定量测定血清IgE选用哪种方法最好()
A.免疫电泳
B.免疫单扩散
C.乳胶凝集试验
D.ELISA
E.间接血凝试验
参考答案:D
— Do you often go to the movies at weekends?
— Not often, I only go to the cinema __________.
A.at one time
B.for a time
C.at a time
D.from time to time
1岁小儿正常的体格发育指标,以下哪项是错误的
A.体重9kgB.身长75cmC.出牙8颗D.腕部骨化中心2个E.头围48cm