读5005000时只读出两个零______.
5005000读作:五百万五千;
故答案为:×
I have nothing __________ because Tom has _________ my lunch.
A.to eat; eaten
B.eating; eaten
C.eat; ate
D.to eat; ate
关于骨巨细胞瘤,错误的是()。
A.常侵犯骨端
B.内可有骨嵴形成的分房
C.骨破坏呈偏侧性
D.肿瘤内常有钙化,有骨膜增生
E.肿瘤一般不穿破软骨