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29.What does paragraph 3 mainly talk about concerning MacRebur's product?A.Its materials.B.Its production procedures.C.Its advantages.D.Its potential applications.30.What is McCartney's attitude to the enhanced roads'environmental cost?A.Reserved.B.Unworried.C Concerned.D.Uncertain.31.What is the best title for the text?A.Plastics can save the planetB.Makeshift roads will be the normC.Engineer invents new plastic that lasts longerD.Waste plastics could build the roads of futureDStanding outside my hospital the other day,I was struck by a sight.In fact,it's a sightwe've all scen countless times:obese (nurs standing around outside a hospital.It isestimated that one in four nurses is obese,with nearly two-thirds being overweight.While some have argued that obese nurses may be less productive and take more time offsick,this isn't my concern at all.I'm just worried about the example they set to others.Yes,ofcourse,nurses and doctors struggle with having a healthy lifestyle like everyone else.But if theycan't stick to the basic principles of maintaining a healthy lifestyle that they are promotingthemselves,then in my opinion they have no business being on the front line.No patient isgoing to take them seriously unless they can demonstrate that they at least try to practise wharthey promote.It's a serious professional failing,because it sends the disastrous message of "do as I saynot as I do",which is never going to result in someone changing their ways.You wouldn't takeadvice about reducing your drinking from an alcoholic,would you?So why should you beexpected to listen to an overweight healthcare professional who is telling you to lose a fewpounds?Of course,there are lots of instances when a doctor or nurse's personal struggles can reallyhelp.For example,I used to smoke and I find this actually helps me because I can relate topatients-I know their struggles,I know their concerns and I know the things they say tothemselves to avoid quitting.Knowing that I used to smoke helps me come across as morehuman to my patients-I've done silly things but I've changed and so can they.Similarly,a nurse who was previously obese but has now lost weight could be a realmotivation for patients.But until they have lost weight and can demonstrate that they practisewhat they promote,they risk alienating (the very patients they are charged with·1北10页)▣▣Q夸克扫描王极速扫描，就是高效可B