For centuries, medical pioneers have refined a variety of methods and medicines to treat sickness, injury, and disability, enabling people to live longer and healthier lives.
“A salamander (a small lizard-like animal) can grow back its leg. Why can't a human do the same?” asked Peruvian-born surgeon Dr. Anthony Atala in a recent interview. The question, a reference to work aiming to grow new limbs for wounded soldiers, captures the inventive spirit of regenerative medicine. This innovative field seeks to provide patients with replacement body parts.
These parts are not made of steel; they are the real things --- living cells, tissue, and even organs.
Regenerative medicine is still mostly experimental, with clinical applications limited to procedures such as growing sheets of skin on burns and wounds. One of its most significant advances took place in 1999，when a research group at North Carolina’s Wake Forest Institute for Regenerative Medicine conducted a successful organ replacement with a laboratory-grown bladder. Since then, the team, led by Dr. Atala, has continued to generate a variety of other tissues and organs 一 from kidneys to ears.
The field of regenerative medicine builds on work conducted in the early twentieth century with the first successful transplants of donated human soft tissue and bone. However, donor organs are not always the best option. First of all, they are in short supply, and many people die while waiting
for an available organ; in the United States alone, more than 100,000 people are waiting for organ transplants. Secondly, a patient’s body may ultimately reject the transplanted donor organ. An advantage of regenerative medicine is that the tissues are grown from a patient’s own cells and will not be rejected by the body’s immune system.
Today, several labs are working to create bioartificial body parts. Scientists at Columbia and Yale Universities have grown a jawbone and a lung. At the University of Minnesota, Doris Taylor has created a beating bioartificial rat heart. Dr. Atala’s medical team has reported long-term success with bioengineered bladders implanted into young patients with spina bifida (a birth defect that involves the incomplete development of the spinal cord). And at the University of Michigan, H. David Humes has created an artificial kidney.
So far, the kidney procedure has only been used successfully with sheep, but there is hope that one day similar kidney will be implantable in a human patient. The continuing research of scientists such as these may eventually make donor organs unnecessary and, as a result, significantly increase individuals’ chances of survival.In the latest field of regenerative medicine, what are replacement parts made of?
| A．Donated cells, tissues and organs. |
| B．Rejected cells, tissues and organs. |
| C．Cells, tissues and organs of one’s own. |
| D．Cells, tissues and organs made of steel. |
What have scientists experimented successfully on for a bioartificial kidney?
| A．Patients. | B．Rats. |
| C．Sheep. | D．Soldiers. |
Why is regenerative medicine considered innovative?
| A．It will provide patients with replacement soft tissues. |
| B．It will strengthen the human body’s immune system. |
| C．It will shorten the time patients waiting for a donated organ. |
| D．It will make patients live longer with bioartificial organs. |
What is the writer’s attitude towards regenerative medicine?
| A．Positive. | B．Negative. |
| C．Doubtful. | D．Reserved. |
Once a neighbour stole one of Washington’s horses. Washington went with a police officer to the neighbour’s farm to get the horse, but the neighbour refused to give the horse up; he claimed (声称) that it was his horse.
Washington placed both of his hands over the eyes of the horse and said to the neighbour, “If this is your horse, then you must tell us in which eyes he is blind.”
“In the right eye,” the neighbour said.
Washington took his hand from the right eye of the horse and showed the police officer that the horse was not blind in the right eye.
“Oh, I have made a mistake,” said the neighbor. “He is blind in the left eye.”
Washington then showed that the horse was not blind in the left eye, either.
“I have made another mistake,” said the neighbor.
