中枢神经系统白血病最常见于
A.急性粒细胞白血病
B.急性淋巴细胞白血病
C.急性单核细胞白血病
D.急性早幼粒细胞白血病
E.慢性粒细胞白血病
参考答案:B
Sandra likes eggs. She has ______ every day. [ ]
A. them
B. it
C. their
D. him
腰椎椎弓峡部断裂,正确的摄影体位是()
A.腰椎正位
B.腰椎侧位
C.腰椎双斜位
D.胸腰段斜位
E.胸腰段侧位