Dolly Madison once invited the children of Washington to roll boiled eggs down the hilly l

听力原文：W: Hello, nice to meet you, Dr. Griffin. I'm Nancy Wang with China Daily.

M: Nice to meet you, Miss Wang. I've been to China twice.

W: Really？ When？

M: I visited China first in 1996 and then in 2000. I believe everyone who bas been to China is impressed with the dramatic changes there.

W: Thank you, Dr. Griffin. I heard it is your institute that first cloned an adult mammal—Dolly the sheep in July 1996.

M: That's right. Ever since it was born, Dolly has been the center of attention because its appearance marked the beginning of a new era.

W: It's reported that Dolly gave birth to a lamb in April last year. How are Dolly and the little lamb doing？

M: The lamb is called Bonnie. They are both doing Well. This has proved that Dolly, a cloned animal, is able to breed normally and produce healthy offspring.

W: It is indeed exciting. Will Dolly give birth again？

M: She has already. On March 24 this year, Dolly gave birth to three healthy lambs, two males and one female.

W: les incredible! Dolly must have made world headlines again!

M: This has further demonstrated that cloned animals can lead a normal life.

W: How will human beings benefit from this new progress in science？

M: Dolly and her offspring are part of a research program aimed to produce treatment for a kind of chronic lung disease.

W: I Wish you success, Dr. Griffin!

M: Thank you, Miss Wang.

(20)

A．April this year, 3.

B．March this year, 3.

C．April this year, 4.

D．March this year, 4.

听力原文：Do you want me to take Mulberry Street, or Madison Avenue？

(A) Madison is faster this time of day.

(B) I live on Clark Street.

(C) Yes, just take a left.

(38)

A．

B．

C．

听力原文：What did you say your job was？

(A) He's an architect.

(B) I work for the city museum.

(C) I have lived in Madison for 10 years.

(17)

A．

B．

C．

Dolly was once an awfully lonely sheep. When the famous cloned (of an exact copy of a plant or animal made by taking a cell from it and developing it artificially) animal made headlinesin 1997, she was the only mammal ever to be manufactured from the cell of an adult donor. Since then, the clone ranks have swelled, with mice and cattle also making their way out of the labs. Last week cloning technology took another step forward when an international biotechnology company announced that it had created a litter of five genetically identical piglets (young pigs), and that it had a pretty good idea of how they could one day be used as organ donors for ailing humans.

The idea of turning pigs into tissue factories has been around for at least 30 years. Pigs breed easily and mature quickly, and their organs are roughly the same size.as those of humans, meaning operations can be performed with a relative snap-out, snap-in simplicity. The problem is, once the donor organ is stitched in place, the body rebels, rejecting it even more violently than it would a human transplant. " A pig heart transplanted in a person would turn black within minutes, " says David Ayares, a research director with PPL Therapeutics, the biotech firm that helped clone Dolly and also produced the piglets.

What causes pig organs to be rejected so quickly is a sugar molecule on the surface of pig cells that identifies the tissue as unmistakably nonhuman. When the immune system spots this marker, it calls out its defenses. PPL scientists recently succeeded in finding the gene responsible for the sugar and knocking it out of the nucleus of a pig cell. Their next step would be to extract that nucleus, insert it into a pig ovum, and then into the womb of a host pig. The sugar free piglet that was eventually born could then be cloned over and over as a source of safe transplant organs. The idea is to arrive at the ideal animal and repeatedly copy it exactly as it is. The cloned piglets PPL introduced to the world last week were created in just this way, though for this first experiment in pig replication the scientists left the sugar genes intact.

Despite this recent success, PPL is not likely to be setting up its organ shop anytime soon. Knocking out the key sugar gene solves only the problem of short-term rejection. Much more has to be done before any solution to long-term rejection can be found. Nonetheless, Ayares is optimistic, insisting that pig organs could be available in as little as five years. For the present, even a little new transplant material is a big improvement over what's available, and for gravely ill patients awaiting a donor, that's no small thing.

What is true about Dolly according to the text？

A．She was a lonely sheep in the first place.

B．She was manufactured out of the lab.

C．She was cloned from the cell of a mature sheep.

D．She was replaced by cloned piglets in terms of importance.

Dolly was once an awfully lonely sheep. When the famous cloned (of an exact copy of a plant or animal made by taking a cell from it and developing it artificially) animal made headlinesin 1997, she was the only mammal ever to be manufactured from the cell of an adult donor. Since then, the clone ranks have swelled, with mice and cattle also making their way out of the labs. Last week cloning technology took another step forward when an international biotechnology company announced that it had created a litter of five genetically identical piglets (young pigs), and that it had a pretty good idea of how they could one day be used as organ donors for ailing humans.

The idea of turning pigs into tissue factories has been around for at least 30 years. Pigs breed easily and mature quickly, and their organs are roughly the same size.as those of humans, meaning operations can be performed with a relative snap-out, snap-in simplicity. The problem is, once the donor organ is stitched in place, the body rebels, rejecting it even more violently than it would a human transplant. " A pig heart transplanted in a person would turn black within minutes, " says David Ayares, a research director with PPL Therapeutics, the biotech firm that helped clone Dolly and also produced the piglets.

