问题 单项选择题

有关高血压病的并发症,下列哪项不正确()

A.心、脑、肾等器官是主要受累脏器

B.眼底病变与高血压的严重程度直接有关

C.恶性高血压以脑并发症最为突出

D.脑卒中的发病率比心肌梗死高5倍左右

E.高血压脑病症状出现可能与脑水肿有关

答案

参考答案:C

解析:

有关高血压病的脏器受累最主要为心、脑、肾;其中脑血管的并发症(脑卒中)的发病率可为心肌梗死的5倍左右;眼底的改变可反映高血压的严重程度;高血压脑病的发生机制可能为过高的血压突破脑血管自身的调节机制,使脑灌注过多,液体经血脑屏障漏出到血管周同脑组织导致脑水肿。关于恶性高血压的发病机制尚不清楚,但主要的脏器病理损害以肾最为突出。

判断题
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.

11()

A.handle

B.familiarize

C.deal

D.tackle