关于男性红细胞数量的叙述,错误的是()
A.6~7岁时最低
B.新生儿最高
C.25~30岁达高峰
D.30岁后逐渐下降
E.60岁以后不再下降
参考答案:E
He was in hospital for six months. He felt as if he was _______ from the outside world.
A.cutout
B.cutoff
C.cutup
D.cutthrough
鼓膜内陷特征的是()
A.光锥缩短,变形
B.锤骨柄向后上移位
C.锤骨短突明显外突
D.前后皱襞夹角变大
E.光锥消失