诊断溶血性贫血最可靠的指标是（）
A.网织红细胞明显增高
B.尿胆原排泄增加
C.尿含铁血黄素阳性
D.血清结合珠蛋白降低
E.红细胞寿命缩短
参考答案：E
When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.
A．that, one
B．/, the one
C．that, it
D．/, it
哪些费用是随着水平垂高增大而增大，哪些费用是随着水平垂高增大而减少？
