閱讀短文，根據(jù)短文內(nèi)容回答問(wèn)題。

We see them everywhere — on boxes of food, on packages and on CDs. They, of course, are bar codes. The invention of bar codes has changed the way we shop and how companies learn where their products are.

It was two university students from America, Bernard Silver and Norman Woodland, who first got theidea of bar codes. In 1948, they heard that the president of a food company was looking for a way to easily get information about what was being sold to customers. They tried to help by using a code system. They invented a large electronic reader to read the codes. However, computers couldn’t easily record the data that was read.

Then, in the 1960s, David Collins made important developments in bar codes. He developed a system for recognizing train carriages. In order to develop the recognition system for other kinds of businesses, Collins started his own company. In 1969, Collins’s company put a bar code reading system in a car factory, showing that bar codes could be useful.

Shortly after Collins started his company, an American electronic company called RCA also saw the potential (潛力) of bar codes to help businesses. RCA’s

system, which recorded how much of a product was sold, was not perfect. Since bar codes were not common, not all products had them and different companies used different codes. Then, Woodland helped develop the Universal Product Code (UPC), which gave every product a code that included information about the manufacturer and the kind of product being sold. This made bar codes much more practical.

In addition to shops, hospitals use bar codes to recognize patients by giving them cards with bar codes on them. Libraries use bar codes to record which books have been lent, and airports use them to find out where bags are going. Bar codes have made life much easier and simpler.

1.What changed the way we shop?

2.Who first got the idea of bar codes?

3.Why did Collins start his own company?

4.What do hospitals use bar codes to do?

5.What is the passage mainly about?

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：北京市八區(qū)2018屆九年級(jí)二模分類(lèi)匯編英語(yǔ)試卷--語(yǔ)基單項(xiàng)選擇 題型：單選題

—Why didn't you open the door for me just now?

—Sorry，I a bath.

A. will take B. am taking C. was taking D. take

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：北京市八區(qū)2018屆九年級(jí)二模分類(lèi)匯編英語(yǔ)試卷--語(yǔ)基單項(xiàng)選擇 題型：單選題

— __________ books do you read every year?

— About 30, I love reading.

A. How much B. How old C. How many D. How often

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：北京市八區(qū)2018屆九年級(jí)二模分類(lèi)匯編英語(yǔ)試卷--語(yǔ)基單項(xiàng)選擇 題型：單選題

Ken with me on the phone at 8:00 pm yesterday evening.

A. is talking B. was talking C. has talked D. is talked

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：北京市八區(qū)2018屆九年級(jí)二模分類(lèi)匯編英語(yǔ)試卷--語(yǔ)基單項(xiàng)選擇 題型：單選題

We’re doing our best this year, we’ll keep on trying.

A. but B. and C. because D. or

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：北京市豐臺(tái)區(qū)2018屆九年級(jí)5月統(tǒng)一模擬考試（二模）英語(yǔ)試卷 題型：完型填空

The Empty Easter Egg

Jeremy was born with a twisted body and a slow mind. At the age of 12 he was still in second grade. He would make _________, and his teacher, Doris Miller, often became angry with him.

One day, the children talked ___________ about the coming of Easter (復(fù)活節(jié)). Their teacher Doris told them the story of Jesus, and then to___________ the idea of new life springing forth, she gave each of the children a large plastic empty Easter egg. She asked them to bring it back tomorrow with something inside that shows new life.

The next morning, 19 children came to school, laughing and talking as they_______ their Easter eggs in the large basket on Miss Miller’s desk. It was time to open the now filled empty eggs. In the first egg, Doris found a flower. “Oh yes, a flower is certainly a _________ of new life,” she said. The next empty egg shell contained a plastic butterfly, which looked very real. Doris held it up. “We all know that a caterpillar changes and grows into a beautiful butterfly. Yes, that’s new life, too.”

Suddenly, Jeremy spoke up. “Miss Miller, aren’t you going to talk about my Easter egg?” Impatiently, Doris replied, “But Jeremy, your Easter egg is _________.” He looked into her eyes and said softly, “Yes, but Jesus’ tomb (墳?zāi)? was empty, too.” Time stopped. When she could speak again, Doris asked him, “Do you know why the tomb was empty?”

“Oh, yes,” Jeremy said, “Jesus was killed and put in there. Then His Father raised Him up.” “And that’s how Easter _________!”

The recess bell rang. While the children excitedly ran out to the schoolyard, Doris cried. The cold inside her melted completely away.

Three months later, Jeremy died. Those who paid their respects were __________to see 19 Easter eggs on top of his casket (棺材), all of them empty.

1.A. noises B. friends C. eggs D. plans

2.A. worriedly B. proudly C. excitedly D. sadly

3.A. guess B. explain C. check D. change

4.A. pushed B. dropped C. threw D. placed

5.A. name B. picture C. sign D. shape

6.A. empty B. small C. big D. broken

7.A. ended B. started C. changed D. developed

8.A. happy B. angry C. disappointed D. surprised

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：北京市豐臺(tái)區(qū)2018屆九年級(jí)5月統(tǒng)一模擬考試（二模）英語(yǔ)試卷 題型：單選題

— is the Yangtze River?

— It’s 6397 kilometers.

A. How much B. How heavy C. How long D. How big

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：Unit 5 Do you want to watch a game show-八年級(jí)英語(yǔ)上冊(cè)單元測(cè)試卷 題型：單選題

（題文）— Who likes watching news?

— Greg does. He hopes ______ about everything new.

A. know B. knowing C. to know

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：江蘇省蘇州市畢業(yè)暨升學(xué)模擬考試英語(yǔ)試卷 題型：單選題

---I’m sorry. There was too much traffic on the road.

---Never mind. The meeting _______ for only 5 minutes.

A. has begun B. has stopped C. has been on D. has finished

查看答案和解析>>

同步練習(xí)冊(cè)答案