《食品安全法》第二十九条规定，国家对食品生产经营实行（）制度，从事食品流通的经营者须依法取得（）证，先证后照，方可从事经营活动。食品生产许可、食品流通许可和餐饮服务许可的有效期为（）年。

A.许可；食品流通许可；一年

B.生产许可；生产经营许可；三年

C.许可；食品流通许可；三年

D.生产经营；食品流通许可；二年

句型转换。按括号内的要求改写下列句子。

1. The two women are talking to each other. (就划线部分提问)

   ________ are the two women ________?

2. It's about eight thousand five hundred kilometers from China to Canada. (就划线部分提问)

    ________ ________ is it from China to Canada?

3. Let's shop this afternoon. (改为同义句)

    Let's ________ ________ this afternoon.

4. We had fun in Guilin last week. (改为否定句)

    We ________ ________ fun in Guilin last week.

5. Li Ping's father often draws pictures after work. (改为现在进行时态句子)

    Li Ping's father ________ ________ ________ pictures.