I _____ to get there before seven tomorrow, so I'll have to get up early. [ ]

A. told

B. have told

C. will tell

D. was told

气相色谱仪的检测器有（）

A.热导检测器

B.质谱检测器

C.电子捕获检测器

D.火焰离子化检测器

E.荧光检测器