汉初统治者对人民采取轻徭薄赋政策的客观原因是（ ）
A：吸取秦亡的教训
B：当时经济困难
C：重视“以德化民”
D：当时人心思安
下列名言、诗句寓意与“中华传统美德”相一致的有（ ）
①谁言寸草心,报得三春晖 孝敬父母
②君子一言,驷马难追 诚实守信
③读书百遍,其义自见 宽宏大量
④天下兴亡,匹夫有责 热爱祖国
The crocodile is very dangerous but we can't harm it, because it belongs to the ____(danger) species and is facing up to dying out and needs protection.
