childhood.
D. His parents were against his effort to compose fairy tales.
3.What did Andersen try to express in The Little Mermaid?
A. Happiness gained after suffering and conflict.
B. The desire for an ordinary life.
C. The failure to fit into society.
D. Great beauty concealed by ugliness.
4.What is the text mainly about?
A. How Andersen led his childhood.
B. How Andersen’s works finally became well-known.
C. The excellent works of Andersen.
D. An introduction to Andersen’s life and works.
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科目:高中英語 來源:2017屆河北省高三下學(xué)期第1周周測(cè)英語試卷(解析版) 題型:完形填空
Where do you go when you want to learn something? A friend? A tutor? These are all _______places of learning. But it may well be that the learning you really want _______somewhere else instead. I had the______ of seeing this first hand on a ______.
My daughter plays on a recreational soccer team. They did well this season and so_______ a tournament, which normally was only for more skilled club teams. This led to some ______experiences on Saturday as they played against teams ______ trained. Through the first two games, her_______ did not get one serious shot on goal. As a parent, I______ seeing my daughter playing her best, _______still defeated.
It seemed that something clicked with the ______ between Saturday and Sunday. When they _______for their Sunday game, they were _____ different. They had begun to integrate (融合) the kinds of play and teamwork they had _______the day before into their______ . They played aggressively and _______scored a goal.
It _______me that playing against the other team was a great _____ moment for all the girls on the team. I think it is a general principle. _____is the best teacher. The lessons they learned may not be________what they would have gotten in school, but are certainly more personal and meaningful, because they had to work them out on their own.
1.A. public B. traditional C. official D. special
2.A. passes B. works C. lies D. ends
3.A. dream B. idea C. habit D. chance
4.A. trip B. holiday C. weekend D. square
5.A. won B. entered C. organized D. watched
6.A. painful B. strange C. common D. practical
7.A. less B. poorly C. newly D. better
8.A. fans B. tutors C. class D. team
9.A. imagined B. hated C. avoided D. missed
10.A. if B. or C. but D. as
11.A. girls B. parents C. coaches D. viewers
12.A. dressed B. showed up C. made up D. planned
13.A. slightly B. hardly C. basically D. completely
14.A. seen B. known C. heard D. read
15.A. styles B. training C. game D. rules
16.A. even B. still C. seldom D. again
17.A. confused B. struck C. reminded D. warned
18.A. touching B. thinking C. encouraging D. learning
19.A. Experience B. Independence C. Curiosity D. Interest
20.A. harmful to B. mixed with C. different from D. applied to
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科目:高中英語 來源:2017屆黑龍江省大慶市高三第三次教學(xué)質(zhì)量檢測(cè)(三模)英語試卷(解析版) 題型:書面表達(dá)
假定你是李華。給你在英國的表哥Jack寫信,邀請(qǐng)他暑假來中國游玩。信得內(nèi)容包括:
1.邀請(qǐng)Jack來中國游玩:
2.介紹兩至三個(gè)歷史名勝:
3.詢問Jack來中國的時(shí)間:
注意:1.詞數(shù)100左右:
2.可以適當(dāng)增加細(xì)節(jié),以使行文連貫。
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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科目:高中英語 來源: 題型:選擇題
A. | didn't he | B. | did he | C. | didn't it | D. | did it |
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科目:高中英語 來源: 題型:選擇題
A. | slowly | B. | fast | C. | more slowly | D. | faster |
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科目:高中英語 來源: 題型:選擇題
A. | to check | B. | checking | C. | checked | D. | check |
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科目:高中英語 來源: 題型:閱讀理解
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