Although the heavy rain stopped, it was at least an hour later that the flood began to ______

A．They hid in caves and cellars.
B．They tried to reduce the temperature.
C．They killed 7943 species of plants and animals.
D．They ate ice so that the body temperature was reduced.

A．In the tropics while animals and plants died of hot temperature people all survived in their caves and cellars.
B．People living near Cairo were not used to humid temperature and began to have breathing problems.
C．When the temperature of the surface waters of the sea rose, the air became damper.
D．People in some latitudes learnt certain skills from animals to cope with hot weather.