The division of English into Old English, Middle English, and Modern English is nonconventional and not arbitrary.
正确答案： 错误
本题解析：
大家都能接受英语被划分为古英语、中世纪英语和现代英语 3个历史阶段的划分方法，这种划分是随意的、约定俗成的，历史语言学家们之所以把语言划分为不同的历史时期，是因为他们想有一个更方便的、更切合实际的研究语言变化的方法。这绝不意味着古英语是在某一特定的时间阶段转化成中世纪英语的。改正：The division of English into Old English, Middle English, and Modern English is conventional and somewhat arbitrary.
Empirical studies show that the process of SLA is a process of constructing and modifying rules of communication.
Research findings have shown that language processing centers are situated in a single area of the left hemisphere.
From the sociolinguistic perspective, a speech variety is no more than a dialectal variety of a language.
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.