Classroomlanguagecanalsobecalledin-classlanguage,whichisthespeciallyusedlanguagesystembybothteachersandstudentsinclassroomteaching.Whichofthefollowingisnotconsistedinit?
A.Spoken language.
B.Body language.
C.Spelling language.
D.Written language.
正确答案是C