多选题
Which THREE are right about the qualified participants?
A、
children under 18 are not allowed
B、
parents and children
C、
able to hike in mild and moderate terrain
D、
has seen flocks of wild turkey
E、
able to read and sign
F、
previously has an elevation gain of about 900ft
【正确答案】
B、C、F
【答案解析】
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