What causes pig organs to be rejected so quickly is a sugar molecule on the surface of pig cells that identifies the tissue as unmistakably nonhuman. When the immune system spots this marker, it calls out its defenses. PPL scientists recently succeeded in finding the gene responsible for the sugar and knocking it out of the nucleus of a pig cell. Their next step would be to extract that nucleus, insert it into a pig ovum, and then into the womb of a host pig. The sugar free piglet that was eventually born could then be cloned over and over as a source of safe transplant organs. The idea is to arrive at the ideal animal and repeatedly copy it exactly as it is. The cloned piglets PPL introduced to the world last week were created in just this way, though for this first experiment in pig replication the scientists left the sugar genes intact.

Despite this recent success, PPL is not likely to be setting up its organ shop anytime soon. Knocking out the key sugar gene solves only the problem of short-term rejection. Much more has to be done before any solution to long-term rejection can be found. Nonetheless, Ayares is optimistic, insisting that pig organs could be available in as little as five years. For the present, even a little new transplant material is a big improvement over what's available, and for gravely ill patients awaiting a donor, that's no small thing.

What is true about Dolly according to the text？

A．She was a lonely sheep in the first place.

B．She was manufactured out of the lab.

C．She was cloned from the cell of a mature sheep.

D．She was replaced by cloned piglets in terms of importance.

Text 3

Dolly was once an awfully lonely sheep. When the famous cloned (of an exact copy of a plant or animal. made by taking a cell from it and developing it artificially) animal made headlines in 1997, she was the only mammal ever to be manufactured from the cell of an adult donor. Since then, the clone ranks have swelled, with mice and cattle also making their way out of the labs. Last week cloning technology took another step forward when an international biotechnology company an-nounced that it had created a litter of five genetically identical piglets (young pigs) , and that it had a pretty good idea of how they could one day be used: as organ donors for ailing humans.

The idea of turning pigs into tissue factories has been around for at least 30 years. Pigs breed easily and mature quickly, and their organs are roughly the same size as those of humans, meaning operations can be performed with a relative snap-out, snap-in simplicity. The problem is,once the donor organ is stitched in place, the body rebels, rejecting it even more violently than it would a human transplant. "A pig heart transplanted in a person would turn black within minutes," says David Ayares, a research director with PPL Therapeutics,the biotech firm that helped clone Dolly and also produced the piglets.

What causes pig organs to be rejected so quickly is a sugar molecule on the surface of pig cells that identifies the tissue as unmistakably nonhuman. When the immune system spots this marker, it calls out its defenses. PPL scientists recently succeeded in finding the gene responsible for the sugar and knocking it out of the nucleus of a pig cell. Their next step would be to extract that nucleus,insert it into a pig ovum, and then into the womb of a host pig. The sugar free piglet that was eventually born could then be cloned over and over as a source of safe transplant organs. The idea is to arrive at the ideal animal and repeatedly copy it exactly as it is. The cloned piglets PPL introduced to the world last week were created in just this way, though for this first experiment in pig replication the scientists left the sugar genes intact.

Despite this recent success, PPL is not likely to be setting up its organ shop anytime soon.

Knocking out the key sugar gene solves only the problem of short-term rejection. Much more has to be done before any solution to long-term rejection can be found. Nonetheless, Ayares is optimistic, insisting that pig organs could be available in as little as five years. For the present, even a little new transplant material is a big improvement over what's available, and for gravely ill patients awaiting a donor, that's no small thing.

51. What is true about Dolly according to the text？

[A] She was a lonely sheep in the first place.

[B ] She was manufactured out of the lab.

[C] She was cloned from the cell of a mature sheep.

[D] She was replaced by cloned piglets in terms of importance.

Charley Foley calls into the Mater Misericordia Hospital to visit his wife.

"How are you feeling？" he asks, sitting at the bedside, close to Dolly who is smiling up at him, her black hair resting against the white pillows.

"I'm fine," Dolly says, quietly. She looks old and tired to Charley; she is deathly pale and has black pouches under her eyes. When she slips her fingers into Charley's he notices two ugly brown liver spots on the back of her small hand.

"You look tired," Charley says. " Aren't you sleeping？"

"I was a bit restless last night. "

Dolly does not mention the pain: she doesn't want to upset her husband.

"Any word from Linda？" she asks.

"She phoned again last night. I told her you were grand. I said there was nothing to worry about. "

Linda, their eldest, teaches in a university in Galway. Linda will come home for the holiday in August. Their son, Colin, and his children live in Australia. Cohn hasn't been told that his mother is unwell. Colm's a worrier: it's best he's not upset. Charley gazes dreamily across the chattering hospital ward, bright with pale afternoon sunlight. Other visitors are doing their duties, gathering around the sick, bringing flowers and fruit, offering words of hope and comfort.

