以下哪项不是甲状腺危象的诱发因素()。
A.口服镇静、安眠药
B.应激
C.严重精神创伤
D.合并严重全身性疾病
E.同位素治疗后
参考答案:A
There are a number of methods to provide relief from your toothache, which can’t cure the problem.
A.permanent
B.temporary
C.contemporary
D.consequent
完成下列各题:
(1)已知xm=8,xn=5,求xm-n的值;______;
(2)若3m=6,9n=2,求32m-4n+1的值.______.