The fact that different languages have different words for the same object is good proof that human language is （）.

单项选择题In terms of the place of articulation, the following sounds [t][d][s][z][n] share the feature of （）.

A.palatal
B.alveolar
C.bilabial
D.dental

单项选择题What the element ‘-es’ indicates is third person singular, present tense, the element ‘-ed’ past tense, and ‘-ing’ progressive aspect. Since they are the smallest unit of language and meaningful, they are also（）.

A.phonemes
B.morphemes
C.allophones
D.phones

单项选择题Of the three branches of phonetics, the longest established, and until recently the most highly developed, is（）phonetics.

A.auditory
B.acoustic
C.articulatory
D.none of the above three

单项选择题In English, “pill” and “bill” are （）.

A.a phonemic contrast
B.complementary distribution
C.assimilation
D.a minimal pair

单项选择题As modern linguistics aims to describe and analyze the language people actually use, and not to lay down rules for correct linguistic behavior,it is said to be （）.

A.prescriptive
B.sociolinguistic
C.descriptive
D.psycholinguistic