阴虚火旺也可致齿衄,其证候特点是
A.齿衄血色鲜红
B.齿龈脓血外溢
C.齿衄血色晦暗,污秽不堪
D.齿衄出血量多,牙龈红肿
E.齿衄血色淡红,烦劳则发,齿摇不坚
参考答案:E
John's uncle insisted _____ in this hotel any longer. [ ]
A. not staying
B. not to stay
C. that he not stay
D. staying not
水谷精微化生血液的过程与心肺的作用有关。