Stressful environments lead to unhealthy behaviors such as poor eating habits, which ______increase the risk of heart disease.

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问题 Stressful environments lead to unhealthy behaviors such as poor eating habits, which ______increase the risk of heart disease.

选项 A、in turn
B、in return
C、by chance
D、by turns

答案A

解析 本题考查词组辨析。in turn,转而,依次,而又;in return,作为报答;by chance(=by accident),偶然地,无意中: by turns,轮流地,依次。根据句意应选in turn。
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