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问题 单项选择题

老年人用卡那霉素应谨慎，因为

A．老年人肝血流量减少，肝功能下降，从而使血药浓度下降
B．老年人血浆蛋白含量降低
C．老年人体内水分减少、药物分布容积降低
D．老年人肾功能降低，药物半衰期延长、耳肾毒性增加
E．老年人易产生毒性反应

答案

参考答案：D

解析： 卡那霉素主要经肾排泄，具有肾毒性，而老年人肾的代谢能力下降，因此用卡那霉素应谨慎。

单项选择题

When a disease of epidemic proportions threatens the public, scientists immediately get to work, trying to locate the source of affliction and find ways to combat. Vaccination is one of the effective ways to protect the (1) population of a region or country which may be (2) grave risk. The process of vaccination allows the patient’s body to (3) immunity to the virus or disease so that, if it is encountered, one can fight it (4) naturally. To accomplish this, a small weak or dead (5) of the disease is actually injected into the patient in a controlled environment, (6) his body’s immune system can learn to fight the invader (7) . Information (8) how to penetrate the disease’s defenses is (9) to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that (10) the patient later come into contact with the real problem, his body is well equipped and trained to (11) with it, having already done so before.

There are, however, dangers (12) in the process. (13) , even the weakened version of the disease contained in the vaccine proves (14) much for the body to handle, resulting in the immune system (15) , and, therefore, the patient’s death. Such is the case of the smallpox vaccine, (16) to eradicate the smallpox epidemic that nearly (17) the whole Native American population and killed massive numbers of settlers. (18) 1 in 10,000 people who receive the vaccine (19) the smallpox disease from the vaccine itself and dies from it. Consequently, the process, which is truly a (20) , may indeed hide some hidden curses.

1（）

A.entire

B.total

C.complete

D.complex
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单项选择题

交换社因名称、地址、交换场次等变更，需向省中心或当地人民银行提出票据交换业务变更申请，需提交的材料不包括以下（）。

A.申请文件

B.变更后的《金融许可证》和《营业执照（副本）》复印件

C.《变更票据交换业务申请表》

D.《票据挂失止付通知书》
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