Dorbear & fyhllj，还是关于费费 CR 21题--取非？

ccfish9

SOME DID NOT INGEST MERCURY (假），SOME DID INGEST MERCURY (必为真）
SOME DID NOT INGEST MERCURY ( 真）， SOME DID INGEST MERCURY ( 可真可假）

the following are also true:

SOME DID INGEST MERCURY (假），SOME DID not INGEST MERCURY (必为真）
SOME DID INGEST MERCURY ( 真）， SOME DID not INGEST MERCURY ( 可真可假）

so,

SOME DID NOT INGEST MERCURY === SOME DID INGEST MERCURY.

please think it again.

-- by 会员 fyhllj (2003/10/3 23:04:00)

fyhllj麻烦再指点下：
上面引用的推理我可以理解，但是使用到题目中的话：
题目问的是基于以下哪个假设，即基于的假设默认是对的。
B假设是：SOME DID NOT INGEST，根据引用部分推理若此为真，那么SOME DID INGEST真假未定啊，并不能填补你在PAGE1里所说的GAP不是么？

请指教！