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