卫生资源分配的最基本的伦理道德准则是（）
A.公平公正原则
B.生命价值原则
C.优先原则
D.效益原则
E.不伤害原则
参考答案：A
传染性非典型肺炎（SARS）应采取（）
A.接触隔离
B.严密隔离
C.保护性隔离
D.呼吸道隔离
E.血液-体液隔离
--Where have you _______ all day?
--- I came back at noon and I _______ in this office since then.
A．been in; had been
B．been in; was
C．been; have been
D．been; am
