The President made his last public ______ before his term of office ended.

A．to
B．up
C．above.
D．on

A．In the past, Alzheimer' s disease has often been mistaken as normal human aging.
B．Victims of Alzheimer' s disease rarely need to be institutionalized.
C．There is currently no cure for Alzheimer' s disease.
D．The primary symptoms are serious forgetfulness and confusion.