______ nobody was very enthusiastic about it, they decided to cancel the trip.

A．See that

B．Seeing that

C．So

D．When

HLA细胞学分型方法属于（）

A.细胞毒性试验

B.细胞增殖试验

C.细胞凋亡试验

D.细胞形态观察

E.细胞溶解试验