下面各方中（）有资格直接变更受益人。
A.投保人
B.保险人
C.被保险人
D.受益人自己
参考答案：C
我国处理对外关系的基本准则是[ ]
A．和平共处五项原则
B．非歧视性原则
C．最惠国待遇原则
D．自力更生原则
Which statement about renewable and non-renewable resources is most accurate（）
A. The price of a renewable resource is the present value of its expected next-period price.
B. Land is considered a renewable resource.
C. The known stock of a non-renewable resource must decrease as the resource is used.
