安全评价相关法律、法规信息，涉及安全生产的法律体系包括（）、法规、规章和安全评价标准。
参考答案：法律
Many people agree that never in history _________a more splendid opening ceremony than that of the Beijing Olympics
A．there were
B．has there been
C．there has been
D．were there
以下何者之外部性可能同时是“消费”亦是“生产”型？（）
A.夜间棒球场强光
B.电梯中放屁
C.台北小巨蛋演唱会音量超分贝
D.摩天大楼兴建中之风沙滚滚
E.全身酒气熏天的夜店咖
