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【多选题】
下列关于动脉血氧分压的描述正确的是()
A.
正常值为80~100mmHg
B.
用于衡量有无缺氧及缺氧的程度
C.
是作为诊断呼吸衰竭的重要指标
D.
40~60mmHg提示重度缺氧
E.
与组织供氧有直接关系,是诊断酸碱失衡的间接指标
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举一反三
【单选题】国内的专利可以通过下列哪个数据库检索到?
A.
维普中文科技期刊数据库
B.
Apabi数字资源平台
C.
万方数据知识服务平台
D.
超星数字图书馆
【单选题】( )主要用来信息传播。
A.
订阅号
B.
服务号
C.
企业号
【单选题】国内的专利可以通过下列哪个数据库检索到?
A.
维普数据库
B.
万方数据知识服务平台
C.
超星数字图书馆
D.
Apabi数字资源平台
【多选题】国内的专利可以通过下列哪个数据库检索到?
A.
超星数字图书馆
B.
万方数据知识服务平台
C.
CNKI中国知网
D.
国家专利网
【单选题】被蒙古语成“乌兰伊得”的是( )
A.
面食
B.
奶食
C.
茶食
D.
肉食
【单选题】Language Varieties Languages constantly undergo changes, resulting in the development of different varieties of the languages.
A.
Dialects A dialect is a variety of a language spoken by an identifiable subgroup of people. Traditionally, linguists have applied the term dialect to geographically distinct language varieties, but in current usage the term can include speech varieties characteristic of other socially definable groups. Determining whether two speech varieties are dialects of the same language, or whether they have changed enough to be considered distinct languages, has often proved a difficult and controversial decision. Linguists usually cite mutual intelligibility as the major criterion in this decision. If two speech varieties are not mutually intelligible, then the speech varieties are different languages if they are mutually intelligible but differ systematically from one another, then they are dialects of the same language. There are problems with this definition, however, because many levels of mutual intelligibility exist, and linguists must decide at what level speech varieties should no longer be considered mutually intelligible. This is difficult to establish in practice. Intelligibility(可理解性) has a large psychological component: If a speaker of one speech variety wants to understand a speaker of another speech variety, understanding is more likely than if this were not the case. In addition, chains of speech varieties exist in which adjacent speech varieties are mutually intelligible, but speech varieties farther apart in the chain are not. Furthermore, sociopolitical factors almost inevitably intervene in the process of distinguishing between dialects and languages. Such factors, for example, led to the traditional characterization of Chinese as a single language with a number of mutually unintelligible dialects. Dialects develop primarily as a result of limited communication between different parts of a community that share one language. Under such circumstances, changes that take place in the language of one part of the community do not spread elsewhere. As a result, the speech varieties become more distinct from one another. If contact continues to be limited for a long enough period, sufficient changes will accumulate to make the speech varieties mutually unintelligible. When this occurs, and especially if it is accompanied by the sociopolitical separation of a group of speakers from the larger community, it usually leads to the recognition of separate languages. The different changes that took place in spoken Latin in different parts of the Roman Empire, for example, ually gave rise to the distinct modem Romance languages, including French, Spanish, Portuguese, Italian, and Romanian. In ordinary usage, the term dialect can also signify a variety of a language that is distinct from what is considered the standard form. of that language. Linguists, however, consider the standard language to be simply one dialect of a language. For example, the dialect of French spoken in Paris became the standard language of France not because of any linguistic features of this dialect but because Paris was the political and cultural centre of the country.
B.
Social Varieties of Language Sociolects(社会方言) are dialects determined by social factors rather than by geography. Socioleets often develop due to social divisions within a society, such as those of socioeconomic class and religion. In New York City, for example, the probability that someone will pronounce the letter when it occurs at the end of a syllable, as in the word fourth, varies with socioeconomic class. The pronunciation of a final in general is associated with members of higher socioeconomic classes. The same is true in England of the pronunciation of h, as in hat. Members of certain social groups often adopt a particular pronunciation as a way of distinguishin A.Y B.N C.NG
【单选题】国内的专利可以通过下列哪个数据库检索到?
