治疗无排卵型功血肾阴虚型应首选
A．右归丸合理中丸B．右归丸C．左归丸合二至丸D．归肾丸E．六味地黄丸
参考答案：C
—How much did your new computer ________ you?
—Five thousand yuan.[ ]
A. cost
B. take
C. spend
D. pay
无机锌与有机锌比较( )。
A．无机锌毒性大
B．有机锌毒性大
C．毒性一样大
D．毒性大小不确定
