題目如下： Airline passengers are expected to pick up and recheck all of their ____ befor e boarding their connecting flight. (A)suitcase (B)luggage (C)baggages (D)accommodation 答案是(B) 我選擇(A) 解析說需要由意思來區分答案，D不會是答案，C我記得不可數，剩下兩個選項我覺得都可 以，麻煩板上的大神們幫我解答為何不能是A，而答案是B 謝謝～～