A. exceptions B. sameness C. differences D. divisions
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Keys: ?1-5. ?BCADC ???6-10. ADBAC ???11-15. CCBCA
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Passage 2
A computer virus released in March 1999 aptly demonstrated the need for more effective ways of fighting off computer viruses. Although warnings about the Melissa virus went???1 ??soon after it was???2 ??, it spread as quickly as the alarms. Within a few days, the virus had circled the???3???, sending???4???unwanted E-mail messages across the Internet and clogging (阻礙) E-mail service at hundreds of organizations,???5???them to???6 ??off their Internet connections.
Although Melissa—the first virus to mail itself around the world—merely clogged E-mail systems, virus makers have already launched spin-offs of the virus designed to????7 ???data.
The???8 ??of computer infections rises as more information is exchanged through E-mail or over the Internet. ????9 ????, the potential damage that viruses can create multiplies as people 10 ????sensitive personal and corporate (團(tuán)體的，法人的) data over the Internet. Computer security experts also warn that the avenues for viruses to spread multiply dramatically ????11 ?????computers use software that's integrated so that one program can launch another.
"There used to be plenty of time to ???12 ???a virus before it, but Internet-borne viruses can spread around the world in hours or days," says Steve R. White of IBM, Thomas J. Watson Research Center in Yorktown Heights, N. Y. "In a world where things can travel this quickly and???13 ??this much damage, we have to have automated ways of ??14 ??them. It is ????15 ?????to think that we can protect against these viruses manually."
( ) 1.?A. in B. on C. out D. up
( ) 2.?A. copied B. determined C. found D. identified
( ) 3.?A. computers B. globe C. Internet D. system
( ) 4.?A. a few B. countable C. countless D. huge
( ) 5.?A. driving B. forcing C. making D. permitting
( ) 6.?A. keep B. make C. put D. shut
( ) 7.?A. destroy B. kill C. save D. survive
( ) 8. A. matter B. news C. result D. risk
( ) 9. A. However B. Likewise C. Otherwise D. Therefore
( )10. A. collect B. put away C. send D. store
( )1l. A. as B. before C. if D. while
( )12. A. analyze B. detect C. experiment D. protect
( )13. A. act B. do C. make D. take
( )14. A. beating B. dealing with ???????C. discovering D. helping
( )15. A. interesting B. ideal C. silly D. wonderful
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答案解析
1. C ?warnings about… ?went out意為“關(guān)于…．．．的警告發(fā)出，傳出”。go out有“出版，發(fā)表”的意思。
2. D ?identify“鑒別”。
3. B “美尼莎”病毒的傳播是全球性的，故此題答案是globe。注意前面有個動詞circled。
4. C ?countless“無數(shù)的，不計其數(shù)的”。
5. B ?這里應(yīng)該有個動詞，意思是“迫使”。
6. D ?shut off意思是“中止、中斷、關(guān)閉連接器等”。
7. A ?計算機(jī)病毒被設(shè)計出來的目的就是摧毀數(shù)據(jù)。
8. D ?The risk of computer infections“計算機(jī)受感染的危險”隨著更多的信息通過因特網(wǎng)和電子郵件交流而增大。
?????as…“隨著……”。
9. B ?Likewise即in the same way“同樣地”。
10. C ?send“發(fā)送”。
11. A ?as表示原因。
12. A ?analyze“分析研究”。
13. B “造成損害”應(yīng)該是do damage，，故此題答案是B。
14. B ?意為我們必須想出能自動對付病毒的方法。此題答案是dealing with“對付”。
15. C ?silly“愚蠢的”。用人工操作的方法來抵御計算機(jī)病毒的侵害是愚蠢可笑的。
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Passage 3
One thing it' s safe to say about robots is that anything you can write about them will already be out of date by the time it's read. That's how fast robot technology is moving ahead.
All over the country and the world, in universities, businesses, and government laboratories, research is under ???1 ???into building better robots.
Most of this research is ??2 ??at industrial robots. But the improved hardware that comes ??3 ???it will be unable in robots of all kinds.
The most spectacular progress in robot development will come in the robot ???4???, though it's not likely that any totally new kind of computer that better ??5 ??the human mind will be invented. Most experts say computers will go on working the same way they do now, but they'll continue to steadily grow smaller, cheaper, and more powerful.
