听材料,回答问题。
(1)
How many lab sessions will the students have every week?
A . One.
B . Two.
C . Three.
(2)
What are the students allowed to wear in the lab?
A . Long scarves.
B . Loose clothes.
C . Tennis shoes.
(3)
Why should the students avoid mixing liquid with paper?
A . It may cause a fire.
B . It may create waste.
C . It may produce pollution.
(4)
What does the speaker mainly talk about?
A . Grades the student will receive.
B . Rules the students should follow.
C . Experiments the students will do.
答案: A
C
A
B