问题补充:
There’re more than 100 elements found in nature, are metals.
A. most of which
B. most of them
C. most of that
D. most which
答案:
(答案→)A. most of which
B. most of them
C. most of that
D. most which
解析: 考查介词+关系词引导的定语从句。先行词为100 elements关系词which,自然界中已经发现的100种元素中大部分是金属元素。