Your next robot will be much, much smarter than the???6 ??one. And that's very good news for anyone trying to build a humanlike robot.
A lot of things we would have liked our robot to???7 ???, like robot speech or legged walking systems, exist already, but only in the laboratory. The problem is that, as if now, they require more computer???8 ??to operate than we could ever ????9 ????our robot.
10 ????tomorrow's smarter computers it will be a different story. Full speech and partial sight will be possible. Programming your next robot could be as simple as talking to a friend.?Another area???11 ??we can expect a lot of progress is in the robot's???12???,???13 ??a robot's usefulness is directly related to how deftly(靈巧的)it can feel and sense.
Plastic skin with many built-in sensors to the square inch will let your next robot feel the shape of whatever it's??14 ?. It'll also let the robot pick up anything, from an egg to a heavy motor part, ???15 ??risk of crushing or dropping it.
( ????) 1. A. control B. ground C. level D. way
( ????) 2. A. aimed B. directed C. referred D. pointed
( ????) 3. A. across B. along with C. into D. out of
( ) 4. A. action B. brains C. design D. shape
( ) 5. A. compares B. helps C. imitates D. improves
( ) 6. A. former B. formal C. latter D. last
( ) 7. A. do B. have C. take D. use
( ) 8. A. awareness B. function C. operation D. power
( ) 9. A. apply B. fit into C. fix in D. provide to
( )10. A. For B. From C. With D. Without
( )11. A. that B. what C. where D. which
( )12. A. appearance B. intelligence C. senses D. sizes
( )13. A. despite B. if C. since D. whether
( )14. A. holding B. moving C. seeing D. wanting
( )15. A. because of B. instead of C. in spite of D. without
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答案解析
1．D ?under way是固定搭配，表示“在進(jìn)行中”。
2，A ?be aimed at“目的在于”。
3．D ?come out““出自于，來源于”。
4．B ?機(jī)器人的發(fā)展最主要體現(xiàn)在它的“大腦”部分，故此題答案是B。
5．C ?機(jī)器人只能模仿人腦，所以只能選imitates。
6．D ?last除了“最后的”意思以外，還有“剛剛過去的，上一個的”意思。
7．B ?這一句中的things是指機(jī)器人能做的事情，故要選have。
8．D ?這里是說機(jī)器人要求計算機(jī)要有更大的能力、功能，故答案是power。
9．B ?fit into“放置到……?里面去”。
10．C ?With“有了……”。
11．C ?此題考查定語從句的關(guān)系代詞和關(guān)系副詞的用法，答案是where。
12．C ?我們可以根據(jù)下面的一句話判定，這里應(yīng)該選senses。
13．C ?這里since引導(dǎo)原因狀語從句。
14．A ?機(jī)器人的塑料皮膚能感覺到它手握的東西，所以holding是正確的答案。
15．D ?without risk of.意為“不會有……的危瞼”。
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Passage 4
Every living thing has what scientists call a biological clock that controls behavior. The biological clock tells???1 when to form flowers and when the flowers should open. It tells ??2 ??when to leave the protective cocoon and fly?away, and it tells animals and human beings when to eat, sleep and wake.
Events outside the plant and animal ??3???the actions of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur 4?the number of hours of daylight. In the short???5???of winter, its fur becomes white. The fur becomes gray brown in color in the longer hours of daylight summer.
Inner signals control other biological clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration???6 ??twice each year. ?Birds???7 ??flying?become restless when it is time for the trip, 8__?they become calm again when the time of the flight?has ended.
Scientists say that they are beginning to learn which???9 ??of the brain contain biological clocks.
An American researcher, Martin Moorhead, said a small group of cells near the front of the brain???10 ?to control the timing of some of our actions. These ???11 ???tell a person when to???12 ??, when to sleep and when to seek food. Scientists say there probably are other biological clock cells that control other body activities.
Dr. Moorhead is studying ??13???our biological clocks affect the way we do our work. For example, most of us have great difficulty if we must often change to different work hours. ??14???can take many days for a human body to accept the major change in work hours. Dr. Moorhead said industrial officials should have a better understanding of biological clocks and how they affect workers. He said???15???understanding could cut sickness and accidents at work and would help increase a factory's production.