20. What should be the unit of the horizontal axis for all three graphs? (A) days before/after terrorist attack (B) weeks before/after terrorist attack (C) months before/after terrorist attack (D) years before/after terrorist attack

25. Pile-dwellings. For what primary purpose are these dwellings built on stilts? (A) 1 = protection against melting floods 2 = protection against seasonal floods (B) 1 = protection against melting floods 2 = protection against vermin (C) 1 = protection against soil subsidence 2 = protection against seasonal floods (D) 1 = protection against soil subsidence 2 = protection against vermin

20. What should be the unit of the horizontal axis for all three graphs? (A) days before/after terrorist attack (B) weeks before/after terrorist attack (C) months before/after terrorist attack (D) years before/after terrorist attack

其他試題

20. What should be the unit of the horizontal axis for all three graphs?
(A) days before/after terrorist attack
(B) weeks before/after terrorist attack
(C) months before/after terrorist attack
(D) years before/after terrorist attack