73 According to Professor Steffen, which of the following is more threatening to the health of people attending a huge public gathering?
(A)Injuries
(B)Infectious diseases
(C)The mood of event organizers
(D)Insufficient budget for an event

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統計: A(46), B(36), C(22), D(14), E(0) #769519

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Robert Steffen, a pr...
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