THE INTERNATIONAL CEMTER plans to publish a booklet of student travel adventures. If you like to write shoud your foreign experiences, unusual or just plain interesting. Call us (800-9310) and ask for Mike or Janet. UNSURE WHAT TO DO?
Life-Planning Workshop, Dec. 13#-15#. Bob and Margaret Atwood, 800-0046. ROOMMATES
FEMALE ROOMMATE
WAMTED: Owm room near campus. Available December 1#. Rent $300 per month until March 1#. $450 thereafter. Call jill for detalls, 800-7839.
MEED PERSON to assume lease for owm bed com in apt. near ? ,S‘380/mo. Starting Jan. ?, Call 800-6157 after 5p.m. DOMESTIC SERVICE
EARLY HOUR WAKE-UP SERVICE:For prompt, courteous wake-up service, call 800-0760. HELP WANTED
BABYSLTTER—MY HOME If you are available a few hours during the day, and some evenings to care for 2 school-age children, please call Gayle Mooee, days 800-1111, evenings and weekends 800-4964.
PERSONS WANTED for delivery work, Own transportation. Good pay. Apply 2311 E .Stadium. Office 101, after 9 a.m.
TELEPHONE RECEPTION-IST WAMTED. NO experience necessary. Good pay. Apply 2311 E.Stadium. Office 101,after 9 a.m.
WAITRESS WANTED: 10a.m.-2 p.m. or 10:30 a.m.-5 p.m. Apply in person. 207 S. Main, Curtis Restaurant.
HELP WANTED for house cleaning 1／2 day on weekends. When----to be discussed for mutual comvenience. Good wages. Sylvan Street. Call 800-2817.
45.Where will you post a notice if you need someone to look after your children?
A.PERSONAL B.HELP WANTED C.DOMESTIC SERVICE D.ROOMMATES 46.A second-hand jacket will probably cost you . A.$60 B.$40 C.$20 D.10
47.To have your travel notes published,you may contact . A. Students‘Union B.Gayle Mcore
C.The International Center D.Life Planning Workshop
48.If you want to have someone wake you up in the morning,you may call . A.800-5224 B.800-5770 C.800-7839 D.800-0760
C
Plants can‘t communicate by moving or making sounds,as most animals do.Instead,plants produce volatile compounds,chernicals that easily chasse trom a liquid to a gas .A flower‘s sweet smell,for example,comes from volatile compounas that the plant produces to attract insects such as bugs and bees.
Plants can also detect volatile compounds produced by other plants,A tree under attack by hungre insects ,for instance, may give off volatile compounds that let other trees know about the attack,In response,the other trees may send off chemicals to keep the bugs away- or even chemicals that attract the bugs‘ natural enemies.
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Now scientists have created a quick way to understand what plants are saying: a chemical sensor(传感器) called an electronise nose,The ―e-nose‖ can tell compounds that crop plants make when they‘re attacked.Seientists say the e-nose could help quickly detest whether plants are being eaten by insects,But today the only way to detect such insects is to visually inspect individual plants.this is a challenging task for managers of greenhouses,enclosed gardens that can house thousands of plants.
The research team worked with an e-nose that recognizes volatile compounds.Inside the device,13 sensors chemically react with volatile compounds,Based on these interactions ,the e-nose gives off electronie signals that the scentists analyze using computer software.
To test the nose,the team presented it with healthy leaves from cueumber,pepper and tomato plants , all common greenhouse crops.Then the scientists colleced samples of air around damaged leaves from each type of crop.These plants had been chaged by insects, or by scientists who made holes in the leaves with a hole punch (打孔器).
The e-nose,it turns out,could identify healthy cucumber,pepper and tomato plants based on the volatile compounds they produce,It could also identify tomato leaves that had been damaged.But even more impressive,the device could tell which type of damage – by insects or with a hole punch – had been done to the tomato leaves.
With some fine tuning,a device like the e-nose could one day be used in greehouses to quickly spot harmful bugs,the researchers say,A device like this could also be used to identify fruits thet are perfectly ripe and ready to pick and eat,says Natalia Dudareve,a biochemist at Purdue University in West lafayette,Ind,who studies smells of flowers and plants.Hopefully,scientists believe,the device could bring large benefits to greenhouse managers in the near future. 49.We learn from the text that plants communicate with each other by______. A.making some sounds B.waving their leaves
C.producing some chemicals D.sending out electronic signals 50.What did the scientists do to find out if the e-nose worked? A.They presented it with all common crops.. B.They fixed 13 sensors inside the device. C.They collected different damaged leaves.
D.They made tests on damaged and healthy leaves.
