题型:阅读理解 题类:常考题 难易度:普通
宁夏石嘴山市第三中学2016-2017学年高一下学期期末考试英语试卷
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 (蛋白质) in hair, on the other hand, is more stable than DNA but can also have variations (变异体) 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.”
H.Y.B.ARTS CENTRE | |
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DICK TRACY Running time: 113 mins. Mon 11 -- Sat 16 February 6 pm Tickets on sale 5-6 pm Director: Warren Beatty Starring: Warren Beatty, Madonna | The famous detective tries to stop Big Boy and the Blank from taking over the city. A colourful and exciting film. Some parts are frightening, so think twice about taking children. |
BATMAN Running time: 126 mins. Mon 11-Sat 16 February 8: 30 pm Tickets on sale 7: 30-8: 30 pm PIZZA PLUS offer 6-7 pm Director: Tim Burton Starring: Michael Keaton, Jack Nicholson | A few essential questions must be asked. Is Batman a mad hero? Why does Bruce Wayne spend millions dressing up as a bat? Has Nicholson's joker stolen the whole movie? Great action and excellent acting, especially by Nicholson. |
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Welcome to your handy pricing guide
This leaflet gives you the prices for Royal Mails UK and International services and Parcelforce Worldwide UK services — whether your item is to the UK or abroad, urgent or you simply want a standard service. To obey national and international regulations governing the carriage of mail, and ensure that mail in transport does not present a danger to the general public, we restrict or ban certain items from our network.
Letters |
Length Limit (cm) |
Width Limit (cm) |
Thickness Limit (cm) |
Weight Limit(g) |
Price(£/100g) |
Standard |
24 |
16.5 |
0.5 |
100 |
1.8 |
Large |
35.3 |
25 |
2.5 |
750 |
2.3 |
Parcels |
Length Limit (cm) |
Width Limit (cm) |
Depth Limit (cm) |
Weight Limit (kg) |
Price(£/kg) |
Small |
45 |
35 |
8 |
2 |
4.3 |
35 |
25 |
16 |
2 |
||
Medium |
61 |
46 |
46 |
20 |
6.8 |
Large |
150 |
300 |
60 |
30 |
9.0 |
Only available on Parcelforce Worldwide services. |
If you want to find out more about our parcel and letter services, please take a look at the 'our services' booklet for more detailed information. Alternatively, you can find out more by visiting www.royalmail.com or by calling Customer Services on 03457740740. If you are deaf or hearing impaired, we offer a Textphone service on 03456000606.
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