“Yes,” said the police officer, “and you have also proved that the horse does not belong to you. You must return it to Mr. Washington.”Why did Mr. Washington go to the neighbor’s farm with a police officer?
| A．Because the neighbor was the police officer’s friend. |
| B．Because he wanted to make the neighbor return the horse. |
| C．Because the police officer was Washington’s friend. |
| D．Because they were invited to the neighbor’s farm. |
When Washington and the police officer reached the neighbor’s farm, the neighbor _____.
| A．immediately admitted that he had stolen the horse |
| B．received them warmly |
| C．said he had lost a horse, too |
| D．didn’t want to give the horse back to Washington |
When Washington asked the neighbor to tell them in which eye the horse was blind, the neighbor _____.
| A．didn’t say anything | B．knew the horse wasn’t blind at all |
| C．thought the horse was really blind | D．said he had stolen the horse |
From the passage, we know _____.
| A．Washington was a wise man |
| B．Washington’s neighbor was cleverer than Washington |
| C．the police officer was the cleverest of the three |
| D．all the three men were not very clever |
I arrived at my mother’s home for our Monday family dinner. The smells of food flew over from the kitchen. Mother was pulling out quilt(被子)after quilt from the boxes, proudly showing me their beauties. She was preparing for a quilt show at the Elmhurst Church. When we began to fold and put them back into the boxes, I noticed something at the bottom of one box. I pulled it out. “What is this?” I asked.
“Oh?” Mom said, “That’s Mama’s quilt.”
I spread the quilt. It looked as if a group of school children had pieced it together; irregular designs, childish pictures, a crooked line on the right.
“Grandmother made this?” I said, surprised. My grandmother was a master at making quilts. This certainly didn’t look like any of the quilts she had made.
“Yes, right before she died. I brought it home with me last year and made some changes,” she said. “I’m still working on it. See, this is what I’ve done so far.”
I looked at it more closely. She had made straight a crooked line. At the center of the quilt, she had stitched(缝) a piece of cloth with these words: “My mother made many quilts. She didn’t get all lines straight. But I think this is beautiful. I want to see it finished. Her last quilt.”
“Ooh, this is so nice, Mom,” I said.
It occurred to me that by completing my grandmother’s quilt, my mother was honoring her own mother. I realized, too, that I held in my hands a family treasure. It started with the loving hands of one woman, and continued with the loving hands of another.
72. Why did the author go to mother’s home?
A. To see her mother’s quilts. B. To help prepare for a show.
C. To get together for the family dinner. D. To discuss her grandmother’s life.
73. The author was surprised because __________________.
A. the quilt looked very strange. B. her grandmother liked the quilt.
C. the quilt was the best she had seen. D. her mother had made some changes
74. The underlined word “crooked” in the passage most probably means __________ .
A. unfinished B. broken C. bent D. unusual
75. Which of the following would be the best title for the passage?
A. Quilt Show B. Mother’s Home C. A Monday Dinner D. Grandmother’s Quilt
Opening week specials at Munchies Food Hall.
At the corner of Green and Brown Streets in the city
Monday 7th of January until Sunday.13rd of January 2008
Feast until you’re full! Come down to Monetizes time week to enjoy the special dishes on offer it all of our food outlets. Order from the following:
|
●Succulent chicken rice ●spicy stays beef
●Delicious noodle dishes ●plump porky chips●seafood specialties ●crunchy vegetables
●sweet tropical fruit
Halal food is available at the stall. Malay Mood Heaven
Win Prizes and Gifts!
Spend ＄20.00 or more and win instant prizes fro
m our lucky draw box.
Collect a free party balloon and whistle for each young diner.
Enjoy a free meal if you are the first customer of the day at any of our stalls.
Win a holiday to Western Australia.
A free raffle ticket is given with every receipt. Just fill in your information and place your entry in the box provided.
Winner to be announced in The strait Times on the 15th of January.
Join in the Fun!
Between 7:00 pm and 8:00 pm each evening until the 15th of January, your favorite Channel 3 television actors and singers will entertain you:
●May Lee ●Jackie Chen
●Kim Yap ● Kamala
Autograph sessions will follow each performance! And who will be our extra special mystery star? Come down on Saturday at noon to find out.
