阿摩線上測驗
12. The most important reason why children should learn to swim is that drowning is still one of the most common
causes of accidental death, so being able to swim is an _____ life-saving skill.
(A) essential
(B) agreeable
(C) endangered
(D) incidental
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統計： A(490), B(22), C(37), D(15), E(0) #1995330
統計： A(490), B(22), C(37), D(15), E(0) #1995330
