急性白血病贫血的主要原因()
A.出血
B.无效性细胞生成
C.红细胞寿命缩短
D.红细胞成熟受干扰
E.造血原料缺乏
参考答案:D
While driving into the city, he didn't notice the road sign that _____ “ Turn left.” [ ]
A. read
B. was read
C. reads
D. is read
指挥部下设()后勤组及其他作战保障人员。
A.作战组
B、供水组
C、宣传组
D、调度组
E、通信组