患者因低热、出汗、消瘦、左上腹坠痛等表现,经检查诊断为慢性粒细胞白血病,其主要体征是()
A.胸骨压痛
B.肝肿大
C.脾肿大
D.淋巴结肿大
E.颈强直
参考答案:C
For many Chinese students, they can't understand _______ English. [ ]
A. speak
B. speaking
C. spoken
D. be speak
ABO血型遗传中,父母双方各遗传给子代一个基因,可以组成基因型的数目为()
A.3
B.4
C.5
D.6
E.7