佝偻病诊断要点中,常有维生素及钙的缺乏史。维生素缺乏主要指缺乏维生素()
A.A
B.B
C.C
D.D
E.E
参考答案:D
解析:维生素D缺乏是导致佝偻病的主要原因。
卷烟品牌培育工作包括哪些?
----we’ve spent too much money recently.
----well, it isn’t surprising. Our friends and relatives______around all the time
A.are coming
B.had come
C.were coming
D.have been coming