患者女性，17岁，因“视物模糊、多尿2年”就诊。查体：神清语利、精神可，瞳孔：左侧3mm、右侧3mm，对光反射（+），双眼视力分别为0.3、0.5，鼻唇沟不浅，示齿对称，伸舌居中，四肢肌力5级，肌张力无明显增高和减低，双侧巴宾斯基征（-）。

在门诊最需要完善的查体项目是（）

A.视野检查

B.浅感觉

C.腱反射

D.角膜反射

E.共济检查

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.