2. 外语
  3. In the main, incidents of breakdowns in nuclear reactors have not resulted from lapses of high technology but commonplace inadeq

In the main, incidents of breakdowns in nuclear reactors have not resulted from lapses of high technology but commonplace inadeq

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问题 In the main, incidents of breakdowns in nuclear reactors have not resulted from lapses of high technology but commonplace inadequacies in plumbing and wiring.
选项 A、not resulted from lapses of high technology but
B、resulted not from lapses of high technology but from
C、resulted from lapses not of high technology but
D、resulted from lapses not of high technology but have stemmed from
E、resulted not from lapses of high technology but have stemmed from
答案B
解析 根据平行结构中not…but后的形式对称要求，可排除C，not之后是介词短语而but之后却为动宾短语，D、E中have stemmed与have resulted同义重复。A中not之后为动宾短语而but之后是名词短语，不对称。只剩下B，not后是from短语，but后是from短语，标准对称且表明“不是来自于…而是来自于…”。
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