A.舌背黏膜层、舌肌、舌腹黏膜下层、舌腹黏膜层
B.舌背黏膜层、舌腹黏膜下层、舌腹黏膜层、舌肌
C.舌背黏膜层、舌腹黏膜下层、舌肌、舌腹黏膜层
D.舌腹黏膜层、舌腹黏膜下层、舌背黏膜层、舌肌
E.舌腹黏膜层、舌腹黏膜下层、舌肌、舌背黏膜层