Once lost. . A．it is difficult to get such a chance again B．one can never get su
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Once lost，________.
A．it is difficult to get such a chance again
B．one can never get such a chance again
C．such a chance will never come again
D．to get such a chance will be difficult
试题答案
C 连词＋过去分词作状语时，其逻辑主语为句子的主语。句意：一旦失去，这种机会就再也没有了。