I think the director's attitude___ this program will decide what we should do next. [ ]

A. for

B. of

C. at

D. towards

怀疑Bruton型丙种球蛋白缺陷症的患者，应作哪项检查（）

A.T细胞亚群检测

B.E花环试验

C.免疫球蛋白检测

D.淋巴细胞转化试验

E.细胞毒试验