问题
选择题
(2013·江苏，28)In the global economy，a new drug for cancer，________it is discovered，will create many economic possibilities around the world.
A．whatever
B．whoever
C．wherever
D．whichever
答案
答案：C
考查状语从句。此处考查－ever引导的让步状语从句。通过分析从句，可知句子不缺少主干成分，故排除代词A、B、D三项，故答案选C。