---Does anyone know __________?  

---I hear that he was born in Sweden.

A．what he is

B．when he was born

C．where he comes from

D．which country is he from

糊剂型藻酸盐印模材料应用时，糊剂与胶结剂的体积比为

A．1：2～1：3

B．3：1～4：1

C．2：1～3：1

D．1：1～2：1

E．4：1～5：1