---Would you like to come and join us in the game?

---           . But I must finish my homework first.

A．I hope so

B．I think so

C．I’d love to

D．I’m very tired.

关于尿路结石预防机制，以下正确的是

A．服维生素B6以增加尿中草酸盐溶解
B．服氧化镁以减少尿中草酸盐排出
C．碱化尿液以利于磷酸盐的溶解
D．患草酸盐结石应多吃菠菜西红柿，多吃高蛋白高糖
E．别嘌呤醇可使尿酸形成减少