ACCorDing to thE pAssAgE, somE tornADoEs tAkE pEoplE unAwArE BECAusE thEy
A、proDuCE A sounD similAr to thunDEr.
B．CAnnot BE sEEn until it is too lAtE.
C．look so muCh likE othEr ClouDs.
D．CArry so mAny lArgE piECEs oF DEBris.