68．According to the passage，the greatest challenge to the new high-speed railway plan is ．
参考答案
C
According to the passage，the…——2010 高考英语第 64 题答案解析
2010_江苏卷 (英语)
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2010_江苏卷 (英语)
68．According to the passage，the greatest challenge to the new high-speed railway plan is ．
C