阅读理解The scientists from the Lockheed Space Company (公司) work in Felton, California, with the help of a puter. But the puter is placed in Sunnyside, about 80 kilometers away. What the scientists input is sent by telephone lines to the puter, 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 (鸽子). 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 (人类的) 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(电子印刷系统) 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.1.The story is mainly about______.A.Felton, CaliforniaB.the scientistsC.how to work with putersD.sending prints by pigeon2.This story is unusual because pigeons______.A.don’t like carrying thingsB.are often cheap to keepC.seem out of place in the space ageD.aren’t friendly to the scientists3.Something that’s effective（有效的）______.A.usually costs moreB.is something that worksC.is often unhappyD.is often don by animals4.Which happened first?A.Pigeons were used as messengers.B.Human messengers were used.C.What the scientists input was sent to the puter.D.Scientists got their designs.5.Lockheed likes the pigeons because they______.A.do the work at low costB.get their pictures on televisionC.understand the puterD.make the scientists pleased
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DCBCA解析1.理解归纳题，根据文中语句理解归纳可知。
2.理解归纳题，根据文中语句理解理解可知。
3.细节理解题，根据文中语句“Now Lockheed people have ten pigeon messengers. The pigeons do the work, and they have made Lockheed more famous.”理解可知。
4.细节理解题，根据文中语句“But the puter is placed in Sunnyside, about 80 kilometers away. What the scientists input is sent by telephone lines to the puter, and after a time, copies of the designs are needed back in Felton as possible.”理解可知。
5.细节理解题，根据文中语句“An electronic printout system could do the work in Felton, but at a cost of 10 dollars a print. Pigeons carry the designs for about 1 dollar each.”理解可知。