Question

【题目】Some China’s factories are moving to poorer parts of China, _________ labor is cheaper.

A. from which B. when C. which D. where

Answer 1

【答案】D

【解析】考查关系副词引导的非限制性定语从句。分析句子成分可知，labor（主语） is （系动词）cheaper（表语），故本题缺状语。本题先行词是parts of China作定语从句的先行词，并且在主系表从句中作地点状语，意为“in these parts of China在中国的这些地方”。故用where引导。