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 这是一个涉及惯用法的试题。in turn有两个意思: “轮流,反过来”,如:Welooked after the children in turn. “我们轮流照看孩子。”Theory is based on practiceand in turn serves practice.“理论基于实践,并反过来为实践服务。”B项中in return作“报答,回报”讲,通常后面与介词for连用,如:I wish I could do something inreturn for your kindness.“但愿我能做些什么以报答你的好意。”C项中by chance作“偶然地”讲,如:I came across this old photo in the drawer by chance.“我偶然在抽屉里看到了这张旧照片。”D项中by turns作“轮流,交替”讲,如:She laughed andcried by turns.“她一会儿笑一会儿哭。”按照本句意思,只有in turn合适。
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