---Life is full of opportunities for you.

---That’s right. _____.

A．It’s my cup of tea

B．I have butterflies in my stomach

C．It will cost an arm and a leg

D．The world is my oyster

下列哪项不是五迟五软的发病原因( )

A．喂养失调

B．家族遗传

C．分娩时难产产伤

D．父母精血虚损

E．孕母用药不当