Which do you think is ________, health or wealth？

_______________will not continue if an ongoing operation is changed or deletedA、

数据库系统(DBS)是由___、___、___和___四部分组成。

化油器式燃油供给系统主要由然油箱、___、___、化油器和供油管道等组成。

内毒素是由_______、_______和_______组成。

29．__________ when you are on the bus or bike．

本题那项不能满足消防对天然水源的要求：_____

任何社会组织都是由_________、_________、__________组成的系统，任何管理都是对系统的管理。

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

视网膜是由________层和________层组成。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.