______ is announced in the papers, our country has launched a largescale movement against smuggling and fraudulent activities in foreign currency exchange deals.
【正确答案】
B
【答案解析】as在此处引导非限制性定语从句，多用于固定搭配中，如：as was discussed before，as ispointed out，as is well-known，as is often the case，as was expected等。which引导的非限制性定语从句不能放在句首，因此选B。