We want such materials can bear high temperature and pressure.A.thatB.asC.whatD.
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We want such materials ________ can bear high temperature and pressure.
A.that
B.as
C.what
D.which
试题答案
B
such materials as 引导的是定语从句,as 在从句中作主语；而such materials that 引导的是结果状语从句，that 在从句中不充当成分。