分泌生长抑素的是
A．"铅管"征B．"鹅卵石"征C．"鸟嘴"征D．"杯口"征E．充盈缺损
参考答案：D
There is rice in the room, [ ]
A. much too
B. many too
C. too many
D. too much
B．a与F成反比
C．a随着F的增大而增大 通过对生活经验的分析，你可以猜想，
D．a随着F的增大而减小
