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of a stroke
　　D.Breakthroughs in treatment
　　E.Risk factors of stroke
　　F.Warning signs of a stroke
　　27.When a stroke occurs,the arteries leading to ______and within the brain.
　　28.A person’s vision is likely to be affected if a stroke______.
　　29.Some people can reduce their risk of stroke if they______.
　　30.New treatments are now available to people who______.
　　A.suffer from a stroke
　　B.will be affected
　　C.change their lifestyles
　　D.will take place
　　E.occurs at the back of his/her brain
　　F.controls various body functions
第4部分：阅读理解(第31~45题，每题3分，共45分)
　　下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
　　第一篇Wayne Beno
　　Wayne Beno was a true outdoorsman.Fishing,boating,hunting,walking through the woods with his three dogs,Wayne loved and did it all.Then life changed dramatically.Wayne was diagnosed with Parkinson’s disease(帕金森氏病).
　　“For the next thirteen years I took 28 pills a day,had horrible side effects,and even with all those pills I still had lots of shaking and tremors(颤抖).I only went out during peak times,when I was looking and feeling my best.But that wasn’t often and I really couldn’t do much of anything.I felt like the life I loved was over,”said Wayne.
　　Then Wayne’s doctor in Green Bay suggested he consider a breakthrough surgical option being offered at Froedtert & the Medical College of Wisconsin called Deep Brain Stimulation(刺激)(DBS).DBS is a surgical option used to treat disabling movement disorders related to Parkinson’s disease,essential tremor and more.It is not a cure,but significant improvement is seen in most movement disorder cases,with relatively low risk to the patient.
　　In addition to his doctor’s recommendation,Wayne had a neighbor and fishing friend who had the DBS procedure at Froedtert & the Medical College of Wisconsin.His friend’s experience convinced Wayne that the 180-mile trip from his home in Crivitz,Wisconsin could be well worth the effort.
　　And was it ever.
　　“It was the best thing I ever did.I’m down to zero pills a day and I don’t shake at all,”reports Wayne.“Before the surgery,I felt bad every single day.Now I feel like my old self.I’m back to business as usual,which for me means fishing,fishing,and more fishing,every day of the year.Things just couldn’t be any better!”
　　31.Before getting Parkinson’s disease,Wayne loved
　　A.social activities.
　　B.outdoor activities.
　　C.productive activities.
　　D.quiet activities.
　　32.What was true of the pills Wayne took for 13 years?
　　A.They cured his disease.
　　B.They produced terrible side effects.
　　C.They stopped his shaking and tremors.
　　D.They enabled him to go out as often as before.
　　33.Deep Brain Stimulation is most effective for
　　A.mental disorders.
　　B.chronic diseases.
　　C.permanent brain injuries.
　　D.disabling movement disorders.
　　34.Wayne had a neighbor and fishing friend who
　　A.worked as a doctor.
　　B.was against the DBS procedure.
　　C.benefited from the DBS procedure.
　　D.was a victim of the DBS procedure.
　　35.After the surgery,Wayne felt
　　A.completely recovered.
　　B.bad every single day.
　　C.pain every now and then.
　　D.worse than before the surgery.
　　第二篇Study Says Dogs Can Smell Cancer
　　Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal