Every morning the patients are asked if ________ their temperature taken.   [ ]

A. they had had                  

B. have they had  

C. they have had                

D. had they had

某建设单位拖欠了某施工单位的工程款，关于这笔工程款的说法，下列正确的是( )。

A．是工程建设法律关系主体

B．是工程建设法律关系客体

C．是工程建设法律关系的内容

D．是工程建设法律关系内容中的义务