简答题English diphthongs are divided into both falling diphthongs (the first vowel sound is pronounced longer, louder and stronger than the second one), and rising diphthongs (the second sound is produced longer and stronger than the first). A、正确 B、错误简答题The description of English monophthongs relates to tongue __________, tongue position, lip posture and length. A、height B、mid-level C、 lowness D、 variety简答题The duration of a diphthong is similar to that of a __________ vowel. A、 short B、 lax C、long D、high简答题In the production of a consonant sound, the air stream from the lungs meets no obstruction of any kind in the throat, the nose, or the mouth, while in the pronunciation of a vowel, the air stream from the lungs is obstructed in one way or another. A、正确 B、错误简答题/ə/ is the most frequently occurring vowel sound in English. It is also known as schwa (/ʃwɑ:/. This is a reduced vowel in many unstressed syllables, especially if syllabic consonants are not used A、正确 B、错误简答题/i:/ and /ɪ/ are both high front vowels, but /i:/ is a bit lower and more forward than /ɪ/. In addition, /i:/ is tense in that the root of the tongue is more advanced than with /ɪ/, which is lax A、正确 B、错误简答题Daniel Jones worked out a set of Cardinal Vowels that students learning phonetics could be taught to produce, the aim of which is to give an approximate picture of the degree and direction of the tongue movement involved A、正确 B、错误简答题Like all languages in the world, English phonemes are also divided into vowels and consonants. The distinction between the two lies in the obstruction of __________. A、mouth B、airstream C、nose D、vocal cords简答题The vowel __________ can be described as low, front, and unrounded, but the feature “unrounded” is usually omitted because all front vowels in English are unrounded. A、 /æ/ B、 /e/ C、/i:/ D、/ɒ/简答题Syllabically, although a diphthong is a combination of two vowel sounds, and the tongue glides in the production of it, it is perceived as one phoneme, not two. Thus, diphthongs are treated as having one __________ only. A、 stress B、syllable C、vowel D、allophone