1. (2021高二上·长春月考) 听材料，回答问题。

1. （1） How many lab sessions (节、场) will the students have every week?

   A . One. B . Two. C . Three.
3. （2） What are the students allowed to wear in the lab?

   A . Long scarves (围巾). B . Loose (宽松的) clothes. C . Tennis shoes.
5. （3） Why should the students avoid mixing liquid (液体) with paper?

   A . It may cause a fire. B . It may create waste. C . It may produce pollution.
7. （4） What does the speaker mainly talk about?

   A . Grades the students will receive. B . Rules the students should follow. C . Experiments the students will do.