Thereistheappreciationofthesalienthistoricaltruth________theagingofadvancedsocietieshasbeenasuddenchange
C
本句中 that 引导的也是同位语从句。
Ifanearthquakeoccurred，someoftheone-storeyhouses________.
_______isknowntoall，Chinawillbean_______powerfulcountryin20or30years’time.