It may seem like a moment in a science fiction movie. In a fierce battle, a creature loses an arm but, then, grows another one to take its place.

However, this is not science fiction. It is scientific fact. Some fish and amphibians, such as salamanders, can regrow lost limbs and organs.

As mammals evolved they lost the ability to regrow, or regenerate, parts of their body. However, experiments show that it may be possible to regain that ability.

Tropical freshwater zebrafish are popular pets. They are also popular as lab animals. Their embryos(胚胎) are clear, or translucent. They can regrow damaged fins, skin and hearts. Zebrafish are also genetically（基因地） similar to humans.

In 2013, the website Sci-News reported that researchers had found that 70 per cent of “protein-coding human genes” are related to genes found in the zebrafish. The report also said that researchers at the Wellcome Trust Sanger Institute in Britain also found that 84 per cent of genes known to be connected to human disease have a zebrafish counterpart.

Scientist Wang Yadong is one of the Pittsburg researchers. He and his team are studying the ability of zebrafish to regenerate limbs and organs. Wang says you can cut away about 20 per cent of the zebrafish heart and it will regenerate. He add that same process may be able to help humans.

Scientists injected（注射） an “extracellular matrix,” or ECM, from the heart of a zebrafish into a severely damaged mouse heart. They found that the heart muscle regrew in days. They found something else. The healing was even faster when the ECM was taken from zebrafish that was itself in the process of re-growing damaged tissue.

1.The main reason why the zebrafish were chosen as lab animals is that _____________ .

A. they are popular pets

B. their bodies are clear to study

C. they are genetically similar to humans

D. they are easy to find for the researchers

2.What does the underlined word “counterpart” in Paragraph 5 probably mean?

A. A similar thing.

B. A different fish.

C. A human being.

D. A little mouse.

3.After injecting ECM from a zebrafish into the damaged mouse heart, what did scientists find?

A. The zebrafish died quickly.

B. The mouse heart regrew in days.

C. The zebrafish heart regrew quickly.

D. The mouse healed more slowly than normal.

4.Where is the most probably taken from?

A. A science fiction.

B. A guide book.

C. A fashion magazine.

D. A science report.

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科目：高中英語 來源：四川省2016-2017學(xué)年高二3月月考英語試卷 題型：完形填空

I used to work as a waitress in a little restaurant. I felt frustrated then so I had been____that period. I hadn’t told anybody except my employer. Somehow a____had overheard (無意中聽到) my saying that I had to go to another____As I passed her table, she____me a card with her phone number on it. She explained that she lived in Sydney and that I should call____I needed any help.

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She treated me so____that I offered her a gift to express my____but she refused. She said “Your____to me is to offer your help to another when it is____” Over the months we kept in touch but then for some reason our communication got less and less____

I always felt I wasn’t giving enough to others as a____, but she had told me that I gave her very much and the way I____people was a gift. I now give a hand to others every day even if it is only a smile to those who have none to give.

1.A. going through B. worrying about C. wishing for D. dreaming of

2.A. manager B. waiter C. customer D. friend

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4.A. showed B. handed C. lent D. returned

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6.A. her B. their C. my D. his

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科目：高中英語 來源：江西省2017屆高三第三次模擬考試英語試卷 題型：閱讀理解

Welcome to Whitney High School!

Spring Kids Dance Clinic

The WHS Dance team is hosting the annual Spring Dance Clinic for children aged 5-13. If you are interested in your son or daughter attending this camp, you may download the form and return it to the WHS office or register online!

QUESTIONS? CONTACT: Halley Crandell at hcrandell@rocklinusd.org WHERE: Whitney High School Cafeteria

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Please sign up in the College and Career Center by April 21st to secure a spot.

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Lions Club Student Speech Contest

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Open to grades 9 -12. No less than 5 minutes and No more than 10 minutes.

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On April 28 th at 8:30 am, the Whitney Wildcat will leave his stadium and attempt to outrun the hundreds of runners trying to catch him!

This will be a fun exciting way to challenge yourself and provide needed funds for two great causes! The WHS track and field team is raising money for equipment. Secondly, we are raising money for the Heidi Greenwood Scholarship. All profits on T-shirt sales will go directly to the scholarship!

