题目内容:
Thelastparagraphtellsus,amongotherthings,that
A.thelidardetectorneedsimprovemen B.manyairlinesareinterestedinthesyste
C.passengersoftenforgettofastentheirseatbelt
D.thelidardetectorcanbeusedinawiderangeofarea
参考答案:
答案解析: