21. What is the purpose of this passage?
(A) To give details about a scheduled fire drill
(B) To encourage attendance at a safety workshop
(C) To describe recent fire damage in the community
(D) To provide helpful advice for emergency situations
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統計: A(0), B(0), C(0), D(4), E(0) #3556623
統計: A(0), B(0), C(0), D(4), E(0) #3556623