葡萄胎清宫术前备用物品中不需要的项目是（）。
A.配血备用
B.催产素
C.雌激素制剂
D.抢救药品及物品
E.大号吸管
参考答案：C
---___________ everyone present at the meeting? ---No, all but one _________ there.
A．Was; was
B．Were; were
C．Was; were
D．Were; was
保护思想的表达与变现而不保护思想本身的著作权法的基本原则。
