Don’t talk about such things you are not sure of is what you should keep in mind.A. as;

问题补充：

Don’t talk about such things you are not sure of, is what you should keep in mind.

A. as; which

B. as; that

C. that; as

D. what; where

答案：

(答案→)A. as; which

B. as; that

C. that; as

D. what; where

解析：第一空为“such...as”结构的定语从句。第二空为非限制性定语从句，用“which”指代上句

所说的内容。不要错误选C项，这不是“such...that”结构的结果状语从句，“as”引导的非限制性定语

从句一般不放在句尾，且“as”含有“正如”的意思。句意：不要谈论你拿不准的事，这一点请你牢记

在心。