一名39岁妇女，绝经13个月，无其他器质性病变，可能的诊断是（）

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问题单项选择题 A2型题

A.早绝经

B.围绝经期

C.绝经过渡期

D.绝经前期

E.绝经后期

答案

参考答案：A

解析：临床上常以40岁或以后自然绝经归为生理性，40岁以前月经终止归为过早绝经或卵巢早衰，并视为病理性。

单项选择题

免疫接种包括两种方法：①注射抗体，②注射抗原，下列相关说法正确的是（）

A.用治愈者的血清进行的治疗属于方法②

B.方法①在接种对象体内引起B细胞的增殖、分化

C.方法②是通过使人体患病然后获得免疫力

D.医学上一般采用方法②预防一些传染病

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填空题

Insurance is the sharing of (1) . Nearly everyone is exposed (2) risk of some sort. The house owner, for example, knows that his (3) can be damaged by fire; the ship owner knows that his vessel may be lost at sea; the breadwinner knows that he may die by (4) and (5) his family in poverty. On the other hand, not every house is damaged by fire or every vessel lost at sea. If these persons each put a (6) stun of money into a pool, there will be enough to (7) the needs of the few who do suffer (8) . In other words the losses of the few are met from the contributions of the (9) . This is the basis of (10) . Those who pay the contributions are known as (11) and those who administer the pool of the contributions as insurer.
The (12) for an insurance naturally depends on how the risk is to happen as suggested (13) past experience. If the companies fix their premiums too (14) , there will be more competition in their branch of insurance and they may lose (15) . On the other hand, if they make the premiums too low, they will not have (16) and may even have to drop out (17) business. So the ordinary forces of supply and (18) keep premiums at a proper (19) to both insurers and those who (20) insurance.

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