举一反三
- 中国大学MOOC: Pure vowels can be classified into three categories: front vowels, central vowels and back vowels. The two vowels/ɜː/ and /ə/ are classified into ______ vowels because they are made with the middle part of the tongue being raised.
- 中国大学MOOC: How can you distinguish between front vowels, central vowels, and back vowels?
- Which of the following criteria can NOT be used to classify vowels A: The part of the tongue that is held highest B: The openness of the mouth C: The vibration of the vocal cords D: The shape of the lips
- 中国大学MOOC: Both ‘clear’ [l] and ‘dark’ [ɫ] are formed with the tip of the tongue touching the teeth ridge. The only difference is that in the articulation of the ‘clear’ [l], the back part of the tongue is raised towards the hard palate. In the articulation of the ‘dark’ [ɫ], the front part of the tongue is raised towards the soft palate and slightly velarised, with a concave upper surface.
- Which of the following vowels is the Back Vowel? A: /ɜː/ B: /i:/ C: /e/ D: /ʊ/
内容
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中国大学MOOC: Velar sounds are made with the back of the tongue raised to touch the velum.
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Which of the following is NOT correct according to the second video clip in this part?
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3) English vowels can be classified in terms of the following EXCEPT_______. A: tongue position B: openness of the mouth C: place of articulation D: shape of the lips
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(multiple choices)Which of the following statements about our nervous system are correct? A: Our nervous system includes the central nervous system and the peripheral nervous system. B: The central nervous system only contains our brain. C: The somatic nervous system is part of the peripheral system. D: The autonomic nervous system can be divided into the sympathetic and the parasympathetic system.
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Classification of vowels is made up of the following EXCEPT（ ） A: the position of the tongue B: the openness of the mouth C: the shape of the lip D: the width of the vowels