阿摩線上測驗
18. ______ is a ring made of buoyant material which can be thrown overboard to rescue a person
who has fallen into water. It is specially designed to keep the person afloat until he is recovered
from the water.
(A) Lifeline
(B) Lifejacket
(C) Liferaft
(D) Lifebuoy
答案：登入後查看
統計： A(26), B(62), C(64), D(534), E(0) #1799120
統計： A(26), B(62), C(64), D(534), E(0) #1799120
