在“百家争鸣”的时代，社会影响最大的是儒墨两家，故有“非儒即墨”之说。然而秦朝统治者践行的却是法家思想，其原因在于（   ）       

D：What's wrong with you?

P：____

D：____

P：Since last night．

D：Have you had breakfast?

P：No，I don't want to eat anything．

D：____(5 minutes later)

  OK．open your mouth and say“Ah…"

P：Ah… ____

D：Nothing serious．Just a cold．____Have a good rest and drink more water．You'll feel better soon．

P：OK，thank you，doctor．

南半球白昼达到一年中最短的节气是____ ，此时，____ 半球正午太阳高度达到一年中的最大值。