As we know, DNA testing is very useful for crime fighting. But now crime fighters could have a new tool at hand. Researchers have developed a cutting-edge (前沿的) technique to identify human hair. Their test is quicker than DNA analysis techniques currently used by the police.

DNA testing is commonly used for identification because DNA is unique to each individual. However, environmental and chemical processes can degrade(降解) DNA, limiting its usefulness over time. Protein (蛋白質(zhì)) in hair, on the other hand, is more stable than DNA but can also have variations (變異體) that may be unique to the individual.

“Our analysis process can be used universally, ”says Ms. Huang, “One of our samples even included dyed hair and the test was 100 per cent accurate. The test was able to distinguish East Asians, Caucasians and South Asians.”

Dr. Beauchemin says she has got in touch with law enforcement agencies about using the new technology. She is also planning to collect more hair samples and continue her research with a goal of finding where exactly in the world hair sample is from, to look for more races and determine specific age.

“We are in a very similar place with protein-based identification to where DNA testing was during the early days of development,” said chemist Brad Hart. “This method will be a game-changer, and while we’ve made a lot of progress toward improving it, there are steps to go before this new technique is able to reach its full potential.”

1.What’s the main purpose of the text?

A. To analyze crime scenes.

B. To distinguish different races.

C. To show the usefulness of DNA testing.

D. To introduce a new identification method.

2.Which will be the most useful in identifying a person according to Brad Hart?

A. Chemical materials. B. Protein in hair.

C. DNA variations. D. Blood sample.

3.What’s the advantage of the protein-based identification over DNA testing?

A. Stability. B. Popularity.

C. Security. D. Convenience.

4.What can be inferred from the last paragraph of the text?

A. DNA testing will soon reach its full potential.

B. Protein-based identification remains to be improved.

C. Protein-based identification has replaced DNA testing.

D. DNA testing develops as rapidly as protein-based identification.

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科目：高中英語 來源：貴州省凱里市2016-2017學(xué)年高二下學(xué)期期末考試英語試卷 題型：短文填空

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科目：高中英語 來源：吉林省舒蘭市校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

Rainforests, it turns out, are not created equal. Take the Amazon rainforest, an area that covers about 7 million square kilometers. But within that huge expanse are all kinds of ecological zones, and some of these zones, says Greg Asner, are a lot more crowded than others.

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Studying at an university in the UK have been a good experience for me. When I first arrived, I find life very hard as I didn’t know anybody here, but I soon got to know other Chinese student. Later I became accustomed to talk with people from various cultures. Besides, I made fewer friends.

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你校學(xué)生會(huì)需招聘一名留學(xué)生做英語學(xué)習(xí)顧問，請(qǐng)你以短文形式寫一則招聘啟事。內(nèi)容主要包括：

——母語是英語，漢語流利者優(yōu)先

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——每周4小時(shí)，報(bào)酬面議

——聯(lián)系人：李華(Tel.13011223344)

注意：1.詞數(shù)100左右；

2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫；

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English Study Advisor Wanted

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Students' Union

Yucai High School

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HOLIDAY FUN AT THE POWERHOUSE

500 HARRIS STREET ULTIMO·TELEPHONE (02) 9217 0111

Join in the holiday fun at the Powerhouse this month linked to our new exhibition，Evolution & Revolution：Chinese dress 1700s to now.DON’T FORGET our other special event，the Club Med Circus School which is part of the Circus(馬戲團(tuán))！150 years of circus in Australia exhibition experience!

◆Chinese Folk Dancing：Colorful Chinese dance and musical performances by The Chinese Folk Dancing School of Sydney.Dances include：the Golden stick dance and the Chinese drum dance.A feature will be the Qin dynasty Emperor’s court dance.Also included is a show of face painting for Beijing opera performances.

Sunday 29 June and Wednesday 2 July in the Turbine Hall，at 11：30 am & 1：30 pm.

◆Australian Chinese Children’s Arts Theatre：Wellknown children’s play experts from Shanghai lead this dynamic youth group.Performances include Chinese fairy tales and plays.

Thursday 3 to Sunday 6 July in the Turbine Hall，at 11：30 am & 1：30 pm.

◆Chinese Youth League：A traditional performing arts group featuring performance highlights such as the Red scarf and Spring flower dances，and a musician playing Er Hu.

Sunday 6 to Tuesday 8 July in the Turbine Hall，11：30 am to 1：30 pm.

◆Kids Activity：Make a Paper Horse：Young children make a paper horse cut?out.(The horse is a frequent theme in Chinese painting，indicating a kind of advancement.)Suitable for ages 8～12 years.

Saturday 28 June to Tuesday 8 July in the Turbine Hall,12：00 pm to 1：00 pm.

◆Club Med Circus School：Learn circus skills，including the trapeze，trampolining and magic.Not only for children over 5.There are 40 places available in each 1 hour session and these must be booked at the front desk，level 4，on the day.

Tuesday 1 to Saturday 5 July at 11：30 am & 1：00 pm.

Enjoy unlimited free visits and many other benefits by becoming a Family member of the Powerhouse.Our family memberships cover two adults and all children under the age of 16 years at the one address.

Members receive Powerline，our monthly magazine，discounts in the shops and the restaurants，as well as free admission to the Museum.All this for as little as 50.00 a year！Call (02) 9217 0600 for more details.

1.When can you watch the Chinese drum dance?

A. On July 2. B. On July 3.

C. On July 6. D. On July 8.

2.To learn the magic tricks，you can go to .

A. Kids Activity

B. Chinese Youth League

C. Club Med Circus School

D. Children’s Arts Theatre

3.What is required if you want to enjoy free visits to the Museum?

A. Calling (02) 9217 0600.

B. Gaining family membership.

C. Coming for the holiday fun.

D. Paying Powerline 50.00 a year.

4.What is the main purpose of the text?

A. To attract visitors.

B. To present schedules.

C. To report the performances.

D. To teach kids Chinese arts.

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