问：______ in the first row, he can see more clearly. A. Seated B. Sitting  

     老师说A、B都对。难道现在分词和过去分词没区别吗？

答：老师说的对。在一下例句中，也是A、B都对：

        1. _____ 30 km north of the city, Huaiyang Middle School covers an area of 300 mu.

         A. Lying B. Located

        2. _____ school uniform, she looks like an angel.

         A. Wearing B. Dressed in

        3. The workers here are paid _____ their skills.

         A. depending on B. based on

        4. A team of people went into the forest to search for the _____ child.

         A. missing B. lost

        5. He lay on the ground, with his eyes _____ the ceiling.

         A. staring at B. fixed on

        6. _____ the grave situation, we must take immediate action.

         A. Facing B. Faced with

        4. They set up a program_____ promoting understanding between the two peoples.

         A. aimed at B. aiming at