快速導航
學歷類
職業資格
公務員
醫衛類
建筑工程
外語類
外貿類
計算機類
財會類
技能鑒定
Section C
What a lovely place Xerox is to work Kim Moloney, a client services
executive, can’t say enough nice things about her employer. ‘It’s a very special
environment,’ she says. ‘People describe Xerox as a family and I was amazed at
the number of people who have worked here for so long.’ It’s tempting to take
Moloney’s comments with a pinch of salt, especially considering that when you’ve
been working somewhere for only two years, as she has at Xerox, everyone seems
old and established. But there’s truth behind her enthusiasm.
Take Carole Palmer, the group resources director. She joined Xerox in 1978 as
a temp and has been in her present role for seven years. ‘Xerox has been good to
me over the years,’ she says. ‘It has supported me through qualifications … and
last year I took part in the vice-president incumbent program.’ Human resources
is taken seriously at Xerox, Palmer says, and the company has a policy of
promoting from within (which would explain Moloney’s amazement at her
colleagues’ longevity). The company takes on only fifteen to twenty graduates
each year and Moloney was part of an intake who joined having already acquired a
couple of years’ work experience. She started as a project manager for Xerox
Global Services before moving into sales. Now her responsibility is to ‘grow and
maintain customer relationships’.
Moloney is based at the head office in Uxbridge. ‘It’s great in terms of
working environment,’ she says. ‘We’ve just got a new provider in the canteen
and … we have brainstorming rooms and breakout areas.’ Much of Moloney’s role is
visiting clients, so she doesn’t have a permanent desk at head office. ‘I’m a
hot-desker, which is good because you get to sit with different people in the
hot-desk areas. And you’re given a place to store your things.’ Head office
staff numbers between 1,200 and 1,500 people, Palmer says. The company has four
other main offices in the UK. The nature of the organization, which encompasses
sales and marketing, global services (the biggest division), developing markets,
research and development and manufacturing, means that the opportunities at the
company vary from service engineers to sales roles and consultants.
Perks include a final-salary pension scheme and various discount schemes. The
reward and recognition scheme is a little different, and rather nice: ‘Each
manager has a budget every year to recognize and reward staff,’ Palmer says. ‘It
can be in the form of a meal for two, or a bottle of wine. It can be up to
￡1,000. There’s the recognition, and then there’s putting money behind it.’
Moloney, however, likes the non-cash rewards. ‘Xerox takes care of all its staff
but it also recognizes the people who put in the added effort,’ she says. ‘It
offers once-in-a-lifetime incentive trips, and recently I organized a sailing
trip for my team.’
The idea of working abroad with the company appeals to her, and she says that
her career goal is to be part of the senior management team. Here’s another
employee, it would seem, who is in it for the long haul.
( )1.The journalist of this article thinks that .
A. staff at Xerox are not telling the truth abut the company.
B. Xerox offers great benefits to staff.
C. Xerox is the best company in the world.
D. Xerox has the best working environment.
( )2.The company tends to find its new manager .
A. only form graduates B. on training courses
C. from existing staff D. from job markets
( )3.What does the phrase “to take on” in the sentence “The company takes on
only fifteen to twenty graduates each year and …” of the second paragraph mean?
.
A. To train B. To employ
C. To interview D. To maintain(A)
( )4.As well as recognizing its staff through promotion, Xerox .
A. gives cash bonuses
B. gives unpaid leave to take trips of a lifetime.
C. provides a number of perks.
D. provides huge end-of-year bonuses.
( )5.One common feature of Xerox staff is that they tend .
A. to work hard B. to get promoted
C. work longer hours each day D. not to change employer
Don't wash those fossils!
Standard museum practice can wash away DNA.
1.Washing, brushing and varnishing fossils — all standard conservation
treatments used by many fossil hunters and museum curators alike — vastly
reduces the chances of recovering ancient DNA.
2.Instead, excavators should be handling at least some of their bounty with
gloves, and freezing samples as they are found, dirt and all, concludes a paper
in the Proceedings of the National Academy of Sciences today.
3.Although many palaeontologists know anecdotally that this is the best way
to up the odds of extracting good DNA, Eva-Maria Geigl of the Jacques Monod
Institute in Paris, France, and her colleagues have now shown just how important
conservation practices can be.This information, they say, needs to be hammered
home among the people who are actually out in the field digging up bones.
4.Geigl and her colleagues looked at 3,200-year-old fossil bones belonging to
a single individual of an extinct cattle species, called an aurochs.The fossils
were dug up at a site in France at two different times — either in 1947, and
stored in a museum collection, or in 2004, and conserved in sterile conditions
at -20 oC.
5.The team's attempts to extract DNA from the 1947 bones all failed.The newly
excavated fossils, however, all yielded DNA.
6.Because the bones had been buried for the same amount of time, and in the
same conditions, the conservation method had to be to blame says Geigl."As much
DNA was degraded in these 57 years as in the 3,200 years before," she says.
Wash in, wash out
7.Because many palaeontologists base their work on the shape of fossils
alone, their methods of conservation are not designed to preserve DNA, Geigl
explains.
8.The biggest problem is how they are cleaned.Fossils are often washed
together on-site in a large bath, which can allow water — and contaminants in
the form of contemporary DNA — to permeate into the porous bones."Not only is
the authentic DNA getting washed out, but contamination is getting washed in,"
says Geigl.
