2. 外语
  3. 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

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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】______
【M1】
选项
答案of改成from
解析 短语搭配及逻辑关系。be made of指的是容易判断出原材料的物品，而be made from指的是难以判断出原材料的物品。这里兼顾到后面的文章中的“substances that have not been produced and used in ages”，可以判断出应该使用后者。
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