如图所示的电阻箱的示数是______Ω．
电阻箱的示数：R=2×1000Ω+0×100Ω+1×10Ω+0×1Ω=2010Ω．
故答案为：2010．
________， I can see that those terrible events shaped me into the person I am today.[ ]
A．Having looked back
B．Looking back
C．Being looking back
D．To be looking back
下列肿瘤标志物中，脏器特异性最高的是（）。
A.SA
B.PSA
C.CEA
D.CA125
E.CA15-3