" Have you seen the doctor again？" Charley asks his wife.

"Tomorrow maybe. "

"Any idea how long they'll keep you in？"

Dolly turns away and coughs into a tissue, then settles back. She takes Charley's hand again.

"They'll let me know on Monday. They have to do lots more tests. They won't let me home until they know. I'm song to be such a bother. "

Dolly's small chest heaves under her heavy nightdress. Charley thinks of a frightened bird. Sweet Dolores Delarosa he used to call her long ago when they were courting, mocking her sorrowful eyes and the way she took everything too seriously. He can't help wondering if she made herself sick with worry.

Poor Dolly Delarosa!

"Don't let them budge you until you're absolutely better," he says.

"Are you managing all right, darling？"

"Grand. "

Charley is eating out and staying away from the house as much as possible. He's managing all right.

The minutes pass in heated tedium. Charley is watching the visitors and glancing at the small alarm clock beside his wife's bed. He can hear its distant ticking and still recall the irritating ring when it dragged his wife from bed at the crack of dawn and moments later her breakfast sounds clattering in the kitchen keeping him awake, reminding him that there's a day's work ahead and children to be schooled and fed.

The kids are all grown up now. Second grandchild is imminent. Time is running out. A grey face in the shaving rein'or reminds Charley of middle age and the rot ahead. Where's the point in having money if you can't enjoy it？ Why can't clocks take their time？ What's the hurry？

Ah—God have mercy! Dolly Dolorosa. How different might it have been without her？

Dolly's eyelids droop. Her mouth opens a fraction. She looks almost dead. Moments pass slowly.

"This must be very boring for you," she says, without opening her eyes.

"Not at all. It does me good to see you. "

"It's not nice having to visit anybody in hospital. It's so depressing. "

"Nonsense. "

Dolly settles her dark head further back against the white pillows. Grimaces for an instant then braves a smile.

"You should leave now, Charley. I think I might sleep for a while. "

"Are you sure？"

"Positive. "

Charley bounces to his feet.

"I'll come in later," he says.

"Please don't. With it being Saturday the wards will be crammed with people. Leave it till the morning. Come after Mass. "

"Is that what you wa

A．is from left to right.

B．aches all over.

C．moves up and down.

D．goes down.

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D . Mark your answers on ANSWER SHEET 1.

It was the single, strangely spiraled tusk that first alerted scientists. Sticking out of the ice covered by Siberian soil, like an ivory tombstone, it revealed the. presence of a true scientific wonder: underneath lay the frozen body of a mammoth.

The discovery has presented researchers with an unprecedented challenge--to move to laboratory, a mammoth's entire, undisturbed body where it can be analyzed at leisure and its biological secrets revealed.

Last week, scientists completed the first stage of this remarkable transfer, using a helicopter to lift a twenty-three-ton block of ice and mammoth to a new site where defrosting can be started.

As one of the team, Dutch paleontologist Dick Mol put it, "It's very exciting. I've been working on mammoths for more than 25 years, and this is a dream for me—to find the soft parts and touch them and even smell them."

In particular, the discovery and recovery of the 23,000-year-old body has raised speculation that it may be possible to clone a mammoth from one of its cells. Could the same process used to clone Dolly the sheep be attempted with a mammoth, using an elephant as a surrogate mother？

It is certainly an enticing prospect. Herds of woolly mammoths grazing the pastures of the world's many natural parks would be a mighty attraction, and a massive triumph for modem science, showing it could even resurrect eradicated species. Extinction would no longer be forever.

Mammoths once roamed the world's northern hemisphere until they abruptly disappeared. Some. scientists argue that as the last Ice Age ended, the world went through major ecological changes, and these large woolly mammals found life awkward, sweaty and unaccommodating. No longer able to compete for resources, they became extinct.

According to the first paragraph, what scientific wonder was discovered？

A．A mammoth had a strangely spiraled long nose.

B．A mammoth was like an ivory tombstone.

C．A mammoth stuck out of the Siberian soil.

D．There was a frozen mammoth under the Siberian soil.

lker, I am writing this letter to confirm Mondays telephone conversation about the purchase of the XB3000 Laser Printer and to thank you again for the invitation to take part in the Continental Project in Toronto. I appreciate your thinking of me. I found out today that I will be in Middleton City on Tuesday, May 3rd. If it works for you, I could meet you in Vancouver either on the morning of the fourth or the fifth. It would be an excellent opportunity to work out the details of the ad campaign in Boston. Ill be staying at the Hillside hotel on Madison Street until the sixth. Im hoping that Melissa Baily will be able to join us. Did you know that she won the competition for the "Best Advertisement" this year？ Her experience would be invaluable for the Continental Project. I look forward to working with you again. Sincerely, Robin Evans Marketing Manager, TNT International

What is the purpose of the letter？

A．To complain about the shipment

B．To express appreciation and confirm a call

C．To invite Mr. Walker to take part in the Continental Project

D．To order a new laser printer model