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2. English antonyms are traditionally described as words opposite in meaning and spelling. ( )

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1. The words “negro”, “nigger” and “black” are relative synonyms. They differ in their emotive meaning. ( )

I. Complete the following statement or passage with proper expressions. （1×10=10）1．Language is a system of based on physiology, psychology and physics.2. The character of native words in English is polysemy, collocability and ability. 3. The character of the classical elements in the English vocabulary is of the character. 4. It is evident that a is a unity of sound and meaning. It is also a fundamental structural unit of a sentence.5. The words “shirt” and “skirt” are the examples of the elements in the English Vocabulary.6. “Action”, “able”, “fame” are the words borrowed from language.7.The Latin element together with the Greek element are called the elements in the English vocabulary.8. is a major branch of linguistics devoted to the study of meaning.9. “Bread” and “dough” meaning money in the American English are the typical examples of .They are popularly used in daily life.10. There are countless paired synonyms where a native word is opposed to one borrowed from Latin, Greek of French. These words are called .

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A. major branch of linguistics devoted to the study of meaning.

已知随机变量X和Y的联合分布律如下表所示： XY 12310.20.20.120.30.10.1完成下表E（Y|X）E(Y|X=1)= E(Y|X=2)= E(Y|X=3)= p