It is reported that China will not buy the Euro debt until some thorough research ______.

A．will be done

B．had been done

C．has been done

D．will have been done

在国际法院受理的案件中，如法院有属于一方当事国国籍的法官，则他方当事国也有权选派一名法官参与审理，此种法官称______。

A．任选法定

B．束国法官

C．专案法官

D．聘任法官