1Certain artifacts are especially vulnerable because some pioneers in plastic art didn’t always know how to mix ingredients properly, says Thea van Oosten, a polymer chemist who, until retiring a few years ago, worked for decades at the Cultural Heritage Agency of the Netherlands (RCE).
主干主语：Certain artifacts；谓语：are；表语：especially vulnerable；引述结构：says Thea van Oosten
结构主句后接 because 引导的原因状语从句。逗号后为倒装引述：says + 说话人。Thea van Oosten 后是同位语 a polymer chemist，再接 who 引导的定语从句；从句中插入 until retiring a few years ago 作时间状语，打断 who 与谓语 worked 的线性关系，属考研常见“定语从句套插入语”。
译文某些文物特别脆弱，因为塑料艺术的一些先驱并不总是知道如何把配料调配得当——聚合物化学家西娅·范奥斯滕如是说。她几年前才退休，此前在荷兰文化遗产局工作了数十年。
考点引述动词 says 置于句中、主语后置 · who 定语从句中插入 until doing 时间状语
2All of which creates huge headaches for institutions, such as museums, trying to preserve culturally important objects.
主干主语：All of which；谓语：creates；宾语：huge headaches
结构All of which 指代前文塑料老化的种种表现，构成非限定性关系结构独立成句。for institutions 为间接对象；such as museums 插入举例；trying to preserve... 是现在分词短语作后置定语，修饰 institutions，不是主句谓语。易误把 trying 当成 museums 的谓语。
译文凡此种种，都给博物馆等试图保存具有文化价值之物的机构带来巨大麻烦。
考点All of which 承上指代并独立成句 · 现在分词短语作后置定语，勿当成并列谓语
3Those pieces included small beds of roses and other items as well as a few dozen “ nature carpets ” — large rectangles decorated with foam pumpkins, cabbages, and watermelons.
主干主语：Those pieces；谓语：included；宾语：small beds... as well as a few dozen “ nature carpets ”
结构included 后接 as well as 连接的并列宾语。破折号后 large rectangles... 是对 nature carpets 的同位语解释；decorated with... 为过去分词短语作后置定语，修饰 rectangles。引号内专名与破折号同位语是阅读干扰点。
译文这些作品既有小型玫瑰花坛等物件，也包括几十块“自然地毯”——装饰着泡沫南瓜、卷心菜和西瓜的大块长方形。
考点as well as 连接并列宾语 · 破折号后同位语 + 过去分词后置定语
4She is proud that several sculptures have even gone on display again, albeit sometimes beneath protective cases.
主干主语：She；谓语：is；表语：proud；宾语从句：that several sculptures have even gone on display again
结构proud 后接 that 引导的宾语从句（形容词补足成分）。even 强调再次展出之不易。albeit 引导让步状语，相当于 although，后常接省略结构（sometimes beneath...），修饰 gone on display 的方式/条件，语气比 although 更书面。
译文她颇为自豪的是，有几件雕塑甚至重新展出了，尽管有时仍罩在保护罩下。
考点be proud that 接宾语从句 · albeit 引导省略型让步状语
5Joana Lia Ferreira, anassistant professor of conservation and restoration at the NOVA School of Science and Technology, notes that archaeologists first defined the great material ages of human history—Stone Age, Iron Age, and so on—after examining artifacts in museums.
主干主语：Joana Lia Ferreira；谓语：notes；宾语：that 从句（archaeologists defined the great material ages）
结构主语与谓语 notes 之间插入较长同位语（职务+单位）。that 引导宾语从句；从句中 first defined... 为谓语；破折号插入 Stone Age 等举例，作 material ages 的同位列举；after examining... 为时间状语，说明“界定”发生在检视馆藏文物之后。插入成分多，主干易被打断。
译文新里斯本科学技术学院保护与修复助理教授若安娜·利亚·费雷拉指出，考古学家正是在检视博物馆文物之后，才首次界定了人类历史上那些伟大的材料时代——石器时代、铁器时代等等。
考点长同位语插入主谓之间 · 破折号列举作同位语 + after doing 时间状语