如果a，b，c表示三个有理数，且它们满足条件：|a|=3，|b|=5，|c|=7，a＞b＞c．那么式子a+b-c的值为______．

It’s generally agreed that women and children can be _______ easily and therefore

they should learn more to protect themselves in life.

A．taken up

B．taken in

C．taken off

D．taken on