阑尾的动脉来自A．B．C．D．E．

The driver___________the passengers ofF at the supermarket andthen went to the next stop.

A.fell

B.sank

C.dropped

D.stepped

medServer1，Served，andServer3.YoucreateaservergroupnamedServerGroup1.Youdiscovertheerrormessageshowninthefollowingexhibit.（ClicktheExhibitbutton.）YouneedtoensurethatServer2canbemanagedremotelybyusingServerManager.Whatshouldyoudo？（）

A.OnDC1，runtheEnable-PSSessionConfigurationcmdlet

B.OnServer2，runtheAdd-Computercmdlet

C.OnServer2/modifythemembershipoftheRemoteManagementUsersgroup

D.FromActiveDirectoryUsersandComputers，addacomputeraccountnamedServer2，andthen restartServer2

dthen sell or()away.

A.take

B.get

C.give

A. telescopic pipes

B. large bore

C. drilled passage

D. tied rod

You？are？an？enterprise？administrator？for？Cer-tech？.com.？The？company？runs？Windows？Server？2008？on？all？theservers？on？the？network.？The？Windows？Server？virtualization？role？service？installed？on？two？servers？calledServer01？and？Server02.

Which？of？the？following？options？would？you？choose？to？remotely？manage？thevirtualization？settings？of？Server02？from？Server01？（）

A. From？the？Virtualization？Management？Console,right-click？Virtualization？Services？and？then？click？Connect to？Server.

B. Run？vmconnect.exe？Server02.

C. Run？vmconnect.exe？Server01？Server02.

D. From？the？Virtualization？Management？Console，？right-click？Server01？on？the？left？pane，？point？to？New，？andthen？click？Virtual？machine.

eanings indifferent countries．For instance，in Africa，people knock at the table withtheir fingers to call waiters which is considered as impolite in China．In western countries．if you make a circlewith your thumb and the index finger(食指)，and then raise the other three fingers．youare suggesting “OK”．The same gesture，however，means “money” in Japan while makesBrazilian people feel insulted(受侮辱的)．With that in mind，you’d better learn abouttheir custom before travelling to foreign countries． Greeting is an important part ofcommunication between people．When greeting someone，Americans tend to holdout their hands and look directly into his／her eyes andthen smile．However．sometimessuch behavior. might bring nothing but misunderstanding in other countries．A handshake might not be accepted and looking others right in theeye Can have different meanings． Asian people regard physical contact asembarrassin9；therefore，they do not shake hands．They have their ownways of greeting people．For Japanese，a slight bow of the head is enough．In Korea，women do not shake hands or hug with people；whilemen might shake hands accompanied by nodding the head once．In western Asia，Muslims do not make bodycontacts with women yet hug is generally accepted among men．Same thing happens on eye contact．In manycountries，people avoid direct eye contact to showrespect．This can cause misunderstanding，too．In fact． students have been regarded as lacking respectfor their American teachers exactly because they failed to make eye contactswith their teachers． Though different cultures seem to havedifferent ways of greeting．smiling is taken as the universal gesture of friendliness．Smiling indicates happiness or agreement(同意)andit can also be used to mean “Excuse me ”or “Please”．Sowhen you are not sure what to do，just smile． When two Japanese men meet，they might greet each other by __________

A.shakingeach other

B.huggingeach other

C.kissingeach other on both cheeks

D.bowingtheir heads

ystudents, 15-year-old Mikey, gave me a note from his mother. It explained his absence (缺席)from class the day before. "Dear Mr. McCort, Mikeys grandmother, who is eighty years of age, fell down the stairsfrom too much coffee and I kept Mikey at home to take care of her and his baby sister so I could goto my job. Please excuse Mikey and hell do his best in the future. P.S. His grandmother is OK. "I had seen Mikey writing the note at his desk. I said nothing. Most parental-excuse notes Ireceived were penned by my students. If I were to deal with them, Id be busy 24 hours a day. Thewriters of those notes didnt realize that honest excuse notes were usually dull: "Peter was late be-cause the alarm clock didnt go off." The students always said it was hard putting 200 words together on any subject, but when theyproduced excuse notes, they were excellent. So I decided to type out a dozen excuse notes and gavethem to my classes. I said, "Theyre supposed to be written by parents, but actually they are not.true, Mikey？" The students looked at me nervously. "Now, this will be the first class to study the art of the excuse note -the first class, ever, topractice writing them. " Everyone smiled as I went on, "Today Id like you to write An ExcuseNote from Adam to God or An Excuse Note from Eve to God. " Heads went down. Pens racedacross paper. For the first time ever I saw students so immersed (专心的) in their writing, theyhad to be asked to go to lunch by their friends. The next day everyone had excuse notes. Heated discussions followed. But suddenly I saw theheadmaster at the door. He entered the classroom and walked up and down, looking at papers, andthen said, "Id like you to see me in my office." My heart sank. When I stepped into his office, he came to shake my hand and said, "I just want to tell youthat that lesson, that task, whatever the hell you were doing, was great. Those kids were writingon the college level. Thank you." 根据材料请回答下列各 How did the author know that most parental-excuse notes were written by students themselves？

A.The excuse notes were written in dull words.

B.The notes were more like stories than facts.

C.He called their parents and found out the truth.

D.The handwriting obviously looked like childrens.

