---She’s seldom asked to do housework at home,        she?

---      . Her parents are very busy with their work, so she has to do the laundry every day.

A．has; Yes

B．hasn’t; No

C．is; Yes

D．isn’t; No

鸡蛋中干扰铁吸收的成分是（）。

A.抗生物素

B.抗胰蛋白酶

C.卵黄高磷蛋白

D.磷脂

E.胆固醇