患儿8个月,单纯奶粉喂养,未添加辅食,近2个月面色苍黄,表情呆滞,唇,舌及肢体有震颤,最可能是
A.缺铁
B.缺钙
C.缺维生素D
D.维生素B12缺乏
E.婴儿痉挛症
参考答案:D
深圳证券交易所规定,上市公司配股需缴付一定费用,但( )免收费用。
A.职工股
B.国有股
C.法人股
D.高级管理人员持股
Though he had failed twice, the strong-willed boy decided to make a third attempt_________ it. [ ]
A.to
B.on
C.at
D.B &C