問題詳情

10. It is difficult to breathe on a mountain because there is____________oxygen in the air.
(A) incurable
(B) insufficient
(C) insignificant
(D) inseparable

參考答案

答案：B
難度：簡單0.767
書單：沒有書單，新增

用户評論

【用戶】odelia

【年級】國一上

【評論內容】It is difficult to breathe on a mountain because there is____________ oxygen in the air.在山上很難呼吸，因為空氣中有____________氧氣。

【用戶】odelia

【年級】國一上

【評論內容】It is difficult to breathe on a mountain because there is____________ oxygen in the air.在山上很難呼吸，因為空氣中有____________氧氣。