国家主权平等原则
参考答案：是指主权国家在国际法律关系中地位完全平等，相互无管辖和支配的权利。他们平等的承受国际法上的权利和义务，平等的承担国际法律责任。
Let's ____ a birthday card for our mother.[ ]
A. make
B. making
C. make
Astronaut as he was, he didn’t know _______ he had to _______ in outer space.
A．how; deal with
B．what; deal with
C．how; do with
D．what; be done with
