简答题The organs that take part in production of speech sounds are called __________. A、speech production B、speech contest C、nasal cavity D、speech organs简答题The sounds produced with the help of the upper teeth are called __________ sounds. A、bilabial B、 labio-dental C、dental D、post-alveolar简答题/p/ and /b/ can appear in initial position (as in pin and bin) and also in final position (as in rope and robe)．They are in phonemic contrast and said to form a _______________ because they occur in the same environment and distinguish meaning. A、complementary distribution B、allophonic distribution C、minimal pair D、segmental phoneme简答题In English, [l] and [ɫ] are allophones of the phoneme /l/ because they occur in ___________________, i.e., they never appear in the same sound contexts. [l] always occurs before vowels (as in the word leaf, look), while [ɫ] comes after vowels and before consonants (as in the word feel, cold). A、free variation B、 a minimal set C、complementary distribution D、regional differences简答题The positional variants of the same phoneme are known as __________. A、sounds B、vowels C、 consonants D、allophones简答题/p/, /b/, /m/ and /w/ are produced with the help of __________. A、the upper teeth and inner lower lip B、the upper and lower lip C、the tongue tip on or close to the alveolar ridge D、the tip of the tongue raised close to the hard palate简答题The back of the tongue helps to produce __________ sounds. A、velar B、dental C、 alveolar D、 palatal简答题The soft palate is also called __________. A、uvula B、epiglottis C、trachea D、velum简答题The study of speech organs is important to know the nature of __________. A、speech production B、speech contest C、telegraphic speech D、public speech简答题Using the diacritics provided by the IPA, _____________ transcription captures as many aspects of a specific pronunciation as possible and makes very subtle distinctions between sounds. A、broad B、narrow C、phonetic D、 conventional