妊娠合并心脏病最常见的是()
A.风湿性心脏病
B.先天性心脏病
C.冠心病
D.肺源性心脏病
E.主动脉关闭不全
参考答案：B
Though________money, his parents managed to send him to university.
A．lacked
B．lacking of
C．lacking
D．lacked in
关子贫血的概念主要是指外周血液中单位容积内
A．红细胞数低于正常最低值B．血红蛋白量低于正常最低值C．红细胞比容低于正常最低值D．网织红细胞计数低于正常最低值E．骨髓造血细胞生成减少
