患儿，男，5个月。人工喂养，未加辅食，冬季出生，很少户外活动，平时多汗、易惊、睡眠不安，近3日来低热、咳嗽，今晨突发双眼凝视，手足抽搐。查体：枕后有乒乓球感。导致该患儿抽搐的直接原因是
A. 维生素D中毒
B. 维生素D过量
C. 维生素D缺乏
D. 血钙降低
E. 血钙升高
查看答案
Ben Mathews found it very easy to make the plans for the trip.
The group took six weeks to travel from Landon to Kyoto and back again.
The Climate Train travelers liked working with the other people on the train.
The Chinese border police gave them fruit and vegetables.
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