问题描述：
英语翻译
the implementation of CASs is effective for periods ending on or after December 15,2009.This clarification does not change the effective date of the initiao adoption of ISA as CASs for full years.This is important for audit of periods of less than a year.
the implementation of CASs is effective for periods ending on or after December 15,2009.This clarification does not change the effective date of the initiao adoption of ISA as CASs for full years.This is important for audit of periods of less than a year.
问题解答：
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