Read and write.  

1. A:                                           ?

    B: We're going to the zoo this Sunday.

2. A:                                           ?

    B: I ate dinner at 7:00 last night.

3. A:                                           ?    

    B: John went to school by bus.

4. A:                                           ?  

    B: Mary bought some storybooks in the bookstore.

5. A:                                           ?

    B: No, I went ice-skating last week.

氧化锆探头信号偏高，则测量结果（）。