_______ about wild plants that they decided to make a trip to Madagascar for further research.

A．So curious the couple were

B．Such curious the couple were

C．Such curious were the couple

D．So curious were the couple

关于图中示意的自然现象，下列说法错误的是（）

A．山峰两侧可能呈现完全不同的自然景观

B．气流随地形抬升是图中降水的主要原因

C．图中的降水往往会持续较长时间

D．翻过山脉后气流温度会有所上升