题目内容
在计算机网络中，所有的计算机均连接到一条通信传输线路上，路两端连有防止信号反射的装置，这种连接结构被称为（）。
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What will the woman do at the weekend？ 查看材料
下列函数中在（0，＋∞）内单调减少的是（）
Questionsare based on the following passage．
Modem mass·production methods lower the cost of making goods，and thus give US better values．At the same time，American ingenuity(独创性)and science are constantly at work improving the quality of products．(79)In this way better quality products at good Values are continually being brought to the people of all income groups．
As an example of how this worked，when facial tissues(面巾纸)were first put on the market in 1924,they were made in limited quantities and sold 65 cents per box of 200． People like these facial tissues immediately and began asking for them when they went into different stores because there was such a demand for the product ,manufacturers began making tissues in larger and larger quantities because the manufacturers were making tissues in greater quantities,their
production costs were lowered，SO that the price of tissues went down．(80)In the meanwhile,The quality of facial tissues was constantly improving, because more manufacturers went into the business of making tissues,and each manufacturer strove to make his product better than his competitors&39;．Today,instead of costing 65cents，a box of 200 tissues costs around one-third of
that price，and they are both softer and stronger． When people are free to compete-when they are free to make more things and make them better-everyone benefits．
In regard to the production of goods in greater quantities．the author states that__________ 查看材料
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Robert Spring, a 19th century forger(伪造者), did well in his job that he was able to makehis living for 15 years by selling false signatures of famous Americans．Spring was born in Englandin 1813 and arrived in Philadelphia in 1858 to open a bookstore．At first he made some money byselling his small but real collection of early US autographs(亲笔签名 )．Discovering his ability atcopying handwriting, he began to learn the signatures of George Washington and Ben Franklin andwrite them on the title pages of old books．To reduce the chance of being discovered, he sent hisworks to England and Canada for sale．
Forgers have a difficult time selling their products．A forger can&39; t go to a respectable buyerbut must deal with people who don&39; t have much knowledge in the field．Forgers have many waysto make their works look real．For example, they buy old books to use the aged paper of the titlepage, and they treat paper and ink with chemicals．
After the Civil War, Britain was still fond of the southern states, so, Spring invented a re-spectable lady known as Miss Fanny Jackson, the only daughter of General "Stone Wall" Jackson．
For several years Miss Fanny&39; s money problems forced her to sell a great number of letters belong-ing to her famous father．Spring had to work very hard to satisfy the demand．All this activity didnot prevent Spring dying in poverty．
Why did Spring sell his false autographs in England and Canada？ 查看材料
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