The survey results suggest that the largest increase in substance use should be ______. The author is trying to show that _____

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问题 The survey results suggest that the largest increase in substance use should be ______.
The author is trying to show that ______.

选项 A、use of substances may vary from time to time.
B、abuse of certain substances is harmful for health.
C、the attack of September 11th has left incurable harm to people’s mental health.
D、terrorist attack increased anxiety and sense of insecurity among residents.

答案D

解析 文中调查的目的在于揭示9.11事件对人们生活习惯的潜在影响,从而揭示出人们焦虑感和不安全感的增加。
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