与图形或客体的轮廓或运动感知有关的视觉皮层区是（）
A.枕叶V1区
B.枕叶V2区
C.枕叶V3区
D.枕叶V4区
参考答案：B
—Mr. Li ______ to Mary carefully when I entered the classroom this morning.
—He is very patient ______ he is young.
A．talking; but
B．was talking; though
C．talks; though
D．talked; however
下列图片为病人的骨髓涂片，该患者血常规WBC1.2×10/L，RBC1.32×10/L，Hb50g/L，PLT23×10/L，网织红细胞0.4%最可能的诊断是()
A．再生障碍性贫血
B．骨髓增生异常综合征
C．阵发性睡眠性血红蛋白尿
D．急性白血病
E．溶血性贫血
