Passage one

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

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