在1810-1826年的西属拉丁美洲独立战争中，下列( )未获得独立。

单项选择题Those who were left alone in the cave knew better than the others ______sounds bats flying about in the dark made.A．that frighteningB．which frighteningC．what frighteningD．how frightening

单项选择题不签订劳动合同的企业须每月向劳动者支付( )倍工资。