D．Paying powerline DS| 50.00 a year.

　　C　[细节理解题。根据倒数第二段"Enjoy unlimited free visits and many other benefits by becoming a Family member of the Powerhouse."可知，在成为Powerhouse的会员之后就可以免费参观博物馆了。故选C。]

　　4．What is the main purpose of the text?

　　A．To present schedules.

　　B．To attract visitors.

　　C．To report the performances.

　　D．To teach kids Chinese arts.

　　B　[主旨大意题。文章提供了powerhouse假日休闲的内容，时间，地点，联系方式，价格以及优惠条件等，目的是给游客详细的信息，进而吸引更多的游客。故选B。]

　　B

　　In summer 2007，I joined the British Red Cross at 15.After several days of training，I was attending my first event as a fully qualified (合格的) Red Cross volunteer.Our team was providing medical cover for a large martial arts (武术) grading event.

　　Although I'd passed my first aid course with flying colours，I was nervous before the event began. There's quite a difference between the classroom and the real thing！Two experienced adult volunteers would be working with me for the day.

　　Rosie was taking part in the under­16s event. This was supposed to be non­contact，and she was wearing full protective clothing just in case.All these precautions (预防措施) didn't help however，when her competitor misjudged a move and delivered a violent blow to her head.

　　"Guys，we need some help over here！" Over we went，all three of us carrying various bits of kit (工具箱)．Rosie was lying on the ground.As we approached we could see she was conscious (有意识的)．Brian，my colleague took the lead.

"Hey there，stay nice and still for me.Chris here is just going to hold your