维持子宫在正常位置,是由( )
A.子宫4对韧带的作用B.腹腔压力作用C.膀胱和直肠的支撑D.子宫4对韧带及盆底肌肉、筋膜的支托作用E.盆底肌肉及其上下筋膜支撑
参考答案:D
—How are you today?
—____,thank you. [ ]
A. Pretty healthy
B. Very health
C. Pretty well
D. Very much
用语言说出式子a+b2的意义:______.