单个细胞的动作电位波形不能完全融合的原因是
A.刺激强度不够
B.刺激频率不够
C.存在绝对不应期
D.细胞兴奋性过高
E.离子分布恢复不完全
参考答案:C
以下情况不应浅刺的是:
A.表证
B.身体瘦弱
C.小儿娇嫩之体
D.头面
E.慢性疾病
-How was your day off yesterday?
-Perfect! It was ________ birthday of my grandpa's. We had a big family celebration. [ ]
A. seventy
B. seventieth
C. the seventieth