20. 翻譯：在一個安全地區提供急救護理。
(A). Provide breathing apparatus at a safe place.
(B). Provide first aid at a safe place.
(C). Provide medical assistances at a safe place.
(D). Provide respirator at a safe place.

答案：登入後查看
統計： A(1), B(8), C(7), D(1), E(0) #1276236