Johnny, _____ into a poor family, had only three years of schooling. [ ]
A.
having born
B.
born
C.
being born
D.
be born
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【单选题】下列标准中,不是综合布线系统标准的是______。 A) ISO/IEC 18011 B) ANSI/TIA/EIA 568-A C) GB/T 50311-2000和GB/T 50312-2000 D) TIA/EIA-568-B.1、TIA/EIA-568-B.2和TIA/EIA-568-B.3