ICU护士与病人之比为
A．2～3:1
B．1:2～3
C．2:1
D．1:2
E．1:1
参考答案：A
Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
A、hundreds of
B、two hundreds of
C、two hundreds
掌指关节脱位复位后固定的时间是（）。
A.1～2周
B.3周
C.4周
D.5周
E.6周