51.According to the writer,the most amazing thing about the e –nose is that it can ______. A.pick out ripe fruits B.spot the insects quickly
C.distiinguish different damages to the leaves D.recognize unhealthy tomato leaves
52.We can infer from the last paragraph that the e-nose_____. A.is unable to tell the smell of flowers B.is not yet used in greehouses
C.is designed by scientists at Purdue D.is helpful in killing harmful insects
D
In ancient Egypt,the pharaoh(法老)trented the poor message runner like a prince when he arrived at the palace ,if he broubht good news ,However ,if the exharsted runner had the misrlrtune
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to buing the pharaoh unhappy news ,his head was cut off
Shades of that lpirit priad ovie today‘s cknversntions,Once a friend and Ipack up some peanut butter ane sandwiches for an outing As we walked light-heartedly out the door ,pienie basket in hand ,a smiling neighbor looked up at the sky and saie ,Oh boy ,bad dny for a picnic the weatherman says it‘s going tl raim I wanted to strike him on the race with the peanut butter and sandwiches not for his stupid weather report for his wsile
Several months ago Iwas racing to fcatcb angty A‘s I breathlessly put my handfrul of cash acrlss the Greyhound ckunths the sales ager said with a brond smile .Oh that bus lsft rive minrtes ago Dreams of head cutting
It‘s not the news thst makes ,someone angry It‘s the unsympathetic attitrde with which it‘s delivered Everyone must give bad mews from time to time ,and winning professilnalas di it ?swith the prope attitude A doctor advising a paticnt she needs an operation dose it in a caring way Aboss infonning an employee he didn‘t get job takes on a sympathetic tone Big winners know ,when delivering ang ban news they should share th feeling of the receiver.
Unfortumately, many peple are not aware of this. ? you re tired from a long flight, has a
hotel clerk cheerfully said that your room isn‘t ready ye? When you had your heart set on the toast beef ,has your waiter mimily told you that he just seuved the last piece? It makes you as traveler or diner want to land your fist fight on their unsympathetic faces.
Had my neighbor told me of the upcoming rainstorm with sympathy , I would have appreciated his warning . Had the Greyhound salesclerk sympathetically infored me that my bus had already left , I probably would have said , ―Oh ,that ?s all right . I‘ll catch the next one .‖ Big winners , when they bear bear new ,deliver bombs with the emxtion the bombarded (被轰炸的) person is sure to have .
53.In Paragrph 1,the writer tells the story of the pharaoh to . A.make a comparison B.warm-hearted C.not considerate D.not helpful 54.From ―Dreams of head-cutting!‖(Paragraph 3),we learn that the writer . A.was mad at the sales agent.
B.was reminded of the cruel pharaoh
C.wished that the sales agent would have had dreams. D.dreamed of cutting the sales agent‘s head that night. 56.What is the main idea of the text?
A.Delivering bad news properly is important in communication. B.Helping others sincerely is the key to business success. C.Receiving bad news requires great courage. D.Learning ancient traditions can be useful.
E
Four people in England,back in 1953,stared at photo 51. it was‘t much –a picture showing a black X.But three of these people won the nobel prize for figuring out what the photo really showes—the shape of DNA. The discovery brought fame and fortune to scientists James Watson,Francis crick, and Maurice Willkins. The fourth, the one who actually made the picture, was left out.
Her name was Rosalind Franklin. ―she should have been up there,‖says historian mary
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bowden.‖if her photo hadn‘t been there, the others couldn‘t have come up with the structure.‖one reason franklin was missing was that she had died of cancer four years before the nobel decision. But now school doubt that franklin was not only robbed of her life by disease but robbed of credit by her competions.
At cambridge university in the 1950s, watson and back fried to make models by cutting up shapes of DNA‘s parts and then putting them together. In the meantime, at king‘s college in lodon frannklin and Willkins shone X-rays at the molecule(分子)。The rays produced patterns reflecting the shape.
But willkins and frangklin‘s was a lot rockier than the celebrated teamwork of waston and crick. Willkins though frangklin was hired to be his assistant. But the college actually emplyed her to take over the DNA project.
What she did was produce X-ray. And she was not shy about saying so. That angered waston, who attacked her in return,‖mere inspection suggerted that she would not easily bend. Clearly she had to go or put in her place.
As frankins competitors, wilkins, watston and crick had much to gain by cutting her out of the little group of researchers,saya historian pnina Abir-Am. In 1962 at the nobel prize awarding ceremony, wilkins thanked 13 colleagues by name before he mentioned frangkin. Watson wrote his book laughing at her. Crick wrote in 1974 that ―franklins was only two steps away from the solution.‖
No, Franklin was the solution.‖She contributed more than any other player to solving the structure of DNA.She must be considered a co-discoverer,‖Abir-Am says.This was backed up by Aaron Klug, who worked with Franklin and later won a Nobel Prize himself. Once described as the ―Dark Lady of DNA‖,Franklin is finally coming into the light. 57. What is the text mainly about?
A. The disagreements among DNA researchers. B. The unfair treatment of Franklin. C. The process of discovering DNA.
D The race between two teams of scientises.
58.Watson was angry with Franklin because she ______. A. took the lead in the competition B. Kept her results from him
C.proved some of his findings wrong D.shared her data with other scientists
59.Why is Franklin descrebed as ―Dark Lady of DNA‖? A. She developed pictures in dark labs.
B.She discovered the black X------ the shape of DNA. C.Her name was forgotten after her death.
D.Her contribution was unknown to the public.
60. What is the writer‘s attitude toward Wilkins,Watson and Crick? A. Disapproving B. Respectful. C. Admiring D. Doubtful
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