The scientists from the Lockheed Space Company (公司) work in Felton, California, with the help of a computer. But the computer is placed in Sunnyside, about 80 kilometers away. What the scientists input is sent by telephone lines to the computer, and after a time, copies of the designs are needed back in Felton as possible. Lockheed people have tried several ways of sending the prints (印刷品), but the most effective seems to be by pigeon (鴿子). Are pigeons really used to carry messages in these days? They are, and they send the prints faster and cheaper than any other way.
Human (人類的) messengers (persons carrying messages) are much more expensive and slower than the pigeons. The road to Felton goes through the mountains, and the driving is not easy. An electronic printout system(電子印刷系統(tǒng)) could do the work in Felton, but at a cost of 10 dollars a print. Pigeons carry the designs for about 1 dollar each.
Now Lockheed people have ten pigeon messengers. The pigeons do the work, and they have made Lockheed more famous. You can often read the news about the pigeons in the newspapers around the world.
【小題1】The story is mainly about     .
A.Felton, CaliforniaB.the scientists
C.how to work with computersD.sending prints by pigeon
【小題2】This story is unusual because pigeons       .
A.don’t like carrying things
B.a(chǎn)re often cheap to keep
C.seem out of place in the space age
D.a(chǎn)ren’t friendly to the scientists
【小題3】Something that’s effective(有效的)      .
A.usually costs more
B.is something that works
C.is often unhappy
D.is often don by animals
【小題4】Which happened first?
A.Pigeons were used as messengers.
B.Human messengers were used.
C.What the scientists input was sent to the computer.
D.Scientists got their designs.
【小題5】Lockheed likes the pigeons because they      .
A.do the work at low cost
B.get their pictures on television
C.understand the computer
D.make the scientists pleased

【小題1】D
【小題2】C
【小題3】B
【小題4】C
【小題5】A解析:
練習冊系列答案
相關(guān)習題

科目:初中英語 來源: 題型:

根據(jù)所給音標寫出相應單詞
【小題1】Is the red car one of the               /'dɑ:ns?z /?
【小題2】There are many              /seli'brei??nz/ in Chinese New Year’s Party.
【小題3】We can donate some             /'stei??n?ri/ to the children in poor areas.
【小題4】The moon shines brightly             /θru: / the window.
【小題5】Daniel              /'præktisiz/ speaking English with Amy on Sundays?

查看答案和解析>>

科目:初中英語 來源: 題型:

25℃時,向VmL pH=a的鹽酸中,滴加pH=b的NaOH溶液10VmL時,溶液中的Cl和Na+的物質(zhì)的量相等,則a+b的值是(   )                                         
A.13B.14C.15D.不能確定

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

閱讀短文,從方框中選擇適當?shù)膭釉~,并用其適當形式填空。有的需要加助動詞或不定式符號。

An old man died and left his son a lot of money. But the son was a foolish young man, and he quickly (1) ______________ all the money, so that  soon he had (2)_______________ left. Of course, when that happened, all his friends disappeared. When he was quite poor and alone, he went to see Nasreddin, who was a kind, clever old man and often helped people when they had trouble.
"My money has been used up and my friends (3) _______________,” said the young man. "What should I do now?"
"Don't worry, young man," answered Nasreddin. "Everything (4) ______________ all right soon again. Wait and you will feel much happier."
The young man was very glad. "Am I going to get rich again then? " he asked Nasreddin.
"No, I didn't mean that," said the old man. "I meant that you would soon get used to being poor and (5) _______________ no friends."

查看答案和解析>>

科目:初中英語 來源: 題型:

----Have you done most of your jobs?
----Not_______ .I will do it in a minute .
A Neither  B never  C already  D yet

查看答案和解析>>

科目:初中英語 來源: 題型:

It's important __________.
A.for us to learn English wellB.to us to learn English well
C.for us learning English wellD.of us to learn English well

查看答案和解析>>

科目:初中英語 來源: 題型:

Hamburgers are very delicious, ________ they are not healthy.
A.butB.becauseC.orD.so

查看答案和解析>>

科目:初中英語 來源: 題型:

--What are you going to do this Sunday?
--___________. What about you?
A.I’m OKB.I’m sorry C.I’ve no idea D.What a pity

查看答案和解析>>

科目:初中英語 來源: 題型:

Please speak in a low       . The baby is sleeping.
A.musicB.soundC.voiceD.noise

查看答案和解析>>

同步練習冊答案