我将放两遍磁带，第一遍只听，第二遍做题。怎么翻译

You will listen to the tape twice.

The first time, just listen.

The second time, answer the questions while you listen.

I'll play the tape for two times.
The first time is just for listening.
The second time is for answering questions.

The tape will be played twice, in the first playing, you should just listen and in the second one you should complete the questions.