The new biological psychiatry does not deny the contributing role of psychological factors in mental illnesses, but posits that

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问题 The new biological psychiatry does not deny the contributing role of psychological factors in mental illnesses, but posits that these factors may act as a catalyst on existing physiological conditions and ____ such illnesses.

选项 A、disguise
B、impede
C、constrain
D、precipitate
E、consummate

答案D

解析 空格:
- 方程等号:and连接平行结构,act as a catalyst与空格并列,前后同义重复。
- 强词和对应:these factors指代psychological factors,and前说心理因素是催化剂(catalyst),因此catalyst指向空格,根据and取同,体现这些因素“催化”的作用。catalyst的释义是an agent that provokes or speeds significant change or action。disguise伪装,impede阻碍,constrain限制,precipitate加速,consummate使完成。答案选D。
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