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问题 单项选择题

下列关于心脏标志物应用原则的说法不正确的是（）

A.不再将LD、AST、HBDH用于心肌损伤的诊断，急性冠脉综合征患者不考虑继续使用CK-MB活性测定法

B.临床检验中应同时检测cTn和CK-MB质量，提高诊断的准确性

C.心肌肌钙蛋白（cTn）取代CK-MB成为检测心肌损伤的首选指标

D.对发病6小时后就诊的患者，不必测Mb，只需测定cTn

E.如果患者已有典型的、可确诊急性心肌梗死的ECG改变，应立即进行治疗

答案

参考答案：B

解析：如果提供一项心脏肌钙蛋白测定，建议不必同时进行CK-MB质量测定。

单项选择题 A3/A4型题

女，48岁，因 * * 流血15天就诊，已放置避孕环15年，考虑为更年期功能失调性子宫出血。

最恰当处理方式是()

A．取环加药物性刮宫

B．取环，给予雌激素止血

C．取环，给予雌、孕激素止血

D．取环，给予雄、孕激素止血

E．取环加诊断性刮宫
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填空题

The central problem of economics is to satisfy the people’s and nation’s wants. The problem we are faced with is that our (1) , here identified as money, are (2) . The only way we can resolve our (3) is to make choices. After looking at our resources, we must examine our list of (4) and identify the things we need (5) , those we can postpone, and (6) we cannot afford. As individuals, we face the central problem involved in economics — deciding just how to allocate our limited resources to provide ourselves with the greatest (7) of our wants.
Nations face the same problem. As a country’s population (8) , the need for more goods and services grows (9) . Resources necessary to production may increase, but there are (10) enough resources to satisfy the total desires of a (11) . Whether the budget meeting is taking place in the family living-room, in the conference room of the corporation (12) of directors, or in the chamber of the House of Representatives in Washington, the basic problem still exists. We need to find (13) of allocating limited resources in order to satisfy unlimited wants.
A short time ago, economists divided goods into two categories, free and economic. The former, like air and water, were in (14) abundance that economists had no concern about (15) of scarcity and what to do about it. Today many of these "free goods" are in (16) very expensive to use. Pollution has made clean air and water expensive for producers who have to filter their waste products, for consumers who ultimately pay for the producers’ extra costs, and (17) tax-payers who pay for the government’s involvement in cleaning the environment.
In the 1990s, almost all goods are (18) . Only by effort and money can they be (19) in the form people wish.
Meeting the needs of people and the demands from resources available leads to the basic activity of production. In trying to (20) unlimited wants from limited economic goods, production leads to new problems in economics.
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