複選題33. (A) With so many well-documented cases of extraordinary animal behavior, it is hard to understand why so few scientists are taking this evidence seriously. (B) The previous day, the chamois (small goat-like antelopes native to Europe) came down from the mountains into the valleys, something they never usually do. (C) This explanation seems unconvincing, however, as there would have been tremors all over South-east Asia.