单选题
5.
So quickly is technology advancing ______ is a possibility today may be a reality tomorrow.
A、
that
B、
that which
C、
if what
D、
that what
【正确答案】
D
【答案解析】
此句用的是so...that...结构，连词that引导结果状语从句，what is a possibility today为结果状语从句中的主语部分。
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