All people, whether they be rich or poor, strong or weak, privileged or deprived，are interdependent, and _______ the common task of seeking to achieve mankinds full potential

Many boys enjoy _______ football, basketball or baseball

1_____there is no rain,farming is difficult or impossible

1_____education is the instruction that occurs when the instructor and students are separated by distance or time,or both

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

在关系数据库设计中，设计关系模式属于数据库设计的________。

关于数据仓库设计，下述说法正确是______。

Which do you think is _________________important, health or wealth?

网络拓扑设计的优劣将直接影响着网络的性能、可靠性与________。

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

在软件设计中，不属于过程设计工具的是______ 。

在软件设计中，不属于过程设计工具的是 ______。