6. The illocutionary point of ______ has the characteristic that the successful performance of an act of this kind brings about the correspondence between what is said and reality. (　　　)

A. directives                                                   B. declarations

C. commissives                                              D. representatives

7. Old English had a rich case-ending system, e.g., Old English noun had four cases, i.e., nominative, genetive, dative and ______. (　　　)

A. possessive                                                 B. vocative

C. accusative                                                 D. locative

8. ______ dialects are characteristic of a particular type of linguistic activity and appropriate for use in particular speech situations. (　　　)

A. Social                                                        B. Ethnic

C. Regional                                                    D. Situational

9. Lying under the skull, the human brain contains an average of ten billion nerve cells called ______.(　　　)

A. nerve fibers                                               B. nerves

C. neurons                                                     D. cerebral cortex

10. By the time children are going beyond the ______ stage, they begin to incorporate some of the inflectional morphemes. (　　　)

A. telegraphic                                                 B. multiword

C. two-word                                                  D. one-word