单选题
Steep stairs can present a particular
hazard
to older people.
【正确答案】
B
【答案解析】[解析] 题干大意:陡峭的楼梯对老年人特别危险。hazard和danger意思相同,表示危险。picture:图片,图画。evidence:证据,迹象。例如:There is no evidence that there will be an earthquake there. 没有迹象表明那个地区会发生地震。case:情况。如:Is that the case?是这样的情况吗?