Looking around on the island,we could see no （） message of lifeA.noticeB.signC.exampleD.message

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Looking around on the island,we could see no （） message of lifeA.noticeB.signC.exampleD.message

Looking around on the island,we could see no （） message of lifeA.noticeB.signC.exampleD.message
Looking around on the island,we could see no （） message of life
A.notice
B.sign
C.example
D.message

Looking around on the island,we could see no （） message of lifeA.noticeB.signC.exampleD.message
B正确

选b,是标识的意思