[单选题] _______, vowels tend to be nasalized before nasal consonants because it is difficult to time the lowering of the velum to produce nasality with the consonant articulation.

1、[判断题]The syntactic category of the specifier differs depending on the category of the head. If the heads are Ns, the specifiers are determiners. If the heads are Vs, the specifiers are qualifiers and if the head are As or Ps, then the specifiers are degree words.

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2、[判断题]We can add –un to adjectives to form new adjective words. This un-Rule is not as productive for adjectives composed of just one morpheme as for those that are themselves derived for verbs, such as unacceptable and undecided.

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3、[判断题]Grice specified two kinds of implied meaning or implicature: conventional implicature and non-conventional implicature. Conventional implicature is inferred by the hearer with reference to the context of communication. For example, he is rich but he is not greedy.

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4、[名词解释]Register

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5、[名词解释]displacement

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