试题题干
Fill in each of the following blanks with a word or an expression.
According to the presence or absence of vocal cord vibration ,the English consonants can be classified into two groups :voiced consonants and 
consonants .
参考答案
试题解析
According to the presence or absence of vocal cord vibration ,the English consonants can be classified into two groups :voiced consonants and voiceless consonants . 根据声带振动的有无，英语辅音可以被分成两种：浊辅音和清辅音。