Why must nurses work in shifts？
A. They are careless.
B. Nursing services must be provided continuously.
C. They work at night form. time to time.
D. A shift is usually eight hours long.
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The author of the passage wants to tell us that ______.
A. americans like sports and sports reveal much about the changing ethnic structure of the United States
B. in Washington, several games are played in one day
C. americans like all kinds of games
D. the American games are watched by native-Americans and played by people from different countries
【32】
A. killer
B. loser
C. victor
D. successor
In this monologue, we can learn plants may develop mechanisms and adaptations ______.
A. to protect themselves from disasters
B. to avoid being hurt by human being
C. to fight against the hostile environment
D. to benefit the environment
When did Jane Austen start to write？
A. When she was teenager.
B. When she was less than ten years old.
C. When she was more than twenty.
D. Not mentioned.
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