可结合Hb,防止其从肾脏丢失的是
A.清蛋白 B.铜蓝蛋白 C.铁转运蛋白 D.结合珠蛋白 E.α球蛋白
参考答案:D
Mr Zhang finds very hard to travel around the big city.[ ]
A. them
B. its
C. it
D. they're
财产损失保险合同