引起嗜酸性粒细胞数量减少的疾病是
A．脾切除后
B．X线照射后
C．应用肾上腺皮质激素后
D．淋巴网状细胞肉瘤
E．寄生虫病
参考答案：C
5. “Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”
A．after
B．unless
C．until
D．when
由于器质性病变致肠腔变小，使肠内容物通过发生障碍，称为
A．动力性肠梗阻B．血运性肠梗阻C．机械性肠梗阻D．不完全性肠梗阻E．绞窄性肠梗阻
