A:0.6826
B:0.3413
C:0.4603
D:0.9207
At the beginning of the 20th century, many people thought that the family was falling apart—__________, they thought it was dying. ( )
西周时,公、卿、大夫、士等爵号,是贵族权势的等级符号,拥有爵级者,构成了一个高贵的阶层。秦汉时期,平民能够以军功得爵,军功爵在秦与汉初造就了一个军功地主阶层。这一变化说明( )