体内水分缺乏或丧失时,出现()
A.细胞外液渗透压增高
B.产生口渴感
C.增加饮水
D.抗利尿激素分泌增加
E.尿量减少
参考答案:A, B, C, D, E
已知点A的坐标为(-1,4),点B的坐标为(3,1),那么线段AB的长等于______.
The road was so narrow that there would be traffic jams____, especially during the rush hour.
A.every now and then
B.more or less
C.from then on
D.up and down