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a vowel is defined as a speech sound in which the air from the lungs is__ in any way and is pronounced with vocal cord__.
A consonant is a speech sound where the air from the lungs is either completely blocked, or partially blocked, or where the opening between the speech organs is so narrow that the air escapes with__.【填】
air pressure
B:barometric pressure
C:sound pressure
D:light pressure
标记内嵌套标记时,就可以使用后代选择器对其中的标记进行控制,下列写法正确是( )
选项: A: strong p{color:red;} p strong{color:red;} strong,p{color:red;} p.strong{color:red;}
标记内嵌套标记时,就可以使用后代选择器对其中的标记进行控制,下列写法正确是( ) 选项: A: strong p{color:red;} p strong{color:red;} strong,p{color:red;} p.strong{color:red;}