All over the world the mobile phone has leaped from being an impossible luxury in the early 1980s to

_____ most people would now call a necessity.[ ]

A. which

B. that

C. what

D. when

影响颅内肿瘤引起精神症状的因素不包括（）

A.性别、年龄、病程

B.肿瘤的部位

C.缓慢生长的肿瘤不会引起精神症状

D.颅内肿瘤引起的精神症状也可能与遗传有关

E.性格特征、个体素质、精神创伤也可诱发一些颅内肿瘤患者引起精神症状