68. Munchies Food Hall does NOT sell ____.
A. lamb B. Beef C. pork D. chicken
69. The prices at Munchies are ____.
A. lower than usual B. bargain prices for the opening
C. lower far two people D. lower of you spending ＄21.00
70. Everyone who eats at Munchies will receive a ______.
A. free raffle ticket B. lucky draw coupon
C. free meal D. balloon and whistle
71. I will find out who has won the top to Western Australia when I ______.
A. watch Channel 3 television
B. come down to Munchies at noon
C. read The Straits Times on the 5th of
January
D. attend the lucky draw at Munchies Food Hall
In the future your automobile will run on water instead of gas! You will be able to buy a s
upercomputer that fits in your pocket! You might even drive a flying car!
For each prediction that has come true today, several others have missed by a mile. Many of these predictions didn’t consider how people would want to use the technology, or if people really needed it in their lives or not. Let’s look at some predictions from the not-too-distant past.
Robot Helpers
Where’s the robot in my kitchen? Nowhere, of course. And he’s probably not coming anytime soon. Robots do exist today, but mostly in factories and other manufacturing environments.
Back in the 1950s, however, people said that by now personal robots would be in most people’s homes.
So why hasn’t it happened? Probably because robots are still too expensive and clumsy. And maybe the idea of robots cooking our dinners and washing our clothes is just too weird. At home we seem to be doing fine without them.
Telephones of Tomorrow
In 1964 an American company introduced the video telephone. They said by the year 2000 most people would have a video phone in their homes. But of course the idea hasn’t caught on yet.
Why? The technology worked fine, but it over—looked something obvious: people’s desire for privacy. Would you want to have a video phone conversation with someone after you just step out of the shower? Probably not---it could be embarrassing! Just because a technology available doesn’t always mean people will want to use it.
And finally, how about that crazy prediction of the flying car? It’s not so crazy anymore! But a flying car remains one of the most fascinating technology ideas to capture our imagination. Keep watching the news, or perhaps the sky outside your window, to see what the future will bring.
64. The whole passage is mainly about ________________.
A. predictions that have come true. B. predictions that haven’t come true.
C. why predictions don’t come true easily. D. what technology will bring about.
65. The author of this passage won’t believe that _________________.
A. predictions needn’t consider people’s practical use of technology.
B. the future isn’t always easy to guess.
C. not all past predictions have come true.
D. many of the high—tech things our parents thought we’d be using by now simply never appeared.
66. The underlined word “weird” probably means __________.
A. wonderful B. stupid C. practical D. strange
67. What does the author think of the flying car?
A. It is too difficult to imagine. B. It is too crazy an idea.
C. It is likely to be made. D. It is often reported in the news.
The sea has always interested man. From it he can get food, minerals, and treasure. For thousands of years, he could sail on it. But he could not go far beneath its surface.
Man wants to explore deep into the sea. However, he is not a fish. He must breathe air, so he can’t stay under the water’s surface for any length of time. To explore deep water, man faces even more dangers and problems.
A diver who wants to stay under water for more t
han a few minutes must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a hose(软管) and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. His body is under great pressure.
When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rise
s to surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles(气泡). The diver is then suffering from the bends(潜函病). The bends can cause a diver to double up in pain. They can even kill him.
60. On the whole, this text is about _________.
A. special mixtures of gases in deep sea. B. the problems a diver faces in deep sea.
C. air pressure under the surface of sea water. D. a kind of illness that man suffers in the sea.
61. The text does not say so, but it makes you think that ____________.
A. deep-sea divers should be in good health.
B. divers explore the deep sea only for treasure.
C. there is a special mixture of gases under the sea.
D. diving under the water too quickly causes a kind of illness.
62. Why does a diver get the bends?
A. The air in his blood is used up. B. His diving suit weighs too much.
C. He comes to the surface too quickly. D. He tries to do exercise under the sea.
63. From the text we can learn that _____________.
A. man cannot stay under water for more than a few minutes.
B. the sea began to interest man in the last few years.
C. all divers will get the bends sooner or later.
D. the bends may kill a diver.
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