9.Most ancient DNA specialists know this already, says Hendrik Poinar, an
evolutionary geneticist at McMaster University in Ontario, Canada.But that
doesn't mean that best practice has become widespread among those who actually
find the fossils.
10.Getting hold of fossils that have been preserved with their DNA in mind
relies on close relationships between lab-based geneticists and the excavators,
says palaeogeneticist Svante P bo of the Max Planck Institute for Evolutionary
Anthropology in Leipzig, Germany.And that only occurs in exceptional cases, he
says.
11.P bo's team, which has been sequencing Neanderthal DNA, continually faces
these problems."When you want to study ancient human and Neanderthal remains,
there's a big issue of contamination with contemporary human DNA," he says.
12.This doesn't mean that all museum specimens are fatally flawed, notes P
bo.The Neanderthal fossils that were recently sequenced in his own lab, for
example, had been part of a museum collection treated in the traditional way.But
P bo is keen to see samples of fossils from every major find preserved in line
with Geigl's recommendations — just in case.
Warm and wet
13.Geigl herself believes that, with cooperation between bench and field
researchers, preserving fossils properly could open up avenues of discovery that
have long been assumed closed.
14.Much human cultural development took place in temperate regions.DNA does
not survive well in warm environments in the first place, and can vanish when
fossils are washed and treated.For this reason, Geigl says, most ancient DNA
studies have been done on permafrost samples, such as the woolly mammoth, or on
remains sheltered from the elements in cold caves — including cave bear and
Neanderthal fossils.
15.Better conservation methods, and a focus on fresh fossils, could boost DNA
extraction from more delicate specimens, says Geigl.And that could shed more
light on the story of human evolution.
(640 words nature )
Glossary
Palaeontologists 古生物學家
Aurochs 歐洲野牛
Neanderthal (人類學)尼安德特人，舊石器時代的古人類。
Permafrost (地理)永凍層
Questions 1-6
Answer the following questions by using NO MORE THAN THREE WORDS for each
answer.
1.How did people traditionally treat fossils?
2.What suggestions do Geigl and her colleagues give on what should be done
when fossils are found?
3.What problems may be posed if fossil bones are washed on-site? Name
ONE.
4.What characteristic do fossil bones have to make them susceptible to be
contaminated with contemporary DNA when they are washed?
5.What could be better understood when conservation treatments are
improved?
6.The passage mentioned several animal species studied by researchers.How
many of them are mentioned?
Questions 7-11
Do the following statements agree with the information given in the passage?
Please write TRUE if the statement agrees with the writer FALSE if the statement
does not agree with the writer NOT GIVEN if there is no information about this
in the passage.
7.In their paper published in the Proceedings of the National Academy of
Sciences，Geigl and her colleagues have shown what conservation practices should
be followed to preserve ancient DNA.
8.The fossil bones that Geigl and her colleagues studied are all from the
same aurochs.
9.Geneticists don't have to work on site.
10.Only newly excavated fossil bones using new conservation methods suggested
by Geigl and her colleagues contain ancient DNA.
11.Paabo is still worried about the potential problems caused by treatments
of fossils in traditional way.
Questions 12-13
Complete the following the statements by choosing letter A-D for each
answer.
12.“This information” in paragraph 3 indicates:
[A] It is critical to follow proper practices in preserving ancient DNA.
[B] The best way of getting good DNA is to handle fossils with gloves.
[C] Fossil hunters should wear home-made hammers while digging up bones.
[D] Many palaeontologists know how one should do in treating fossils.
13.The study conducted by Geigl and her colleagues suggests:
[A] the fact that ancient DNA can not be recovered from fossil bones
excavated in the past.
[B] the correlation between the amount of burying time and that of the
recovered DNA.
[C] the pace at which DNA degrades.
[D] the correlation between conservation practices and degradation of
DNA.
主站蜘蛛池模板：
亚洲色偷偷偷网站色偷一区|
亚洲精品无码久久毛片|
久久精品九九亚洲精品天堂|
国产70老熟女重口小伙子|
国产精华av午夜在线|
亚洲加勒比少妇无码av|
国产麻豆精品乱码一区|
国产精品天干天干在线综合|
精品国精品国产自在久国产应用|
狠狠躁夜夜躁人人爽天天不卡软件|
伊伊综合在线视频无码|
成人免费视频一区二区三区|
中文字幕无码av正片|
精品熟女少妇av久久免费软件|
日韩精品射精管理在线观看|
国产98色在线 | 日韩|
久久精品99无色码中文字幕|
亚洲精品国产精品乱码在线观看|
学生妹亚洲一区二区|
天天天欲色欲色www免费|
十八禁在线观看视频播放免费|
人妻少妇久久中文字幕一区二区|
日本强伦姧人妻久久影片|
十八禁免费观看|
国产精品国产三级国产av麻豆|
无线日本视频精品|
国内精品自线在拍|
日韩国产人妻一区二区三区|
日日干夜夜操|
熟女体下毛毛黑森林|
人人妻人人澡人人爽精品欧美|
亚洲国产成人久久综合一区|
人妻系列无码专区2020|
强被迫伦姧在线观看无码|
免费观看性欧美大片无片|
亚洲av之男人的天堂|
中文国产乱码在线人妻一区二区|
97av麻豆蜜桃一区二区|
中文字幕在线日亚州9|
在线观看的av网站|
精品欧美一区二区三区久久久|
