Passage one

? ? ? 46. 正確選項C。Interactive television advertising is successful when incorporated into situation comedies.
　　47. 正確選項C。Somewhat doubtful.
　　48. 正確選項C。It has placed TV advertising at a great disadvantage.
　　49. 正確選項B。It has done well in engaging the viewers.
　　50. 正確選項A。They may be due to the novel way of advertising.


Passage Two
　　51. 正確選項B。Insufficient demand.
　　52. 正確選項D。Groundless.
　　53. 正確選項A。The booming defense industry.
　　54. 正確選項A。Powerful opposition to government’s stimulus efforts.
　　55. 正確選項C。To show the urgent need for the government to take action.