A:that; that
B:where; where
C:where; that
D:that; where
____
夏天,人站在电扇下感到凉爽,这是因为电风扇加快了 ____ 缘故;若将一干燥的温度计放在电扇下吹,则温度计的示数将 ____ (填“增大”“不变”或“减小”)