使用碱性焊条或薄板的焊接，采用（）。

A．直流正接

B．交流反接

C．交流正接

D．直流反接

用所给词的正确形式填空。

1. September 1 is the _____ (one) day of our new term.

2. Go _____ the bridge, and you will find it.(cross).

3. She usually _____ (watch) TV on Saturday evening.

4. He doesn't _____ (do) his homework every day.

5. Ms. Lin (be) _____ never late for class.

6. The boy in blue pants is _____ brother. (Jane)

7. There (be) _____ some water in the bottle.

8. How many _____ are there in your home? (study)

9. She is _____ to me. (friend)

10. My father goes to the _____ pool every afternoon. (swim)