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问题 单项选择题

患者，男，40岁。确诊高血压病3年，无自觉症状。检查：血压160/95mmHg（21.3/12.6kPA），尿常规无异常，心电图及X线显示左心室肥大。应首先考虑的是

A．高血压病一期

B．高血压病二期

C．高血压病三期

D．急进型高血压

E．高血压脑病

答案

参考答案：B

解析：根据高血压病3年，无自觉症状，可以除外D、E二项。按我国高血压分期标准，一期无心、脑、肾并发症；二期有轻度心、脑、肾损害之一者；三期有严重心、脑、肾损害之一者。医学教育网整理该患者已有左心室肥大应考虑是高血压二期。故标准答案为B.

单项选择题 案例分析题

The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.

What are nitrates used for?（）

A.They preserve flavor in packaged foods.

B.They preserve the color of meats.

C.They are the objects of research.

D.They cause the animals to become fatter.
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单项选择题

国标《复合塑料编织袋》规定，做（）试验时，要检查袋破裂和包装物漏失情况。

A.剥离力

B.耐热性

C.耐跌落性

D.拉伸负荷
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