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唉,昨天考完回家就一直发愣,网也不想上,什么都不想做,VERBAL时间严重不够,看到最后还有几分钟还有十几道题,一下就慌了,实在看不下去,只得瞎猜完了事,看到有人发帖上来激励另外一个考550的筒子,我才重新鼓起劲,打算两个月后重考,不知合不合适,给我些建议吧。
不过还是做做贡献吧,我只会以题目,不能给大家太多的帮助了。 AI:teaching science and technology are more important than teaching atrs and humanities. AA:complaints on Facebook 那道题。
数学真心不记得了,还是不要误导大家的好。
Verbal阅读记得考了四篇 一篇supernova,一篇恐龙灭绝,一片英国零售业,
还有一篇是讲用一种新方法鉴定画的真伪的。我在google了一下,有篇文章很接近,先贴地址http://blogs.scientificamerican.com/observations/2010/09/04/sounds-like-art-fraud-acoustic-waves-give-clues-to-paintings-provenance/
我根据回忆,删减了没用的几段,差不多是以下几段:
In recent decades, art scholars, restorers and forensic specialists have relied increasingly on scientific techniques to determine the chemical composition of a work’s pigments to try to ascertain when, where and by whom it was likely made. One ostensibly ancient Virgin with Child painting was revealed to be a 1920s fake after testing revealed that it contained Prussian Blue, a pigment that was invented in the 1700s—long after the painting would have been made if it were original.
Chemical processing of paint samples can provide useful molecular profiles, but it also means physically damaging a chip. Other methods using x-ray fluorescence, scanning electron microscopy and infrared spectroscopy have helped scholars and technicians peer into ancient paint, but they can be time- and labor-intensive.
A new study shows how sound waves can detect a dozen different inorganic pigments using Fourier-transform photoacoustic infrared (PAIR) spectroscopy (which makes use of signal processing functions developed by French physicist Joseph Fourier). The process is based in part on an 1880 discovery by Alexander Graham Bell, who demonstrated that shining a modulated beam of light onto an object could create a subtle acoustic wave.
"The behavior of paints, pigments, glazes, etc. depends critically on the conditions associated with their production, storage and long-term display," the researchers noted in their paper. "Without a full comprehension of the reactivity of the chemicals involved, the attempted preservation of artworks can sometimes lead to more damage than would occur by just simply leaving the works untreated."
The researchers proposed that these simple readings could be included in a database for quick reference in the future. "Once such a database has been established, the technique may become routine in the arsenal of art forensic laboratories," Ian Butler, a chemistry professor at McGill University and coauthor of the new study, said in a prepared statement。
选项考了1.文章主旨 2.与传统的chemical processing 相比,有什么优点
最后改错出了很多破折号,就这些吧。 |
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