体内CO2分压最高的部位是（）。
A.动脉血液
B.毛细血管血液
C.静脉血液
D.组织液
E.细胞内液
参考答案：C
She showed the visitors around the museum，the construction _______ had taken more than three years.[ ]
A．for which
B．with which
C．of which
D．to which
不论索引是否生效，定位到相同记录上的命令是
A．GOTOP
B．GO BOTTOM
C．SKIP
D．GO 5
