幽门梗阻引起反复呕吐，最可能引起
A．低氯高钾碱中毒B．高钾酸中毒C．高氯低钾酸中毒D．低氯低钾碱中毒E．低氯高钠碱中毒
参考答案：D
There was such a long queue for coffee at the interval that we ____ gave up. [ ]
A. eventually
B. unfortunately
C. generously
D. purposely
下列现象用热传递的方式改变物体内能的是（ ）
A．反复弯折，铁丝发热
B．按下电火花的按钮，塑料盒的盖子飞了出去
C．在太阳照射下，热水器中的水温上升
D．迅速压下活塞，棉花着火燃烧
