题目内容:
听音频,回答下列问题
A.Airplane designers expand the space of the first-class seats. B.A “spacious lounge”with fully equipped bar is installed in the first—class sections of the planes.
C.The air-conditioning system in the first—class section is better than that of the coach.
D.Some humidifiers are installed in the first—class cabins.
参考答案:
答案解析: