根据提示补全下列教材原句

　　1．Do some research ．

　　如果必要就做一些研究。

　　2． taking part in Turandot?

　　你对参加图兰朵的演出有何感受？

　　3． a real opportunity ．

　　对于我来说，能在剧中扮演角色，真是千载难逢的机会。

　　4． Beijing again.

　　我想再次来北京。

　　【答案】　1.if necessary　2.How did you feel　3.It was；for me to be cast　4.I would like to visit

　　 strike n．罢工；打；击；敲 v．打；击；撞击；敲响；擦燃；罢工

　　(教材P22)Another kind is called percussion instrument, such as the drums and the gong-this kind of instrument is played by striking with the hand or with a stick.

　　另一种被称作打击乐器，比如鼓和锣--这种乐器用手捶或用棍敲。

　　go on strike 举行罢工、罢课

　　be on strike 在罢工

　　strike for/against 为了/为反对......而罢工

　　be struck by 被......咬/打动/迷住/给予深刻印象

　　It strikes sb. that... 使某人忽然想起

　　strike at 打击，敲击

　　①The visitors were struck by the beauty of the West Lake.

　　游客们被西湖的美景迷住了。

　　②It struck me that there was no one at home.

　　我突然想起家中没有人。

③The workers went strike last week to demand job security.