The fact that the golden eagle usually builds its nest on some high cliffs （） it almost impossible to obtain the eggs or the young birds.

A．renders

B．reckons

C．regards

D．relates

可促进胰腺和肝脏分泌NaHCO₃的主要胃肠激素是

A．促胃液素
B．缩胆囊素
C．促胰液素
D．抑胃肽