99.（单选题）A large percentage of e-commerce business went bankrupt in 2000, mostly due to inadequate business plans and excessive spending on advertising and marketing.

29.（填空题）The book raised a storm of ____________（controversy）.

28.（填空题）These devices allow the robot to have dynamic _____（interact）with its environment.

27.（填空题）The population of the town saw rapid ____________（expanse）in the 1960s.

26.（填空题）Experts believe that the increasing rate of death is ______（associate）with driving cars.

25.（填空题）The man ______（flee）to the mountain to avoid the conscription（征兵）.

24.（填空题）Vocational education aims at _____ （build）up students’ practical skills.

23.（填空题）The girls ______ （dress）up as movie characters in this exciting festival.

22.（填空题）Keep your sales receipt and the original ______（package）.

21.（填空题）Team members will be selected according to a number of strict ______ （criterion）.

20.（填空题）The firm is in a ______ （potential）dangeroussituation.