Speaker A: Fairly mild for the time of year. Speaker B:______

A．Which season is it now

B．Yes, usually it is very mild at this time of the year.

C．Have you ever had this kind of weather before

D．Yes. Quite different from the forecast.

中性粒细胞碱性磷酸酶积分减低常见于哪种疾病( )

A．真性红细胞增多症
B．慢性粒细胞白血病
C．骨髓纤维化
D．再生障碍性贫血
E．化脓性链菌感染