解释下列句中划线的文言字词。
①然后知松柏之后凋也____ ②比至陈,车六七百乘 ____
③但当涉猎,见往事耳____ ④乃不知有汉,无论魏晋____
You'd better ask a ______, such as your aunt or sister, to look after your children while you are away.
把2016转化为二进制数为____
计算:(﹣16+34﹣512)×24.
下列说法错误的是( )