幼儿期年龄的划分应是()
A.出生到1岁
B.出生到2岁
C.1岁到3岁
D.1岁到4岁
E.2岁到4岁
参考答案:C
解析:幼儿期:1周岁至满3周岁之前。
There is no bus at this time every night. You ____ walk home.[ ]
A. must
B. have to
C. can
D. need
胆囊炎穿孔的典型表现是()
A.胆囊肿大,轮廓模糊
B.胆囊壁弥漫增厚,形成"双边影"表现
C.颈部结石嵌顿
D.探头压迫胆囊区疼痛明显
E.胆囊壁局部缺损,胆囊周围局限积液