成年人脑脊液总量为（）
A.80～100ml
B.110～200ml
C.180～300ml
D.280～400ml
E.400～600ml
参考答案：B
读句子，用数字排顺序。
( ) I go to school at 7: 30 in the morning.
( ) I brush my teeth, wash my face and then eat breakfast.
( ) I put on my shirt, pants and socks.
( ) After supper, I watch TV.
( ) I walk home.
消化性溃疡患者出现全腹压痛、反跳痛及板样强直，表明有（）。
A.食管静脉破裂
B.癌变
C.穿孔
D.幽门梗阻
E.出血
