红细胞增多常见于
A．糖尿病
B．严重慢性心肺疾病
C．严重的组织损伤
D．支气管哮喘
E．急性中毒
参考答案：B
She _____ your birthday party, but she had to look after her mother in hospital．
A．should attend
B．ought to have attended
C．can have attended
D．must have attended
足少阳胆经的郄穴是（）
A.梁丘
B.外丘
C.丘墟
D.商丘
E.阳交
