听第二篇短文,回答第 16 至 20 小题。
(
) 16. What is the speaker mainly introducing?
A. A science museum.
B. A summer camp.
C. A recycling programme.
(
) 17. Who can join in the activity?
A. Primary school students.
B. Middle school students.
C. High school students.
(
) 18. How long will the activity last every Saturday?
A. For 2 hours.
B. For 3 hours.
C. For 4 hours.
(
) 19. What should students bring on the first day?
A. Old clothes.
B. Glass cups.
C. Water bottles.
(
) 20. How can students take part in the activity?
A. By calling the community centre.
B. By visiting the website.
C. By sending an email.