Question

Fortunately , the adventurers brought the GPS with themselves,       they might have been lost in the desert.

A．of which

B．without which

C．in which

D．about which

Answer 1

B

解析试题分析：句意：幸运的是，探险者们随身带着GPS，没有它他们可能就会迷失在沙漠中。此处the GPS是先行词，在定语从句中在介词的宾语。故选B。
考点：考查非限制性定语从句的关系词。