第三世界国家对外关系的基本原则是__________和 ______________ 。

美国总统是世界上权力最大的总统之一，其职权包括___________。

Many boys enjoy _______ football, basketball or baseball

Which do you think is ________, health or wealth？

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

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

Which do you think is _________________important, health or wealth?

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

科学的目的是______世界，技术的目的是______世界。（　　）

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

科学的目的是______世界，技术的目的是______世界。

1990年，美国麻省理工学院斯隆管理学院的彼得·圣吉教授出版了一本享誉世界之作，引起世界管理界的轰动，这就是________。