用所给单词的正确形式填空。

1. _____________ he like collecting stamps? (do)

2. I'm going to _____________ a doctor. (be)

3. My father usually _____________ newspapers after lunch. (read)

4. My brother likes _____________ a bike. (ride)

5. She _____________ to school on foot. (go)

6. What are you going _____________ this afternoon? (do)

7. We can _____________ the flower in several weeks. (see)

8. They _____________ next to the bookstore. (live)

9. Where does the cloud _____________ from? (come)

10. His pen pal _____________ strong arms. (have)

钳形电流表的使用方法及注意事项中，正确的是（）。

A.在使用前应仔细阅读说明书，弄清是交流还是直流两用钳形表

B.每次只能测量一相导线的电流

C.钳形表都有量程转换开关，测量前应先估计被测电流的大小，再决定用哪一量程

D.钳口在测量时闭合要紧密