Research findings have shown that language processing centers are situated in a single area of the left hemisphere.
正确答案： 错误
本题解析：
经过多次的研究发现， 语言处理中枢并不是只存在于大脑左半球的某一个单个的区域， 相反，看起来有很多个语言中枢， 且每个中枢都有其自己独特的功能。 改正：Research findings have shown that language processing centers are not situated in a single area of the left hemisphere. Rather, there seem to be a number of language processing centers, each with its own specialized function.
Empirical studies show that the process of SLA is a process of constructing and modifying rules of communication.
From the sociolinguistic perspective, a speech variety is no more than a dialectal variety of a language.
The division of English into Old English, Middle English, and Modern English is nonconventional and not arbitrary.
Searle's classification of illocutionary acts is based on the classification of performative verbs.
According to the "principles-and-parameters" theory, "principles" refer to highly abstract properties of grammar which are applied to language in general and which generate phrases and at the same time restrain the power of Move a, while "parameters" allow general principles to operate in certain restricted ways, according to which particular grammars of natural languages vary.
Well-arranged sentences are considered grammatical sentences that are formed following a set of syntactic rules.