平时看到的手背上的一条条的青筋，这是（  ）

按要求变化下列各句
(1)Lisa was on duty yesterday afternoon. （对划线部分提问）
____  was on duty yesterday afternoon?
(2) The students had a piano lesson last Monday. （改为否定句）
The students ____  a piano lesson last Monday.
(3) Claudia was at the culture club this morning. （改为一般疑问句）
____ at the culture club this morning?
(4) It’s Friday today. （对划线部分提问）
____  is it today?
(5)They were at the office yesterday. （对划线部分提问）
____  they yesterday?

顾炎武在《日知录·周室班爵禄》中写到：“为民而立之君，故班爵之意，天子与公、侯、伯、子、男一也，而非绝世之贵……故班禄之意，君、卿、大夫、士与庶人在官一也，而非无事之食。”这一主张（    ）