—        ?

—Nothing serious, but a bit tired.                

A．Is that all

B．Is there anything else?

C．What’s this

D．What’s the matter with you

¹⁸F-FDG作为肿瘤显像剂的原理是基于

A．多数肿瘤细胞无氧葡萄糖酵解异常旺盛
B．肿瘤细胞膜上葡萄糖转运蛋白对¹⁸F-FDG转运速率相对增快
C．¹⁸F-FDG在肿瘤细胞内经己糖激酶作用转变为6-磷酸-¹⁸F-FDG而滞留在细胞内
D．肿瘤局部¹⁸F-FDG摄取量与肿块内成活的肿瘤细胞数成正比
E．以上都对