Solar Power without Solar Cells

A dramatic and surprising magneticeffect of light discovered by University of Michigan1researcherscould lead to solar power without traditional semiconductor-based solar cells.The researchers found a way to make an“optical51 ,” said Stephen Rand, a professor in thedepartments of Electrical Engineering and Computer Science, Physics and AppliedPhysics.

Light has electric and magnetic52 .Until now, scientists thought the effect of the magnetic field were so weakthat they could be 53 . What Rand and his colleagues found isthat at the right intensity, when light is traveling through a material thatdoes not 54 electricity, the light field cangenerate magnetic effects that

are 100 million times stronger than previouslyexpected. Under these circumstances, the magnetic effects develop strength55 toa strong electric effect.

“This could lead to a new kind of solarcell without semiconductors and without absorption to produce charge separation,” Rand said. “In solar cells, the 56 goesinto a material, gets absorbed and creates heat. Here, we expect to have a verylow heat load2. Instead of the light being absorbed, energy is stored in themagnetic moment3. Intense magnetization can be induced by intense light andthen it is ultimately capable of providing a capacitive power 57 Whatmakes this possible is a previously undetected brand of “opticalrectification,” says William Fisher, a doctoral student in applied physics. Intraditional optical rectification, light's electric field causes a chargeseparation, or a pulling58of the positive and negative charges ina material. This sets up a voltage, similar to59in a battery.

Rand and Fisher found that under the rightcircumstances and in right types of materials, the light's magnetic field canalso create optical rectification. The light must be shone througha 60 thatdoes not conduct electricity, such as glass. And it must be focused to anintensity of 10 million watts per square centimeter8. Sunlight isn't this61 onits own, but new materials are being sought that would work at lowerintensities, Fisher said.

“In our most recent paper, we show thatincoherent light9 like sunlight is theoretically almost62effectivein producing charge separation as laser light is,” Fisher said.

This new63 couldmake solar power cheaper, the researchers say. They predict that with improvedmaterials they could achieve 10 percent efficiency in converting solar power touseable energy. That's equivalent to today's commercial-grade solar cells.

“To manufacture modem solar cells, youhave to do64 semiconductor processing,” Fisher said.“All we would need are lenses to focus the light and a fiber to guide it. Glassworks for65 .It's already made in bulk, and itdoesn't require as much processing. Transparent ceramics might be even better.”

51.A.disc

B.fiber

C.instrument

D.battery

exactly how and when people began to eat it. There is onestory that the Roman emperor Nero (A.D. 37—68) sent slaves to the mountains tobring back snow. The snow was served to him sweetened with honey and fruit pulp.Marco Polo (1254—1324) tasted flavored ices, too, during his famous travels inthe Far East. He brought the recipes back toItaly.

Recipesfor ices spread fromItalyto the rest of Europe in the 1500’s. The chefs of kings constantly experimentedwith new combinations to please their masters, and at some point cream andbutter were added to the recipes for ice. The new dish was called cream ice.Cream ice, molded into amusing shapes, began to be served on the tables ofkings across Europe. Louis XIV (1638—1715)surprised his court with a dessert of eggs in cups of silver and gilt. Theeggs, of course, were really cream ice.

Graduallycream ice took the name it has today. One of the earliest advertisements forice cream was put in a New Yorkpaper in 1786. The ad announced that “Ladies and gentlemen may be supplied withice- cream every day at the City Tavern by their humble servant, Joseph Crowe.”But ice cream was still not an everyday event. It was usually presented infancy shapes at the end of dinner parties. Policy Madison (1768—1849) was famous for herimaginative dinners, and she was the first to serve ice cream at the WhiteHouse. When her guests came into the dining room, they found a table coveredwith delicious dishes, and in the center of the table, a huge mound of pink icecream on a silver platter.

Icecream was such a delicacy because it was so hard to make. At first it wasbeaten and then shaken by hand in a pan of salt and ice until it became firm. Afreezer that was cranked by hand was developed around 1846. Making ice creamwas still a chore, but cranking the freezer was much easier and faster thanshaking the mixture in a pan.

“Icecream socials” became a popular way to entertain friends. Everyone helped turnthe crank of the freezer, and homemade peach or strawberry ice cream was thereward. The development of the continuous freezer in the 1920’smade the manufacture of ice cream very quick and economical. It soon was easierto buy packaged ice cream than to make it at home. Eskimo pies and popsiclesbegan to be sold at the same time.

Possiblyice cream cones began with the World’s Fair in 1893. Vendors there sold FriedIce Cream. The ice cream was covered with a fritter batter and then quicklydipped in very hot lard or olive oil. Putting the ice cream in an alreadyprepared cone was the next step. Today there are many novelty products, fromfrozen drumsticks to ice cream pies.

16.According to the passage, which of thefollowing served ice cream disguised as eggs？

A. Policy Madison

B. Joseph Crowe

C. Louis XIV

D. Marco Polo

17.Newspaper advertisements for ice cream first appeared in_________.

A.1846

B.1893

C.1768

D.1786

18.The text would most probably be found in_________.

A. a history book

B. anadvertisement

C. a cookingbook

D. an encyclopedia

19. The main purpose of the writer is to_________.

A. explain how ice cream was invented

B. tell us the history of ice cream

C. describe why ice cream is so popular

D. persuade us the difficulties involved inmaking ice cream

20.Ice cream was so delicious, the reason is that_________.

A. it was difficult tomake

B. it was easy to make

C. it was beaten andthen shaken

D. it was complicated tomake