题目内容:
根据以下听力资料,回答题。Whatwasthemaincauseoftheseverecasualties?
A.Thetornadocameaheadoftim B.Therewasnowarningbeforehan
C.Thepredictionwasnotaccurat
D.Thepreventionswerenoteffectiv
参考答案:
答案解析: