[单选题]Individual sounds are the basic units of pronunciation, and are often referred to as _______. ()zrt答案窝(daanwo.com)-大学生作业答案及考资分享平台 Aphoneszrt答案窝(daanwo.com)-大学生作业答案及考资分享平台 Ballophoneszrt答案窝(daanwo.com)-大学生作业答案及考资分享平台 Cmorphemezrt答案窝(daanwo.com)-大学生作业答案及考资分享平台 Dphoneme