A.
CNKI中国知网期刊数据库
B.
Apabi数字资源平台
C.
万方数据知识服务平台
D.
超星数字图书馆
【单选题】English is a language shared by several diverse cultures ,each of  _______________uses it somewhat differently
A.
which
B.
what
C.
them
D.
those,
【判断题】A natural language is a mixed language which has become the mother tongue of a speech community. ()
A.
正确
B.
错误
【简答题】请你解释下面的现象. 1.在桌子上放一个茶杯(口朝上),翻第1次杯口朝(    ),翻第2次杯口朝(    )……翻第99次杯口朝(    ) ……翻第2008次杯口朝(    )。 2.下图有5个茶杯都口朝下扣在茶盘中,乐乐每次翻动2个茶杯。按这样翻下去,她能把5个茶杯都翻成口朝上吗?为什么?
相关题目:
【单选题】Language Varieties Languages constantly undergo changes, resulting in the development of different varieties of the languages.
A.
Dialects A dialect is a variety of a language spoken by an identifiable subgroup of people. Traditionally, linguists have applied the term dialect to geographically distinct language varieties, but in current usage the term can include speech varieties characteristic of other socially definable groups. Determining whether two speech varieties are dialects of the same language, or whether they have changed enough to be considered distinct languages, has often proved a difficult and controversial decision. Linguists usually cite mutual intelligibility as the major criterion in this decision. If two speech varieties are not mutually intelligible, then the speech varieties are different languages if they are mutually intelligible but differ systematically from one another, then they are dialects of the same language. There are problems with this definition, however, because many levels of mutual intelligibility exist, and linguists must decide at what level speech varieties should no longer be considered mutually intelligible. This is difficult to establish in practice. Intelligibility(可理解性) has a large psychological component: If a speaker of one speech variety wants to understand a speaker of another speech variety, understanding is more likely than if this were not the case. In addition, chains of speech varieties exist in which adjacent speech varieties are mutually intelligible, but speech varieties farther apart in the chain are not. Furthermore, sociopolitical factors almost inevitably intervene in the process of distinguishing between dialects and languages. Such factors, for example, led to the traditional characterization of Chinese as a single language with a number of mutually unintelligible dialects. Dialects develop primarily as a result of limited communication between different parts of a community that share one language. Under such circumstances, changes that take place in the language of one part of the community do not spread elsewhere. As a result, the speech varieties become more distinct from one another. If contact continues to be limited for a long enough period, sufficient changes will accumulate to make the speech varieties mutually unintelligible. When this occurs, and especially if it is accompanied by the sociopolitical separation of a group of speakers from the larger community, it usually leads to the recognition of separate languages. The different changes that took place in spoken Latin in different parts of the Roman Empire, for example, ually gave rise to the distinct modem Romance languages, including French, Spanish, Portuguese, Italian, and Romanian. In ordinary usage, the term dialect can also signify a variety of a language that is distinct from what is considered the standard form. of that language. Linguists, however, consider the standard language to be simply one dialect of a language. For example, the dialect of French spoken in Paris became the standard language of France not because of any linguistic features of this dialect but because Paris was the political and cultural centre of the country.
B.
Social Varieties of Language Sociolects(社会方言) are dialects determined by social factors rather than by geography. Socioleets often develop due to social divisions within a society, such as those of socioeconomic class and religion. In New York City, for example, the probability that someone will pronounce the letter when it occurs at the end of a syllable, as in the word fourth, varies with socioeconomic class. The pronunciation of a final in general is associated with members of higher socioeconomic classes. The same is true in England of the pronunciation of h, as in hat. Members of certain social groups often adopt a particular pronunciation as a way of distinguishin A.Y B.N C.NG