Steep stairs can present a particular hazard to old people.A:pictureB:dangerC:evidenceD:case
Steep stairs can present a particular hazard to old people.
A:picture
B:danger
C:evidence
D:case
B:danger
C:evidence
D:case
参考解析
解析：陡峭的楼梯对老年人特别危险。hazard和danger意思相近，都表示危险。picture：图片 图画；evidence：证据，迹象；case：情况。
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