硫化促进剂中，被禁用于食具的是（）
A.氧化锌
B.氧化镁
C.氧化钙
D.氧化铅
E.氧化铜
参考答案：D
拇指再造术的基本要求是什么?
You didn't let me drive. If we________ in turn, you__________so tired. [ ]
A. drove; didn't get
B. drove; wouldn't got
C. were driving; wouldn't get
D. had driven; wouldn't have got.
