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Art can be made of almost anything, including substances 【M1】______ that have not been produced and used in age
Art can be made of almost anything, including substances 【M1】______ that have not been produced and used in age
admin
2013-10-08
52
问题
Art can be made of almost anything, including substances 【M1】______
that have not been produced and used in ages, and it comes in all shapes and sizes.
More importantly, scientists have to study art without affecting it, 【M2】______
and that usually means limited, destructive tests. 【M3】______
If they have to take a sample, it must be as small as possible.
In the objects conservation lab,
the big samples look as the period at the end of this sentence. 【M4】______
Small samples are microscopic. The scientists have developed
creative ways to deal the constraints. Consider the case of the fish penda 【M5】______
Gold with multicolored enamel, it was originally thought to date in the 16th century.【M6】______
And curators and conservators saw that the style was all wrong for that period.【M7】______
It was either mislabeled or a pretence. Mark Wypyski, a glass specialist who runs【M8】______
the scanning electron microscope at the museum, took a tiny porcelainlike sample
from a green part of the pendant and bombarded it with electrons, causing it
to emit X-rays characteristic of the elements in it. Mr. Wypyski interpreted
the results as they popped on a computer monitor. 【M9】______
There was chromium, which was not used in glass or enamels
since the 19th century. 【M10】______
【M7】
选项
答案
And改成But
解析
逻辑关系。由上下文判断,这里指的是“本来认定为……”,但发现事实并不是这样,因此应当使用转折连词。
转载请注明原文地址:https://kaotiyun.com/show/S1ZO777K
0
专业英语八级
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