当前学科:护理英语II
  • 题目: 选择题
    Which part of the digestive tract works for protecting against acid?

    • A. The muscular tract.
    • B. The mucous.
    • C. The mucous layer.
    • D. The surface of the mucous.

    答案: <查看本题扣1积分>

    查看答案

    答案不对?请尝试站内搜索