听短文,回答小题。
(1)
On which day is World Sleep Day held?
A . March 21.
B . March 25.
C . March 31.
(2)
What benefit is mentioned about enough sleep?
A . Being stronger.
B . Being cleverer.
C . Being taller.
(3)
What percentage of adults have a full eight hours of sleep each workday?
A . 21%.
B . 27%.
C . 80%.
(4)
What can we learn from the passage?
A . World Sleep Day started in 2006.
B . Teenagers need at least 8 hours of sleep a night.
C . 80% of people throughout the world have sleep problems.
答案: A
B
A
B