题目

---Would you like to go for an outing with us? ---      ，for I have something important to do.     A．I will    B．I’d love to    C．I don’t know  D．I’d rather not 答案：D一位失血患者经医生检查，在他的红细胞中，A、B两种凝集原都没有，那么这个患者的血型为A.A型B.B型C.O型D.AB型