六级And, apparently, that day has come because seemingly routine operations such as knee replacements are now much more hazardous due to the looming threat of these infections.

而且，很显然，这一天的到来是因为，由于这些感染的威胁迫在眉睫，膝关节置换等看似例行的手术现在变得更加危险。

2017年6月听力原文

高考To avoid knee pain, you can run on soft surfaces, do exercises to strengthen your leg muscles, avoid hills and get good running shoes.

为了避免膝盖疼痛，你可以在柔软的地面上跑步，做一些锻炼来加强腿部肌肉，避开丘陵，穿上好的跑鞋。

2018年高考英语全国卷I 语法填空 原文

高考With great care she began the dangerous crossing, sometimes on her hands and knees, hardly daring to look down between the sleepers into the wild flood waters below.

她小心翼翼地开始了危险的穿越，有时用手和膝盖，几乎不敢从两个熟睡者中间俯视下面的洪水。

2016年高考英语浙江卷（10月） 阅读理解 阅读A 原文

四级Worst of all, when her son, Ned, fell and injured his knee, she refused to pay for a doctor and spent hours looking for free medical help.

最糟糕的是，当她的儿子内德摔倒并伤到膝盖时，她拒绝支付医生的费用，并花了数小时寻找免费的医疗帮助。

2014年6月听力原文

六级Men, these days, are embracing fatherhood with the round-the-clock involvement their partners have always dreamed of — handling night feedings, packing lunches and bandaging knees.

如今，男人们正以伴侣梦寐以求的全天候参与方式拥抱父亲的身份——处理夜间喂食、打包午餐和包扎膝盖。

2007年12月英语六级真题

四级Since money is known to be one of the things most likely to bring a relationship to its knees, we should be grateful.

既然金钱是最有可能让一段关系陷入困境的东西之一，我们应该心存感激。

2011年12月英语四级考试真题