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单项选择题

设a = 8，则表达式 a>>>2的值是（   ） A.
1 B.
2 C.
3 D.
4

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未知题型
54岁已婚妇女，白带多伴外阴痒3周。查外阴皮肤有抓痕，检查见阴道穹窿处有稀薄泡沫状分泌物，阴道黏膜有多处散在红色斑点。根据上述临床表现，初步诊断为A、念珠菌阴道炎
B、滴虫阴道炎
C、细菌性阴道病
D、老年性阴道炎
E、慢性宫颈炎
根据初步诊断，应选择的治疗措施是A、咪康唑栓剂放阴道内，连用7日
B、甲硝唑0.4g口服每日2次，连用5日
C、甲硝唑片放阴道内，连用7～10日
D、克林霉素0.3g每日2次口服，连用7日
E、尼尔雌醇2mg每半月口服一次，连用4次
多项选择题
常见的记忆术有哪些_________。
A、联想法
B、串联法(环扣法)
C、定位法
D、线索法
未知题型
There is evidence that the usual variety of high blood pressure is, in part, a familial diseasE.Since families have similar genes as well as similar environments, familial diseases could be due to shared genetic influences, to shared environmental factors, or to both. For some years, the role of one environment factor commonly shared by families, namely dietary salt (i.E., sodium chloride), has been studied at Brookhaven National Laboratory. These studies suggest that long excess salt intake can lead to high blood pressure in man and animals. Some individuals, however, and some rats consume large amounts of salt without developing high blood pressurE.No matter how strictly all environmental factors were controlled in these experiments, some salt-fed animals never developed hypertension whereas a few rapidly developed very severe hypertension followed by early death. These marked variations were interpreted to result from differences in genetic constitution.
By mating long successive generations of those animals that failed to develop hypertension from salt intake, a resistant strain (the " R" strain) has been evolved in which consumption of large quantities of salt fails to influence the blood pressure significantly. In contrast, by mating only animals that quickly develop hypertension from salt, sensitive strain (the "S" strain) has also been developeD.
The availability of these two strains permits investigations possiblE.They provide a plausible laboratory model on which to investigate some clinical aspects of the human hypertension. More important, there might be the possibility of developing methods by which genetic susceptibility (敏感性) of human beings to high blood pressure can be defined without waiting for its appearancE.Radioactive sodium 22 was an important "tool" in working out the characteristics of the sodium chloride metabolism.
The study of the effects of salt on high blood pressure was carried out_______.
A.as members of the same family tend to use similar amounts of salt
B.to explore the long-term use of a sodium based substance
C.because it was proven that salt caused high blood pressure
D.because of the availability of chemically pure salt and its derivatives
The main difference between 'S' and 'R' rats is their_______.A.need for sodium
B.rate of mating
C.type of blood
We can infer from the article that sodium 22 can be used to_______.A.control high blood pressure
B.cure high blood pressure caused by salt
C.tell the 'S' rats from the 'R' rats
D.determine what a sodium chloride metabolism is like
The most beneficial results of the research might be_______.A.development of diets free of salt
B.an early cure for high blood pressure
C.control of genetic agents that cause high blood pressure
D.the early identification of potential high blood pressure victims
Which of the statements best relates the main idea of this article?A.When salt is added rats and human beings react similarly.
B.The near future will see a cure for high blood pressurE.
C.The medical field is desperately in need of research.
D.A tendency toward high blood pressure may be a hereditary factor.
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