I wonder ________ Jenny will come this evening.[ ]
A. that
B. what
C. if
D. which
答案:C
下列哪项检查对诊断最有帮助
A.头部CT
B.血维生素B12浓度测定
C.腰穿
D.肌电图
E.腰椎MRI脊髓血管造影
稀酸温度高的原因有哪些?