问题
选择题
So quickly are science and technology advancing ________ is a possibility today may be a reality tomorrow.
A．which
B．what
C．that which
D．that what
答案
答案：D
D 考察典型句式和名词性从句。So…that引导的是结果状语从句，so位于句首引起部分倒装，在结果状语从句中有一个由what引导的主语从句。