● 题目：

　　Baekeland’s invention, although treated with disdain in its early years, went on to enjoy an unparalleled popularity which lasted throughout the first half of the twentieth century.(剑5, Test 2 passage 1)

　　● 分析：

　　本句的主句为“Baekeland’s invention went on to enjoy an unparalleled popularity”; “although treated with disdain in its early years”为过去分词短语做让步状语;“which lasted throughout the first half of the twentieth century”为定语从句，做popularity的定语，关系词为which。