[单项选择]Standard dialect is （　）.
A. designated as the official or national language of a country
B. a dialect a child acquired naturally like his regional dialect
C. used by people who speak different languages for restricted purpose
D. used by people who belong to the higher social stares

[单项选择]
Irish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.
The Shannon Dolphin and Wildlife Foundation (SDWF) has been studying a group of up to 120 bottle-nose dolphins in the River Shannon using vocalizations collected on a computer in a cow shed near the River Shannon.
As part of a research project, student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated them into six fundamental whistle types and 32 different categories. Of the categories, he found most were used by both sets of dolphins but eight were only heard from the Irish dolphins.
"We are building up a catalogue of the different whistle types they use and trying to associate them with behavior like foraging, r
A. Right
B. Wrong
C. Not mentioned

[单项选择]The dialect which is influenced by social status is ______.
A. regional dialect
B. idiolect
C. sociolect
D. ethnic dialect

[单项选择]（）there are several thousand languages and dialects spoken in the world.
A. When it is estimated
B. It has been estimated that
C. To estimate that
D. If it is estimated that

[填空题]In ordinary usage, the term dialect can also signify a variety of a language that is distinct from what is considered______.

[单项选择]Why is the case of Ainu, the Japanese dialect, mentioned in the passage
A. As an example of endangered language.
B. To show the diversity of languages in Japan.
C. To testify the effectiveness of multilingual approach.
D. To criticize neglect of minority tongues by Japanese government.

[填空题]A dialect is a variety of a language spoken by a very small number of people.

[单项选择]
The "standard of living" of any country means the average person’s share of the goods and services the country produces. A country’s standard of living, therefore (51) first on its capacity to produce wealth. "Wealth" in this (52) is not money, for we do not live on money but on things that money can buy: "goods" such as food and clothing, and "services" such as transport and entertainment.
A country’s capacity to (53) wealth depends upon many factors, most of (54) have an effect on one another. Wealth depends (55) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have fertile soil and a favorable climate; other regions (56) none of them. Next to natural resources comes the ability to (57) them to use. China is perhaps as rich as the USA in natural resources, but suffer
A. freedom
B. 1iberation
C. prevention
D. government