Like millions of other Americans, I come from a family with a history of the heart disease. My father had his first three heart attacks when he was only thirty-one. I was three years old at that time. I grew up with heart disease. It was there, but I didn't take it seriously.
When I was thirty-one, my blood cholesterol（胆固醇)level was measured for the first time. It was 311 mg/dl, the doctor told me an extremely high level that put me at a very high risk of heart disease, especially with my family history. He sent me to the National Institutes of Health（NIH)to be screened for participation in a clinical trial. The trial was designed to test the effect of lowering blood cholesterol on the risk of heart disease.
At NIH, physicians explained the degree of risk associated with my blood cholesterol level and the nature of the experiment. This test involves putting a tube through a leg artery（动脉) up to the heart. The death rate for the test was only 1 in 100, I was assured.
Learning about the risks of the experiment as well as the risk associated with my raised blood cholesterol level scared the life out of me. Although I was excluded from participating in the study, the experience may well have saved my life.
For the first time, I began to realize the seriousness of high blood cholesterol. It was a heart attack just waiting to happen. But equally important, I got a taste of what it is like to be a patient, to have tests done on me and to think of myself as sick. This was hard to take.
This experience taught me two lifesaving lessons. First, although I felt fit and strong, I was actually at high risk for heart disease because of my high blood cholesterol level. And with my family history, it could not be ignored. Second, I could lower my blood cholesterol level simply by changing what I ate.
36.The writer had heart disease because
A.he was hurt when he was young.
B.his father had heart disease.
C.he didn't know how to take care of himself.
D.he suffered another serious disease.
正确答案：B
解析：问题问的是：作者为什么患有心脏疾病？根据第一段I come from a family with a history of the heart disease. 可知作者的心脏病是遗传的,所以选B.。
37.Which of the following statements is NOT true
A.The write had never measured his blood cholesterol before thirty-one.
B.The writer was told by the doctor that he was at high risk of heart disease.
C.The writer had a family history of heart disease.
D.The writer was at risk of heart disease just because of his family history.
正确答案：D
解析：问题问的是：以下说法哪个是不正确的？A说作者在31岁之前没有测量过血液中的胆固醇含量,根据第二段的第一句可知该选项是正确的。B说医生说作者患心脏疾病的风险很高,根据第二段的第二句可知该选项是正确的。C说作者的心脏疾病有家族史,第一段已经说明了这个事实,所以是正确的。D说作者患心脏病的风险很高仅仅是因为家族史,这个判断是错误的,因为第二段的第二句提到作者的血液中胆固醇含量高和家族史会导致其患上心脏疾病。
38.What did the doctor ask the wrier to do
A.To go to the National Institutes of Health to participate in clinical trial.
B.To put a tube through a leg artery up to the heart.
C.To go to bed on time every day.
D.To eat less and do exercises every day.
正确答案：A
解析：问题问的是：医生让作者去做什么？根据第二段He sent me to the National Institutes of Health（NIH)to be screened for participation in a clinical trial. 可知A是答案。
39.What did the writer know from his experience
A.He should never participate in such a fatal clinical trial.
B.He was at high risk of heart disease although he was fit and strong.
C.He was doomed to have heart disease because of his family history.
D.Nothing could help him out the trouble except for participating in the trial.
正确答案：B
解析：问题问的是医.学全.在.线www.med126.com：作者从他的经历中了解了什么？文章的最后一段提到作者从他的经历中得到了两个能挽救其生命的信息,其一是虽然自己觉得强壮,但是仍然有患心脏病的风险,因为他血液中胆固醇含量过高并且有家族史；其二就是他可以通过改变饮食结构来降低胆固醇的含量,所以B是正确的答案。
40.How could the writer lower his blood cholesterol level
A.By eating less .
B.By realizing the risk of heart disease.
C.By putting a tube through a leg artery up to the heart.
D.By changing diet.
正确答案：D
解析：问题问的是：作者怎样降低血液中的胆固醇含量？文章的最后一句已经提到可以通过改变饮食结构来解决这个问题,所以答案是D.
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