问题补充:
单选题Stressfulenvironmentsleadtounhealthybehaviorssuchaspooreatinghabits,which_______increasetheriskofheartdisease.A.in turnB.in returnC.by chanceD.by turns
答案:
A解析考查介词。介词短语in turn的意思是“依次,反过来”,符合语境;in return的意思是“作为……的回报”,by chance“偶然”;by turns “轮流地,逐个地”。