Chinese athlete Liu xiang’s dropping out of the Olympic Games was really ______; it surely _____ the whole world.

A．astonished; astonished

B．astonishing; was astonished

C．astonishing; astonished

D．astonished; was astonished

关于老年期认知发展的描述，正确的是（）。

A.最早衰退的是视觉

B.味觉在55岁以后的感受性急剧下降

C.视觉在60岁后衰退严重

D.机械记忆减退，回忆力显著下降

E.智力全面减退