“壮水之主，以制阳光”，属于下列何种治法（）

A.阳中求阴

B.热者寒之

C.阴中求阳

D.阳病治阴

E.寒者热之

. Some animals are in danger, and the scientists are doing ___ they can ___ them.

A．that; to save

B．whatever; to save

C．what; save

D．the thing; save