Entry to the race is $15 and T-shirt sales will be on site. Go to https://goo.gl/QANQg8 to register!

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A. Mark Snow.

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D. To draw parents’ attention to the school.

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1.詞數(shù)80左右；

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3.開頭和結(jié)尾已為你寫好，不計入總詞數(shù)。

Dear Sir or Madam,

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刪除：把多余的詞用斜線(\)劃掉。

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2.只允許修改10處，多者（從第11處起）不計分。

My mother is always ready to help the others. I still remember one afternoon two year ago when my mother invited a poor woman in our home for a meal. She asked me prepare a meal for the woman. I didn’t understand my mother. Why should I make a meal for such poor a woman? I thought deep about it at that moment. See that I was unhappy, Mother calls me to her room. She said to me, “I know you are unhappy. But everyone need others’ help, and maybe you will have troubles tomorrow. Unless you can help somebody today, why not just do it?”

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Jim had a lot of homework to do, but he ______ to finish it before bedtime.

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科目：高中英語 來源：河北省唐山市2017屆高三下學(xué)期第一次模擬考試?yán)砜朴⒄Z試卷 題型：短文填空

閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個單詞）或括號內(nèi)單詞的正確形式。

With only about 1,800 ones left in the wild, all giant pandas are precious. However, Qizai, 1.seven-year-old panda that lives at the Foping Panda Valley in China’s Shaanxi province, is even more so. That’s because he is among a handful of giant pandas 2.(know) to be the only one 3.brown and white fur in the reserve. The 220-pound Qizai has become a superstar, and many 4.(toy) in his color have been made. However, life has not always been easy for him.

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Researchers are not sure why Qizai has different fur. Some assume that the brown fur is a result of a gene problem and 8.(discover) by observing Qizai’s children.

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科目：高中英語 來源：湖北省、孝感一中等八所重點高中協(xié)作體2016-2017學(xué)年高二下學(xué)期期末考試英語試卷 題型：閱讀理解

When Nancy Flexer opened the door to her classroom near the end of her final school year, all 41 years of her career as a beloved first-grade teacher came to life right in front of her.

Cole Elementary School in Tennessee surprised Flexer with a memorable and emotional retirement party featuring former students of all ages, dating back to the first class she taught in the 1973-74 school year. A video of the event shows an overwhelmed Flexer being moved to tears as she hears former students who are now adults tell her how much she affected their lives.

"I'm one of the luckiest people in this world," Flexer said. "I remember I opened the door to the classroom thinking no one was in there, and it was wall-to-wall people and banners and everything. It was the coolest thing that could've ever happened in my life. How many times do we really realize the lives we've touched, the manner in which we've touched them, and that these are memories that stay with them for life?"

Despite being young when they were taught by Flexer, students easily recalled the heartwarming notes she wrote them on report cards, the ways she helped them overcome shyness and awkwardness, and how she inspired them to future academic success to earn scholarships and advanced degrees.

Even though Flexer hadn't seen some of the former students for decades, she instantly remembered the names of every single one there.

A scrapbook(剪貼簿) of her career was presented to her as one student after another recalled the effect Flexer had on his or her life.

“I’ve had many opportunities to move to a school closer to my home, but I said ‘Cole gave me so much in my life that when I retire, I will retire from Cole school and give back what’s been given to me.” Flexer said. “My career could’ve taken me nowhere that would have made me happier. I think of it as a blessing.”

1.We learn from the text that the retirement party__________.

A. was beyond Flexer’s expectations

B. attracted many of Flexer’s friends

C. was full of appreciative parents

D. was organized by Flexer’s students

2.Flexer’s former students ___________.

A. helped her overcome her shyness

B. presented her with cards

C. held a party to express their happiness

D. bore her help and inspiration in mind

3.What can we infer from the last paragraph?

A. Flexer missed many chances of further studies

B. Flexer once studied in Cole Elementary School

C. Flexer loved her teaching career in Cole

D. Flexer refused many other school’s invitations

4.What would be the best title for the text?

A. An interesting party

B. A teacher’s 41-year teaching career

C. Students’ memories of their beloved teacher

D. Students fro 41 years surprise their beloved teacher

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