What does the underlined sentence in the last paragraph mean？
A. People are aware of what kind of languages they are using while speaking.
B. People can distinguish the types of languages well than experts.
C. Experts are not the only that can distinguish between these types.
D. Most speakers are unaware of what type of speech they are using.
1940年，投降日本，建立伪“中华民国国民政府”的是
A. 汪精
B. 段祺瑞
C. 胡汉民
D. 石友三
Which of the following cultural conditions is NOT necessary for the creation of a large body of slang expressions？
A. The introduction and acceptance of new objects and situations in the society.
B. A diverse population with a large number of subgroups.
C. Association among the subgroups and the majority population.
D. A large body of people.
1919年3月，在列宁的领导下诞生了
A. 第一国际
B. 第二国际
C. 共产国际
D. 无产阶级
微信支付 
支付宝支付