In Thailand，you can expose the soles of your feet or use your feet to refer to things.

Be sure to keep your feet flat on the floor or pointed behind you as pointing the soles of your feet at another can be offensive

What is the spray used for（） A: To protect the boots from water. B: To protect the soles from heat. C: To protect the floors from soles. D: To protect the boots from rubber.

A patient: Palpitation, amnesia, insomnia, dream-disturbed sleep,<br/>accompanied by a feverish sensation in palms, soles and the heart<br/>region, night sweats, dryness of the mouth, a red tongue with a<br/>little saliva and a thready, rapid pulse.Please Differentiate<br/>syndrome? A: Lung-qi<br/>deficiency syndrome B: Deficiency of Heart-yin syndrome C: Deficiency<br/>of Heart-blood syndrome D: Deficiency of Heart-yang syndrome E: Heat<br/>syndrome