维生素D缺乏性佝偻病时由于骨样组织堆积而形成方头、肋骨串珠、郝氏沟等体征。()
参考答案:错
请根据问句选择正确的答语。
( ) 1. What time is it?
( ) 2. How old are you?
( ) 3. Happy New Year!
( ) 4. How many apples do you want?
( ) 5. Is this the computer room?
A. No, it isn't.
B. The same to you.
C. I'm 10.
D. It's 9:00 o'clock.
E. Six.
VD的主要生理功能?缺乏症是哪些?