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Though the college entrance exam is drawing near, study shouldn’t take up all of your time. It’s important to some time for relaxation and hobbies as well.

A. put away B. set aside C. lay down D. take off

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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.

1.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.

2.What have scientists experimented successfully on for a bioartificial kidney?

A. Patients. B. Rats.

C. Sheep. D. Soldiers.

3.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.

4.What is the writer’s attitude towards regenerative medicine?

A. Positive. B. Negative.

C. Doubtful. D. Reserved.

C

Join the Family Read-Aloud Celebration, held by the Gonda Family Library and the Family School Alliance at UCLA Lab School, from February 21 to March 14,2014. We ask you to spend time reading aloud to your children at least 20 minutes each day.We hope to help families develop a habit of reading aloud every day throughout and beyond primary school. We'll finish the celebration with a party on March 14 for the whole school.

Ways to join:

● Visit Book Corner for reading aloud suggestions.

Come to the start of the activity on Friday, Feb, 21.

● Add books to our list of favorite read aloud

● Send us a photo of your family reading together (jkan,tor@ucta. edu). We will share it at the party.

● Record your family's reading journey! .

● Join us for th︿ party on March 14,5一7 p. rn.

Go on a reading journey!

Books can introduce your family to interesting people, exciting places, adventures and information. Let your journeys take you through these categories:

●Fiction ● Picture books ● Poetry

●Science ● History ● Sports

●Arts ● other Non-Fiction ● Benefits of Reading Aloud

Reading aloud helps a cloud to read with pleasure, create background knowledge, and build vocabulary. It also provides children with a reading model. Reading aloud doesn't just benefit young children. Parents should continue reading aloud as their children grow because listening comprehension is more important than reading skills in middle school.

Jim Trelease, in his Read-Aloud Handbook, has noted that almost as big a mistake as not reading to children at all is stopping too soon Until about the eighth grade, children listen and comprehend on a higher level than their reading skills allow them to read independently, This means children can hear and understand stories that are more difficult and more interesting than anything they can read on their own

1.What’s the purpose of the Family Read-Aloud Celebration?

A. To celebrate the joys of reading.

B. To help improve family relationship,

C. To change families bad reading habits.

D. To get families into the habit of reading aloud.

2.If you want to join the activity, you're supposed to __

A. mail a book to the school

B. make an appearance at the starting day

C. read out loud from 5~7 p. m every day

D. share your reading experience at the party

3.We can infer from Jim Tyelease that.

A. young children show greater skills at listening than reading

B. children should be allowed to make mistakes in reading

C. interesting stories are easier for children to understand

D. the eighth-graders can-t read on their own

4.In which part of a website can We find the text?

A. Culture B. Lifestyle.

C. Education. D. Science.

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