C．knocked over a warning sign

　　D．was knocked down by the crowd

　　解析：选B　细节理解题。根据第一段中的"Ms. Brown got to the area, the sign was lying on the floor ...Her foot got caught in the sign, in a bad way, and she fell."可知，布朗夫人被"小心地滑"的指示牌绊倒了。B项中的tripped over意为"被绊倒"，与文章表述相符，故选B项。C项中的knocked over意为"打翻；撞倒"；slipped on意为"滑动的"；knocked down意为"击倒"。不符合文意。

　　6．AMC mentioned the 1998 case in order to ________.

　　A．accept its legal liability for Ms. Brown's loss

　　B．prove Ms. Brown had some physical problems

　　C．stress that it had no legal liability for the accident

　　D．prove other customers were responsible for the accident

　　解析：选C　推理判断题。根据第二段第一句"AMC argued that ... encourage the use by not allowing Brown's case to proceed (继续进行)．"可知，AMC影院认为布朗夫人的控诉不成立，法院应该鼓励使用这样的警示牌，接着第二句AMC影院举出1998年的案例来支持自己的观点。由此可推测，AMC影院提到这一案例是为了强调自己不应该承担本次事故的责任。故选C项。

　　7．What can we learn about the Brown's case from the last paragraph?

　　A．It would be judged by jury.

　　B．It would not be allowed to proceed.

　　C．The court would rule in favor of AMC.

　　D．The court accepted all the arguments of the Browns.

　　解析：选A　细节理解题。根据文章最后一段中的"But it did conclude that Brown's case could continue to a jury (陪审团)"可知，法院提请陪审团来审理此案。故选A项。

　　8．The underlined word "one" in the last paragraph refers to "________"．

　　A．danger　　　　　　　　 B．customer

　　C．business owner D．equipment in public places

解析：选A　代词指代题。根据最后一段最后一句可知，一个商人选择和使用某一种设备来警示顾客某种危险，而这种设备本身就可能将顾客置于另一种危险中。由此可猜测，on