高钾血症的心电图表现不应为
A．QT间期延长
B．出现U波
C．高而尖的T波
D．PR期延长
参考答案：B
______ we think of Ben, we have to admit that he is a highly competent man.
A．However
B．Whether
C．Whichever
D．Whatever
膳食纤维摄入过少易导致（ ）。
A．肥胖症和胆石症
B．便秘和憩室病
C．大肠癌
D．以上都包括
