根据首写字母和中文提示写出所缺单词补全句意。

小题1:He entered the teachers’ office without p________________(许可).

小题2:B___________(禁止) from using his cell phone, little Jerry had to fix his attention on his subjects.

小题3:Their school’s sports f_____________(设备) are donated by a charity.

小题4:These rescue workers were p_______________(专业的) and saved 100 survivors in total.

小题5:Mr. Li was e___________ (注视) the live talk show with curiosity, forgetting to finish his work.

导电性能好的材料有银、（）、（）。