∵4x-16≥0，∴4x≥16，
∴x≥2，
故答案为：[2，+∞）．
The boys drank _____ milk, which made them uncomfortable. [ ]
A. a great many
B. a large amount of
C. much too
D. a large number of
诊断气管异物最主要的依据（）
A.异物吸入史
B.咳嗽
C.呼吸困难
D.肺部听诊
E.X线表现
