A To examine(检查) their patients heart function(功能) carefully(仔细地).
B To have their patients chests X-rayed(让...被拍摄X 光) regularly(定期地).
C To select(挑选) volunteers (志愿者)from their patients(病人) for a kidney screening(透视).
D To start(开始) rigorously(严格地) checking out (检查)their patients kidneys(肾).
4.D. 利用问题句中的特征结构(Archives of Internal Medicine)作为答案线索， 在文章中查找答案相关句：
Chronic kidney disease， or CKD， is a quiet epidemic， many of the 19 million Americans estimated to have it don’t know they do. The kidneys lose their ability to filter waste out of the bloodstream so slowly that symptoms aren’t obvious until the organs are very damaged.(第3题答案相关句) End-stage kidney failure is rising fast， with 400，000 people requiring dialysis or transplant to survive， a toll that has doubled in each of the last two decades.
And while CKD patients often are terrified of having to go on dialysis， the hard truth is that most will die of heart disease before their kidney disintegrate to that point， something kidney specialists have recognized for several years but isn’t widely known. Indeed(的确，确实)， the new research(研究) is highlighted (使突出)in this months Archives of Internal Medicine with a call for (要求)doctors who care for heart patients to start rigorously (严格地)checking out (检查)the kidneys， and for better care of (照顾， 检查)early(早期的) kidney disease(疾病 ).
第4段最后一句说“《内科档案》杂志号召为心脏病人治病的医生要开始严格地检查病人的肾”，因此D是答案。
5. Which of the following is NOT one of the three markers(标志) of kidney function(功能)?
A Levels(水平， 含量) of the protein(蛋白质) albumin(白蛋白) in the urine(尿).
B Levels of the white blood cells(白细胞) in the blood(血液).
C The rate(比率) at which kidneys filter(渗透) blood.
D. whether (是否)one is anemic(贫血的) or not
5.B. 利用问题句中出现的涉及到数字的细节信息结构(three markers of kidney function)作为答案线索， 同时关注备选项中的词语/结构是否在答案线索结构所在的语句中， 或答案线索结构所在的周边的语句中出现了：
And while CKD patients often are terrified of having to go on dialysis， the hard truth is that most will die of heart disease before their kidney disintegrate to that point， something kidney specialists have recognized for several years but isn’t widely known.(第4题答案相关句) Indeed， the new research is highlighted in this months Archives of Internal Medicine with a call for doctors who care for heart patients to start rigorously checking out the kidneys， and for better care of early kidney disease.
The link sounds logical. After all ， high blood pressure and diabetes are chief risk factors both chronic kidney disease and heart attacks. But the link goes beyond those risk factors， stresses McCullough; Once the kidneys begin to fail， something in turn accelerates disease， not just in the obviously sick or very old， but at what he calls "a shockingly age. " McCullough and colleagues tracked more than 37， 000 relatively young people -rage age 53 - who volunteered for a kidney screening. Three markers of kidney function were checked(检查): The rate at which kidneys filter(渗透) blood， called (被称为...的)the GFR or glomerular filtration rate" t; levels(含量) of the protein albumin (白蛋白)in the urine; and if they were anemic(贫血的). They also were asked about previously diagnosed heart disease.
The odds of having heart disease rose steadily as each of the striking markers were worsened. More striking was the death data. At this age， few deaths are people died during the study period. But those who had both CKD and known heart disease had a threefold increased risk of death in a mere 2 1/2 years， mostly from heart problems. “This study is very much a wake-up call，” McCullough says.
根据文章倒数第2段中第2句可以直接判定答案。 只有选项B没有出现在该句中。