适用于红细胞沉降率测定的抗凝剂为
A．肝素B．枸橼酸钠C．EDTA-K2D．草酸铵E．双草酸盐
参考答案：B
How many years is it ______ your family moved here?
A．after
B．since
C．before
D．until
南方地区地处我国温度带的[ ]
A．热带
B．暖温带
C．亚热带
D．中温带
